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How Long Can You Drive With Engine Light On?

Seeing the Check Engine Light illuminate on your dashboard can cause anxiety for any driver. This light indicates a potential problem with your vehicle's transmission system. Do you know how long you can safely continue driving before the issue becomes serious?

Let us help explain the factors that determine when it's time to stop driving with the Check Engine Light on.

Causes of the Engine Light Turning On

The Check Engine Light turning on can have several underlying causes that require different solutions. Here are some of the most common reasons this nervous light may illuminate:

  • Loose Gas Cap - A loose or faulty gas cap allows evaporative emissions to leak out, triggering an emissions system code that turns on the transmission warning light as well. Thankfully, this is one of the simplest fixes - tightening or replacing the gas cap typically resolves the issue.
  • Sensor Failure - Modern vehicles have sensors that monitor transmission temperature, speed, fluid pressure and more. If one of these vital sensors fails or sends incorrect signals, it can activate the transmission light. A diagnostic scan at a shop can identify the faulty sensor that needs replacement.
  • Low Fluid Level - Not having enough transmission fluid can cause overheating, increased friction, and deterioration of transmission components over time. Low fluid indicates a leak or issue with shifting and will trigger the light. Checking the dipstick and topping off or changing the fluid resolves this cause.

Identifying the specific reason the Check Engine Light is illuminated is crucial to understanding if it is safe to continue driving or if immediate repair is required. Consulting the owner's manual or a professional mechanic can help diagnose the issue accurately based on the fault codes stored.

Potential Consequences of Driving with the Check Engine Light On

Here are some key potential consequences of continuing to drive with the Check Engine Light illuminated:

  • Greater Transmission Damage - Driving with an underlying issue can worsen any mechanical problems or wear and tear. Transmission components like clutches, gears, and bearings depend on proper lubrication and operation. Prolonged abnormal functioning often leads to internal damage and eventual failure.
  • Shifting Difficulties - Depending on the specific problem, you may experience delayed, jerky or hard shifting when the light is on. Faulty sensors or low fluid can prevent smooth gear changes, presenting a safety hazard.
  • Increased Repair Costs - The longer you drive with transmission problems, the more likely major repair or replacement will be needed. Minor issues can turn into major faults quickly with continued use, resulting in higher shop bills down the road.
  • Reduced Power Transfer - An unhealthy transmission may slip or fail to efficiently transfer engine power to the wheels. This decreases acceleration and performance. Fuel efficiency can also suffer due to power loss through the drivetrain.
  • Complete Breakdown Risk - If the transmission fully fails, your vehicle could leave you stranded. Continuing to drive once issues appear dramatically increases the chances of a roadside breakdown. This also creates hazardous situations if failure occurs in traffic.
  • Safety Hazards - Slipping gears or inability to accelerate/decelerate smoothly presents risks. Reacting appropriately in traffic or dangerous conditions may be compromised with transmission problems.

Addressing the warning promptly reduces further damage, repair costs, and safety risks. Understanding these potential consequences informs smart decisions to avoid breakdowns or accidents.

How Long Can You Drive with the Check Engine Light On?

There are some key factors that determine how long you can safely drive with the warning light illuminated.

  • The specific cause of the warning light - Minor issues like a loose gas cap may allow brief continued driving without much concern, while serious mechanical problems like low fluid or a worn clutch require pulling over and repairing immediately.
  • The presence and severity of any symptoms while driving - Are you experiencing slipping gears, trouble accelerating or other driveability issues? Severe transmission symptoms mean you should stop driving right away, while mild or no symptoms may mean a short trip to the repair shop is possible.
  • Mileage driven since the initial warning light - The less distance you've traveled with the light on, the less likely you've already caused significant wear or damage through continued operation.
  • External driving conditions at the time - Stop-and-go traffic and extreme weather increase strain on a compromised transmission, so drive with extra care or avoid these conditions altogether.
  • Availability of transmission repair or service - Can you pull over or have the vehicle transported to a shop right away? The sooner you can have it properly diagnosed and repaired, the better.
  • Manufacturer recommendations - Your owner's manual may provide guidance on whether you can drive short distances to the mechanic after seeing the transmission light.

