Is Your Chevy Colorado Shifting Erratically or Stuck in Gear?
If your 2008-2012 Chevrolet Colorado is experiencing harsh shifts, delayed gear engagement, or has the transmission warning light illuminated, a failing Transmission Control Module (TCM) is the most likely culprit. As the electronic brain of your automatic transmission, the TCM dictates every shift point and clutch pressure. Over my 20+ years in the shop, I’ve seen hundreds of these T42 modules fail due to heat cycles and electronic wear, leading to frustrating and unpredictable driving behavior.
Expert Pro Tip from a 20-Year Technician
Before you replace the module, take a moment to inspect the main electrical connector going into the TCM. On the Colorado, it’s located in the right-hand rear of the engine compartment. Unplug it and look for any green or white crusty corrosion on the pins or inside the connector housing. Sometimes, moisture intrusion can cause poor contact and mimic the symptoms of a failed module. Cleaning the connector with a dedicated electronic cleaner can sometimes be a simple fix, but if the pins are clean and the problems persist, the module itself has failed internally.
The Direct Solution: A VIN-Programmed Replacement
Forget expensive dealership visits and programming fees. This replacement TCM, part number 24235732, arrives at your door pre-programmed to your truck’s specific Vehicle Identification Number (VIN). This ensures it communicates perfectly with your Engine Control Module (ECM) and other vehicle systems right out of the box, restoring the smooth, reliable performance you expect.
Symptoms of a Failing 2008-2012 Colorado Transmission Control Module:
- โ Harsh, banging shifts or delayed gear engagement.
- โ Vehicle is stuck in “limp mode” (usually 2nd or 3rd gear).
- โ Check Engine Light or Transmission Warning Light is on.
- โ Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related faults are stored.
- โ Complete loss of shifting capability or intermittent communication failure.
- โ Poor fuel economy due to incorrect gear selection.
Plug-and-Play Installation: No Dealer Visit Required
You can get your Colorado back to perfect working order in your own driveway in under 30 minutes. This is a straightforward replacement that requires only basic hand tools.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts and to help reset the vehicle’s computer systems.
- Locate the TCM: On the 2008-2012 Colorado, the TCM is mounted in the engine compartment on the right-hand (passenger) side, towards the rear.
- Disconnect and Remove: Carefully unplug the electrical connectors. Press the release tabs firmly. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical harnesses. You should hear a click as they lock in.
- Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s always best practice to use a scan tool to clear any old fault codes from the system’s memory.
This module is a direct replacement for multiple GM service numbers, including 24235732, 24242391, 24234503, and 24252114, ensuring broad compatibility and a reliable fix for your transmission woes. Built to OEM specifications and backed by a one-year warranty, it’s the trusted choice for both DIY mechanics and professional repair shops.