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How To Reset Transmission Control Module In Chevy

How To Reset Transmission Control Module In Chevy

If you're weary of your Chevy's old transmission and want to replace it, you'll need to know how to reset transmission control module Chevy. The process involves turning the key position, pressing the gas pedal, waiting, turning the keys off, releasing the gas pedal, waiting for the resetting process and taking it for a ride. We will discuss the process more thoroughly in this article. As well as other things you have to know about the transmission control module.

Auto Repairs Are EXPENSIVE

How to Reset Transmission Control Module Chevy: The Basics


To understand the process of how to reset Transmission Control Module Chevy, let us first discuss the basics. To keep you and your passengers moving forward, the transmission control module works in tandem with the engine and transmission. When you're driving forward, this element is in charge of calculating the optimal time and place to shift gears in order to make your driving experience as enjoyable as possible. 


The shift quality of your transmission system improves. Shifting between gears becomes smoother, making it easier on the gears. Your gears will not be subjected to as much wear and tear, allowing your transmission to last longer.


The control module is obviously an important aspect of your driving experience because it provides a key interface between your transmission system and your engine. Your car would be unable to shift gears as needed if the module was not functioning properly, which may result in not only a poor driving experience but also major technical issues that would entail costly repairs. 


These timely modifications also assist to reinforce your vehicle's overall efficiency, allowing you to urge more miles out of every gallon of gas you boost your tank. except for its basic duty, this control module might also send OBD2 codes to your car's computer if it detects a malfunction or other issue with the transmission. These codes appear as a check engine light on your dashboard, essentially alerting you to the actual fact that anything is wrong beneath the hood.


Because of this module’s ability to send codes to the car's computer, it's a great way to spot transmission problems before they become serious. This, too, can help you avoid major damage and costly, time-consuming repairs in the future.


What are the symptoms of a bad transmission control module?

Signs of a Bad Transmission Control Module

An automatic transmission is made possible by a transmission control module that the transmission uses to select the ideal gear at any given time. Although these components are built to last, your transmission control module may succumb to a mix of heat fluctuations, abuse, and other day-to-day factors over time. So imagine if there’s an issue with the transmission control module and it wouldn’t be able to actually do its job of choosing the ideal gear.

Left alone, issues with the transmission control module will sacrifice your driving performance and fuel economy. So it’s best to be sensitive to the common symptoms that there’s an issue. Here are the common symptoms:

1. Shifting in an Unpredictable Way

A malfunctioning module can cause erroneous or unintentional shifting because the TCM delivers the shifting signals. Your car may shift into neutral or a gear it wouldn't ordinarily shift into without notice. It's at best a minor annoyance. But the worst-case scenario is that it could result in a serious accident. 


  1. Poor Fuel Economy


An automatic transmission is designed to provide ideal gear selection and timing, resulting in a vehicle that is extremely fuel efficient.  This is especially true if you could not see any other possible reason for it happening.


  1. Difficulties Shifting into Higher Gears


The transmission should shift into higher gears at the appropriate time as you accelerate down the motorway. If this does not occur, the engine's RPM may continue to rise rather than gradually decrease as an upshift happens, resulting in you never reaching your desired speed.


  1. Having trouble downshifting


When driving down a highway and exiting, your transmission should progressively shift into lower gears as the speed drops. It should be in first gear when you come to a stop. When you come to a halt with a bad TCM, you may still be in high gear. Your automobile may not move at all if you're in too high a gear before accelerating.


  1. Getting Caught Up in the Same Gear

This problem could manifest itself as a vehicle stuck in neutral or first gear. The transmission will not shift, and you will either not be able to go anywhere or will be limited by the first gear's maximum speed.

6. Check Engine Light Lights up

When the check engine light illuminates on your dashboard, it could signal a number of reasons. If the light shows while you're having trouble shifting, it's most likely coming from the TCM or another component inside the transmission system. To discover the cause of the warning light's appearance, a professional can utilize a scan tool to look for any Diagnostic Error Codes.


If you notice any of these signs, it's likely that your transmission control module is malfunctioning. To be sure, have your complete transmission system fully inspected by a qualified expert.


Because of how dangerous it may be to drive with transmission control module problems, you'll want to get them taken care of as soon as you notice them. You may lose control of your car and cause an accident if you are unable to shift appropriately or if you change out of gear unexpectedly.