While the specific safe distance depends on your unique situation, the best practice is to stop driving within a few miles or less once you see the Check Engine Light and seek professional diagnosis and service immediately. This minimizes the chances of a roadside breakdown or permanent damage. Be cautious and listen to your vehicle's warning signs.

Transmission Rebuild, Replacement, Repair & Service

The Check Engine Light is not something to ignore - it likely indicates a serious issue that requires prompt attention. Driving any substantial distance with the light illuminated risks damaging your vehicle and compromising your safety.

You should stop driving as soon as safely possible once you see the light come on. Ongoing operation may exacerbate mechanical problems or wear. The longer you drive, the more likely major repairs or replacements become necessary down the road.

For trusted transmission service and peace of mind for the road ahead, choose the specialists at Circle D Transmission.

Contact us today to schedule an appointment or quotation for your vehicle. We service all makes and models.

What Should Your Transmission Temperature Be?

closeup of a car transmission

The transmission of your vehicle has to be in good working order for the automobile to run smoothly. And the temperature of the transmission plays a significant role. Too high and you could face serious issues. 

The average, optimal temperature of your transmission should be somewhere within the range of 175 to 220 degrees. What happens when it rises above? Let’s find out.  

What Causes a Transmission to Overheat? 

There are a few different reasons that may cause your transmission’s temperature to jump above the optimal range, including: 

  • Dirty or old transmission fluid
  • Worn, dry seals 
  • An engine that is overheating
  • Low - or no - transmission fluid
  • Leaking fluid

A solenoid that is malfunctioning can also cause a rise in your transmission’s temperature. This part is tasked with measuring the fluid that goes into the transmission. If it doesn’t send enough, it can overheat. Getting your car serviced regularly by a transmission specialist can reduce the chance of these things happening. 

Is Your Transmission’s Temperature Too High? 

If your transmission’s temperature is above 220, your car is at risk. These high temperatures lead to overheating. And, sometimes rapidly, parts of your vehicle can become damaged, including hardened seals, slipping plates, burnt-out clutches, and so forth. Complete failure is the eventual end result. 

How to Know if Your Transmission is Overheating

There are a few different ways you can find out if your transmission is overheating. The sooner you recognize it, the sooner you can take action to protect your vehicle. 

  • Warning light. One of the first indicators that your transmission is overheating will be the warning light on your dash. If there is any issue - including overheating - it will turn on. It is important to note that this may be warning you of other transmission issues, as well, such as low fluid. 

  • Burnt smell. One cause of a burning smell is a transmission that is overheating. It is important that you pull over and get this checked before you cause more serious damage. 

  • Difficulty shifting gears. Overheating transmissions do not work properly. And that means they may have difficulty shifting gears. If you are experiencing this, get your car checked out right away. 

  • Hot engine. When your transmission is running too hot, the feeling of being overworked will carry over to the engine, too. And it is not uncommon to see that light come on as well, warning you that your engine is about to overheat. 

Lowering Your Transmission’s Temperature

To lower your transmission's temperature, there is an easy and simple solution. Ready? Pull off the road to a safe space and turn the car off. This will allow it to cool down completely. This is also a good time to check your level of transmission fluid, adding some if necessary. 

Do not continue to drive your car while the light is on or you will damage your transmission. 

Is Your Transmission’s Temperature Too Low? 

It is possible for your transmission’s temperature to be too low. And this could be dangerous, too. Transmissions that have low temperatures struggle to reduce the condensation inside the unit. And, as a result, the car will not function as well as it should.

Cold weather is a very common denominator in transmissions with low temperatures. To keep this from happening, simply give your car a chance to warm up before driving it when the outside temperatures are low. 

