What is Transmission Control Module TCM?
A transmission control module is an electronic mechanism that collects data and processes signals within your transmission in order to regulate the transmission’s gear shifting. Without this mechanism, your transmission wouldn’t be able to shift gears effectively and consistently.
Can a bad TCM cause transmission problems?
Your transmission may not even be causing you any problems, it might just feel like it is. A bad TCM can affect your fuel and air mixture, and your timing and spark control causing a feeling that your car is jumping due to a slipping transmission, but it could be your engine that’s choking up.
How do you diagnose a bad transmission control module?
Signs of a Bad Transmission Control Module
- Unpredictable shifting.
- Trouble shifting into higher gear.
- Trouble downshifting.
- Getting stuck in the same gear.
- Poor fuel economy.
- Check engine light comes on.
When to replace a Transmission Control Module ( TCM )?
Rather than relying on hydraulic or mechanical control over a transmission system, newer vehicles use a transmission control module instead. A car’s TCM will likely never need replacing, but if you have a bad transmission control module, immediate replacement (or repair) will be necessary.
Where is the TCM located in a car?
While swapping out a box might seem simple, the TCM is located inside the transmission in many modern cars, trucks, and SUVs. Opening the transmission is a laborious task, which is why it is reasonable to expect labor costs of at least $300 to replace the transmission control module.
What does a bad transmission control module mean?
A bad TCM will spell trouble for your vehicle and your ability to drive it. Fortunately, there are a few basic symptoms that you’ll most likely notice before this happens. If the Check Engine warning light illuminates on your dashboard, it could mean several things.
What does the Transmission Control Module processor do?
The TCM transmission module processor helps understand various signals transmitted by the drivetrain’s engine control module (ECM), and outputs signals to control a vehicle’s speed, shifting, and regulate the temperature inside the transmission.