The Process of How To Reset Transmission Control Module Chevy


Is your Chevy shifting sluggish? It may benefit from transmission resetting. Here is a step by step process on how to reset Transmission Control Module Chevy:


Step 1: Go Through the Key Position


The key position is the first step in how to reset Transmission Control Module Chevy. You must turn the key to position 2 and set it. Check your car's dash lights. Check to see if the dash lights are on. You're ready to move on to the next stage once they're visible.


However, you do not need to press the accelerator or start the car in the first stage. Be cautious after you've set the crucial position. Keep your ears to the ground. Pay attention and expect to hear two clicks. The dash lights will be turned on after that. Do not start the engine while in this position.


Step 2: Press the Gas Pedal


You must now proceed to the following step after completing the key position and dash lighting. You will go over the gas pedal here. Make your move and step on the gas. Make sure you're pressing it all the way down. It will assist to activate the kick-down switch if you press the accelerator pedal all the way to the floor.


You only need to activate the kick-down switch in this position. Don't take your foot off the gas pedal. Continue to push it down. Wait for 10 Minutes. Continue to press the gas pedal. Be patient and expect that after 10-12 seconds the gas pedal will start to work on the resetting process. 


Step 3: Turn the Key Off


After you've pushed the accelerator pedal for around 10-12 seconds, you must return your attention to the key. But don't let go of the gas pedal. Keep in mind that you must complete this step while maintaining your foot on the pedal. Do you recall turning the keys to 2 previously? Yes, and now you must go over them again and return them to their original positions.


All you have to do now is turn off the key. Turn the key to zero with your hands. You may have developed a habit of turning the key to zero and then removing it. However, in this scenario, you are unable to do so. The key cannot be removed. After returning the key to its original position, you must keep it there. 


This approach of not removing the key, however, is not compatible with all models. Double check your Chevy model if it is required to remove the key or not. Nevertheless, in most of the Chevy’s the key is not removed.


Step 4: Release the Gas Pedal


Remove the force from the gas pedal once the key has been reset to zero. Some individuals are clumsy and remove the pedal before turning off the ignition.  Do not do that and see to keep your feet on the pedal all throughout the previous step. Only when you've finished turning the key back to zero, release the pressure on the gas pedal.


Step 5: Give it a Rest


We understand that you don't want to be kept waiting. However, doing so will make the reset procedure go more smoothly. You must allow your Chevy some down time after removing your feet from the throttle pedal.


Allow for a 2-2.5 minute rest period for your engine. Make sure the key is in the ignition's left-hand position, which is the OFF position. Don't make any changes to the key. Take a breather before moving on to the next step.


Step 6: Take a Drive


We finally arrived at the last step on how to reset Transmission Control Mode Chevy. Now all you have to do is drive! You should drive your automobile after you've finished programming the TCU and ECU. The journey should take no more than 20 minutes. The TCU procedure, as well as the ECU, will definitely function together. They'll try to figure out how you drive. They will undoubtedly examine your driving pattern. They'll try to figure out how you drive. They'll keep an eye on your driving habits and adjust accordingly. Keep in mind that you're teaching your engine how to drive. So don't try to compete in a race. You don't always race your car, do you?


If not, make sure you go at a reasonable speed. The speed at which you normally drive your car will also be the speed in this scenario. Check to see if the transmission you've chosen is normal and smooth. You may effortlessly shift your transmission and have something fresh in your car in this manner.

Will disconnecting battery reset TCM?


When you’re trying to figure out how to reset Transmission Control Module Chevy, you may want to know will disconnecting battery reset TCM. The TCM is not reset by disconnecting the battery; instead, a transmission scan instrument is required. This operation, as well as the solution to the shifting issue, cannot be completed by simply detaching the battery terminals.


Your driving habits will need to be relearned if you have a new TCM or one that has been entirely reset. If it still doesn't seem correct, let it at least a week of typical driving to allow the TCM to relearn shift points. Bring it back to the person who replaced it if it continues to drive poorly. Alternatively, have them check to see if the transmission isn't having an internal problem.

How do you check a transmission control module?

The transmission control module is usually situated beneath the cover at the back of the transmission and should be close to the engine control module. The gearbox control module can be found in the interior beneath the center console or under the hood near the automobile battery.


If you have a problem with this control module, you should see a repair specialist as soon as possible to avoid further damage to your car's battery and transmission. Pay attention to the signs and symptoms of a failing transmission control module as enumerated  above.


You already know the basics of the transmission control module, the signs it’s getting bad and how to reset the module. You'll never grow tired of the same transmission now that you know how to reset Transmission Control Module Chevy! The procedure we've described is quite simple. All you have to do now is remember the notes and go for it.