Expert Transmission Care

Whether your transmission temperature is too high or you are experiencing other signs of wear or tear, the technicians at Circle D Transmission can help. We have been servicing the vehicles of those in the greater Houston area since 1976.


Contact us today at (713) 895-7019.

Should You Check Your Transmission Fluids While Your Car is Running?

man checking transmission fluid

Without transmission fluid, your car will not run. 

This fluid is necessary for keeping certain parts lubricated, cooling the transmission, and more. So, driving around with low fluid - or transmission fluid that is dirty - means that you are putting excessive stress on the unit. The result? Unwanted transmission issues

But, how do you check your transmission fluid? Should your car be turned off? Or should it be running? Let’s find out. 

Signs Your Transmission Fluid is Low

Your transmission requires transmission fluid to run well. So when it is running low, you will likely feel it. Here are a few signs of low transmission fluid. 

  • Overheating. Fluid is used to regulate the temperature within your transmission. When it is too low, the system can overheat. You may notice a burning smell
  • Difficulty shifting gears - or slipping gears. This is more noticeable in cars with a manual transmission but can be felt in automatic too. For instance, you may feel a slight delay or momentary weak acceleration. Slipping gears refers to your car not staying the geat it should be in. 
  • Clunking or whining sounds. Unusual noise that begins to come from the transmission can often be due to low transmission fluid. Sometimes a flush and change will leave the car running quietly. 
  • Leaking fluid. Anytime you see that fluid has leaked underneath your automobile, it is important to check your fluid levels. Transmission fluid is often red - so keep an eye out in your normal parking spot. Bear in mind that it may get darker, too. Regardless, if you notice a leak - it is time to get the car check out. 

Do You Check Transmission Fluid With the Car Running? 

It is possible to check your transmission fluid when the car is running and warm - and when it hasn’t been started and is cold. Either will work. To make this easy, your dipstick will have a cold and warm full line so you can easily tell where the should be. 

To get the most accurate reading of your transmission fluid, you will want to check your fluid with the car warmed up. Run it for about 10 minutes and leave it running while you check your transmission fluid level.

How to Check Your Transmission Fluid

You should consider checking your transmission fluid (and all your vehicle’s fluid) about once a month. It is a simple step to take to ensure y our car is running correctly. 

Below are the steps necessary to check your transmission fluid: 

  • Put your automobile in ‘park’ on a level surface. This will help you to get an accurate reading because the car will not be slanted. 
  • Let the car continue to run so that it is warmed up - and, of course, leave it running while you go through these steps. 
  • Find the transmission dipstick. Pull it out, wipe it clean, and re-insert it. 
  • Pull out the dipstick one more time and notice where your markings are and where your fluid is. Since your car is in warmed up, you are looking for the fluid to reach the warm line.

If your fluid is not where it should be, contacting your trusted transmission specialist for further direction is a good idea. 

Visit Your Local Transmission Specialists

If your fluid is low or doesn’t look right, it is best to have your automobile evaluated by skilled transmission specialists. That’s what you will find at Circle D Transmission. 

For decades, we have been helping those in and around the Houston, TX area with all their transmission needs. And we can help you, too. 

Contact us today at (713) 895-7019.

Transmission Fluid: What it Should Not Look Like

transmission fluid

Transmission fluid is an essential part of keeping your vehicle running properly. It is tasked with making the gears shift more seamlessly as it lubricates bearings and other moving parts throughout the unit. 

For the most part, as long as the fluid is routinely changed, it should keep everything running smoothly. But what happens if it’s not? Do you know what transmission fluid should look like? 

How to Check Your Transmission Fluid

You don’t have to know much about your transmission, but it is always a good idea to know how to check your transmission fluid. 

Why? Because knowing your fluid levels and color are crucial in maintaining your vehicle. And it can alert you that something is wrong before it gets worse.

Although each automobile varies slightly, below is a general guide on how to check your transmission fluid. 

  • When you are checking fluid levels, you want to make sure your vehicle is on a level surface. 
  • Always check the transmission fluid when the car is warm. So, turn it on, leave it in park, and let it warm up. 
  • Look for the dipstick for your transmission. This is not the one designated for your oil - though you may find the two near each other. 
  • Pull out the dipstick and wipe it clean with a dry, clean rag and then place it back in. Remove it again and look where the level is. There should be indicators that say, “full” or “low.”

If your fluid is low, it needs to be addressed right away. You will want to pay attention to the color, too. Of course, you could always swing by your local transmission shop and have them take a look at your transmission fluid to ensure that all is well. 

What Healthy Transmission Fluid Looks Like

Healthy transmission fluid when it is added is going to look bright red. It is safe to assume that it is new - or like new - when it is this color. And, your transmission should be running well. 

As time passes, the fluid will begin to turn a bit darker red. While it is still ok, you don’t want it to get any darker or turn brown. This is the time you should be contacting your local transmission experts to have your fluid changed. 

What Transmission Should Not Look Like

If you decide to check your transmission fluid on your own, it is imperative that you know what it should not look like. If you pull out that dipstick and you see any of the below, it is time to reach out to your trusted transmission specialist. 

  • Brown. If your transmission fluid is brown, this means that oxidation has begun. You will want to have your transmission serviced. 
  • Dark Brown/Black. As the transmission fluid gets darker it is a sign that it has fully oxidized and is contaminated. This means it is likely causing damage inside your transmission. Immediate attention is required. 
  • Pink fluid or a foam-like fluid. If you see a pink fluid or foam-like fluid when checking on your transmission, this is a sign that it may have moisture in it. This could seriously put the health of your transmission at risk. Immediate attention is required.

Having your transmission cared for routinely is the best way to avoid any of these situations.   

Need Healthy Transmission Fluid? 

If your transmission fluid is the wrong color or if your transmission itself is showing signs that it may be ailing, then it is time to reach out to the pros at Circle D Transmission

We have been serving the transmission needs of residents throughout the greater Houston area since 1976 - and we are here for you. 

Contact us today at (713) 895-7019. Or, schedule an appointment online.

What is a Transmission Solenoid?

transmission solenoid

On average, your car is made up of about 30,000 parts - from the engine itself all the way down to the nuts, bolts, and bearings that keep everything together. And each of these parts works with the others to create the nice ride that you have.

One very necessary component is your transmission. Using a combination of sensors, gears, fluid, and hydraulics, your automobile is very easily able to drive at various speeds with smooth transitions. And much of this is thanks to the transmission solenoid within it. 

A solenoid is a small part with a big role. Let’s take a closer look at what this transmission solenoid is - and how to tell when it is not performing well. 

What is a Transmission Solenoid? 

Simply put, a transmission solenoid controls the flow of fluid throughout a vehicle's transmission system. Often having two or more, these small valves open and close to allow fluid to flow into and throughout the transmission when it is electrically signaled to do so. 

When running smoothly and allowing the flow of transmission fluids, solenoids will let the vehicle's speed accelerate and decelerate smoothly. However, when they aren’t as efficient in moving the fluid - or they stop altogether - problems can occur. 

Being aware of any signs of potential issues with your transmission solenoid should prompt you to seek repairs before things get worse. 

Signs of a Transmission Solenoid Problem

Transmission solenoids are designed to last - some even for the life of the vehicle, But, it is not at all uncommon for them to fail. This is especially true since there are multiple parts that make up the unit. 

Below are a few signs that your transmission solenoid may be struggling: 

  • Delayed Shifting. Your car should automatically switch from gear to gear smoothly as your speed increases and decreases. 
  • Skipping Gears. If there are issues with certain gears, they may be skipped over. This could be due to a bad solenoid. 
  • Unable to Move Out of Gear. If your car is stuck in the same gear and will not shift, this is a big indicator of a bad solenoid. 
  • Check Engine Light. If the check engine light is illuminated on your dash, it is always a good idea to get your car checked as it could be your solenoid. 
  • Sluggishness. If your automobile suddenly seems to lose its ability or gumption to move when you want it to, it could be protecting itself from gear trouble due to a bad solenoid. This is often referred to as limp mode. 

In general, having a bad solenoid will often impact how well (or poorly) a transmission shifts between gears. If you start to notice anything different as you hit the gas - you should have your car examined by a transmission specialist. 

Can You Drive with a Bad Transmission Solenoid?

Continuing to drive an automobile that is showing signs of an ailing transmission solenoid can be dangerous and can lead to bigger issues down the road. For instance, it could cause you to drive in gears that do not match your speed. Doing so can also lead to an overheating - or transmission failure.

In other words, this is never a good idea. 

Having Transmission Solenoid Trouble? 

If you are experiencing signs of trouble with your transmission solenoid, then it is time to contact Circle D Transmission at (713) 895-7019. Or, schedule an appointment online. 

We are here to diagnose an issue with your transmission, as well as offer preventative service to the residents in and around the Houston area.

What’s the Cost of Transmission Diagnostics in Houston, TX?

transmission part

You rely on your motor vehicle for many different things. So if it begins to show signs of transmission trouble, undergoing a diagnostic test using scanning software will allow the mechanic to pinpoint exactly what needs their attention. Of course, this may leave you wondering just how much transmission diagnostics in Houston, TX is going to cost you.

Here’s everything you need to know.

Signs of Transmission Trouble

The transmission is an integral part of your automobile. And knowing what signs to look for is important. If you notice any of the symptoms of transmission trouble, it is a good idea to get your car to the mechanic for transmission diagnostic testing as soon as possible.

  • Unusual noises, such as humming, clunking, or whining sounds

  • Burning smells

  • The check engine light is on

  • Hesitation when driving or no response when in gear

  • Transmission fluid leak

  • Shaking when shifting gears

  • Won’t go into gear (or slow to do so)

  • Slipping gears (changing gears without you doing it)

  • Noisy when in neutral

What is a Transmission Diagnostic?

Not too long ago, most mechanics had to take their time scouring over every detail of a transmission to determine what repair needed to be made. Fast forward to today and while many transmission experts will still do these manual assessments, diagnostic tools are now also used. Most diagnostic tools consist of factory (or even aftermarket) software that is plugged into the OBD2 port in order to take a look inside the car and give insight as to the problem.

It is common for some minor transmission issues to be diagnosed quickly. But sometimes it takes time to test different real-life conditions and determine what the actual problem is. A thorough mechanic will go through each of the individual components that create your transmission to determine which ones may need attention.

The evaluation should include:

  • A check of the transmission fluid

  • A scan using the diagnostic tool

  • A road test to duplicate your complaint

  • A lift inspection (if necessary) to pinpoint a leak or noise

It is important to note that older cars will require a more in-depth look that relies less on diagnostic tools and more on manual diagnostic skills.

What’s the Cost of Transmission Diagnostic?

The cost of transmission diagnostics in Houston, TX will depend on where you get the testing done as each repair shop will have its own prices. On average, though, you can expect to pay between $100 and $175.

Your car’s transmission is incredibly complex and it requires a lot of skill in order to repair it when it goes awry. That means you cannot just settle for any mechanic. You may be tempted to opt for the cheapest quote you get, but you could end up with a mechanic that causes more damage.

Diagnostics at Circle D Transmission

If your vehicle is showing signs that the transmission may be in trouble, don’t delay in seeking diagnostics testing. CDT offers transmission diagnostics at an affordable rate performed by mechanics with a high level of precision. If you’ve been looking, we are the right repair facility.

To learn more, contact us at 713-895-7019.

What to Do When Transmission Starts Making Noises

pieces of an automotive transmission

As the heartbeat of your car’s engine, the transmission is responsible for ensuring the proper amount of power is sent to your wheels to drive at a given speed. In other words, the transmission makes sure the engine spins at the right rate, to pull power from the engine to give to the wheels. So if your transmission begins to make noises, that’s an indication that something is wrong, and other problems may follow. If your transmission begins making noise, take it to a reputable transmission center ASAP. Small problems can often be fixed early on,  to prevent them from turning into costly repairs.

Signs of Transmission Problems

Strange sounds in your vehicle can be an indication of a transmission problem. If you hear buzzing, whining, humming, or clunking noises, it is essential that you take your car in for transmission diagnostics as soon as possible. These sounds can indicate transmission failure. However, keep in mind that transmissions are made up of hundreds of parts, so knocking or clicking noises may also just be a worn-out case, or bearing, requiring a minor transmission repair.

Other signs that you could have a problem with your transmission include:

  • Leaking fluid

  • Grinding, shaking, jerking

  • Delayed shifting into gear

  • Inability to shift gears

  • Burning smell

  • Service engine light

If you experience any of these problems, it’s smart to take it to a top-rated shop for transmission diagnostics as soon as you can.

Common Problems with Transmissions

A lot of things can go wrong with your car’s transmission but some transmission problems tend to occur most frequently. These include:

Dirty or Low Transmission Fluid

Whether you drive a manual or automatic, plenty of clean transmission fluid is essential to keep your car running properly. Low fluid due to a leak, or dirty fluid can lead to overheating, grinding, gear slippage (automatic vehicles), or lack of power (manual cars).

Worn Needle Bearings

In automatic vehicles, the needle bearings prevent gears in the torque converter from grinding. If they wear out, you’ll likely hear noise from your transmission that sounds like grinding or a brushing noise. If you take your car in for repair quickly, you can prevent premature failure of your gears.

Aged Gear Synchronizers

Manual transmission vehicles rely on the gear you are about to shift into, to spin at the same speed that the gear you’re shifting from. When the synchronizers (synchros) become worn down you’ll experience problems. Left untreated, these worn synchros can lead to complete transmission failure.

Worn Clutch

Worn clutches in manual transmission cars can be due to fluid leaks, or improper driving. Fortunately, most clutch replacements are quick, affordable fixes.

Poor Maintenance

Believe it or not, the number one cause for transmission problems is lack of owner maintenance.  All vehicles have manufacturer maintenance recommendations, but many car owners don’t follow them. Simple preventative transmission services can prevent the majority of transmission problems.

Transmission Diagnosis in Houston

To schedule preventative transmission service, or to diagnose a problem with your transmission, contact Circle D Transmission at 713-895-7019, or book an appointment online. 

Understanding the Cost Behind Transmission Repairs

mechanic working on vehicle

Dealing with a transmission repair likely wasn’t on your to-do list - or even in your budget. But it is definitely a necessity when it comes to having a working vehicle. Without a functioning transmission, your car isn’t going to run properly (or maybe even at all).

The costs of rebuilding or replacing your transmission can vary based on several factors, but it usually runs anywhere from $3,000.00 to $5,000.00 on average. And, while we know how important this part of the car is, what makes it so costly?

Factors That Impact the Cost of Transmission Repair

The transmission of your car is one of the main parts. It also has many different parts that make it a functioning system. So, when something goes wrong, it could be a number of different things - as well as vary based on certain factors.

  • The Symptoms. Like we said, there are many things that can go wrong. Are you smelling a burning smell? Is your check engine light on? Will the car not drive at all? Depending on what the exact issue is will impact the overall cost of the repair.
  • The Type of Transmission. Is your car manual or automatic? This matters as automatic transmissions are more complex and, as a result, their repairs tend to be more costly.
  • The Year of Your Vehicle. If your auto is newer, then the parts for the repair should be relatively easy to find. However, they are likely to be more expensive. For older cars, finding the parts may be difficult and also lead to expensive parts.
  • The Make of Your Vehicle. Automobiles made outside of the U.S. tend to have a much higher markup on their prices so you should expect to pay more.
  • Your Location. As with any cost of living, depending on where your car is located, you may find the cost of transmission repair higher or lower than in other areas.

Types of Transmission Repair

There are two common types of transmission repair that you can encounter when you take your car to the repair shop: a rebuilt transmission or a remanufactured transmission. They each come with different costs and have their pros and cons.

A rebuilt transmission means rebuilding the transmission with the necessary new parts - without replacing the entire unit. This is a time-consuming process, as the transmission must be taken apart, each part examined, and then put back together.

A remanufactured transmission is already built and the entire transmission is removed and replaced. This is much faster than rebuilding and you have the satisfaction of knowing that all parts have been replaced.

Having a trusted mechanic with extensive transmission knowledge can help you decide the best route for you.

Is Transmission Repair Worth it?

It is normal to feel as though you just want to ditch the car and buy a new one - especially because the transmission repair cost can seem very high. Unless your car is old and in bad shape, you may want to consider the depreciation of a new vehicle, the monthly car payments you are sure to have, additional insurance costs, and so forth.

When you break it down like that, it is easier to see that getting through this one hefty, unexpected cost can actually keep your car running longer and stronger - without all the added expenses of a new car.

Review your options, learn about any warranties that come with your transmission repair cost, and make your decision.

To learn more about transmission repair from a trusted source, contact Circle D Transmission at (713) 895-7019.

Circle D Transmission Now Offers High Horsepower 6L80 and 6L90 Parts

Performance TransmissionCircle D Transmission is excited to announce that we are now offering High Horsepower 6L80 (6L80e) and 6L90 (6L90e) Performance Transmission Rebuild Kits and Parts. We offer FREE UPS Domestic Ground Shipping. Most orders ship the same day if ordered by 12pm, Central Standard Time, Monday through Friday.

Click here for more information about kits and parts

CDT’s Kits are available in multiple horsepower levels:

  • 6L80 (6L80e) Level 2 Rebuild Kit rated up to 550 RWHP

  • 6L80 (6L80e) Level 3 Rebuild Kit rated up to 750 RWHP

  • 6L80 (6L80e) Level 4 Rebuild Kit rated up to 1000 RWHP

  • 6L90 (6L90e) Level 2 Rebuild Kit rated up to 600 RWHP

  • 6L90 (6L90e) Level 3 Rebuild Kit rated up to 750 RWHP

  • 6L90 (6L90e) Level 4 Rebuild Kit rated up to 1100 RWHP

CDT began the journey of taking the factory GM transmission and transforming it so that it could handle the horsepower revolution present today when we purchased a Gen 5 Camaro for R&D. Along the way, there were many requests from fellow horsepower junkies to purchase CDT’s revolutionary Performance Rebuild Kits for the 6L80 (6L80e) & 6L90 (6L90e.)

These Rebuild Kits have the necessary components to dial in your transmission rebuild correctly - from hydraulics to clutch clearances to transmission end-play. Included in each Kit is valuable information pertaining to transmission assembly tips and detailed CDT rebuild instructions. These kits pick up where GM left off in terms of strengthening the OE transmission to handle the ever-increasing horsepower levels of today’s vehicles.

Besides offering the complete rebuild kits for the 6L80 (6L80e) and 6L90 (6L90e) we also offer individual components. One of our more popular parts is the 4140 H.T.S.R. (Heat Treated and Stress Relieved) Billet Reinforced Output Carrier – also known as the Billet Planetary. It includes a 4140 billet steel drive to strengthen the spline area. The drive plate is milled and contoured to the planetary housing to eliminate any possible separation under a load. This is a drop-in part for vehicles producing over 750 RWHP and also for Nitrous and/or Heavy Vehicles including trucks, SUV’s and CTS-V’s.

Learn more:

Another popular option is the Billet Shaft, Hub and 4-5-6 Clutch Kit for both the 6L80 (6L80e) and the 6L90 (6L90e.) The billet intermediate shaft is made to our specifications to address the weak stock shaft issue, is precision machined from 300M alloy steel and is heat-treated to add strength and durability. The 4-5-6 Clutch Hub is also manufactured to address the weakness in the stock hub while at the same time it improves lubrication to the 4-5-6 clutch module. It is made from 4140 H.T.S.R. billet steel. Our 4-5-6 clutch modules increase apply area and the G3® friction material is formulated to maximize heat resistance and minimize wear to the clutch module.

Understanding the Process & Cost Behind Transmission Repair

Transmission repair

Do you suspect that your vehicle has a major transmission issue? Are you dreading having to research transmission repair options? And, what about how much money the transmission repair is going to cost? Are you also wondering if your car or truck’s transmission is even worth repairing?

If you’re asking yourself those questions, you are not alone and we understand your possible stress and confusion. After all, transmission repair is a costly investment that you are making into your vehicle. Transmission repair is incredibly complex and requires a proper diagnosis from the get-go or else you could open yourself up to huge levels of frustration.

At Circle D Transmission, we are here to guide you through the transmission repair process so that you can make an informed decision. In the end, with the correct information and knowledge, you’ll be able to understand your options and the associated costs behind transmission repair so that you can make a decision that is best for your situation.

So, let’s break down the different repair options when it comes to transmission repair. There are two main options nowadays if your transmission requires rebuilding. You can have your transmission rebuilt by a local facility or you can replace it with a remanufactured transmission. While either of these options can provide you with a quality transmission, there are pros and cons to each.

Let’s start by mentioning the benefits of each option.

One benefit of rebuilding your transmission is that we are able to upgrade parts that frequently fail with high mileage and/or have aftermarket updates. At Circle D Transmission we have decades of experience rebuilding transmissions and we can ward off future issues by replacing/upgrading parts that are known to fail. A benefit of replacing with a remanufactured transmission is that the turn-around-time is typically much faster than rebuilding since the transmission that we purchase is already built and waiting on the shelf of one of our suppliers.

Now, let’s move on to discuss warranties. When we rebuild your transmission here at Circle D Transmission, the typical warranty that we offer is 2 years or 24,000 miles, whichever comes first. Warranty issues must be brought back to us at our location in Houston, Texas. If you replace it with a remanufactured unit, the warranty can go up to 3 years or 100,000 miles, whichever comes first. Remanufactured transmissions typically offer a nationwide warranty. Both warranties typically cover parts and labor. So, if you are planning to keep your vehicle for many years and/or travel out of the greater Houston area often, you may want to consider a remanufactured transmission for greater peace of mind.

You also need to consider if your vehicle’s transmission is worth fixing. When clients bring this valid question up to us, we urge them to assess the rest of the vehicle. If the rest of the vehicle is in good working order then it probably makes sense to invest in the transmission and have it rebuilt or replaced. If you go to trade in a vehicle with a malfunctioning transmission, you’re going to take a fairly substantial hit in the value of the vehicle -- one that is likely equal to the cost of repairing the transmission. Other costs associated with purchasing a new vehicle are:

  • Depreciation of the new vehicle

  • Unless you pay cash, you will have a monthly payment with finance charges

  • Taxes and fees paid to purchase the new vehicle

  • Additional insurance costs on the new vehicle

Are you thinking about buying a used vehicle instead, so that you don’t have to take out as large of a loan and can factor in less loss due to depreciation? Think again... you could possibly be buying someone else’s problems... including a malfunctioning transmission in the near future. By keeping your current vehicle, you know the service history, so you’re less likely to have a surprise.

If you allow Circle D Transmission the opportunity to earn your trust, we assure you that we will provide you with ample information upfront so that you can make a decision that makes sense for you now and years down the road!

So how much does it cost to repair or replace a transmission? The average cost to rebuild or replace with a remanufactured unit is $3,000 - $5,000.

For an estimate, call 713-895-7019 or click here to schedule an appointment.