Is Your Buick LaCrosse Shifting Erratically or Stuck in Gear?
If you’re experiencing frustrating transmission problems with your 2006-2009 Buick LaCrosseโlike harsh bangs between gears, a delay when shifting from park to drive, or the dreaded check engine lightโa failing Transmission Control Module (TCM) is the most likely culprit. As the electronic brain of your automatic transmission, the TCM dictates every shift. When it fails, it can make your reliable Buick feel unpredictable and unsafe to drive. This isn’t just an inconvenience; it can lead to further transmission damage if not addressed.
“A customer’s 2007 LaCrosse came into my shop last week with a classic case of what he thought was a bad shift solenoid. The car would shift hard from 1st to 2nd and sometimes get stuck in 3rd gear (limp mode). He was ready for a costly internal transmission repair. However, after a quick scan, I saw a P0700 code and communication errors with the TCM. Instead of dropping the pan, we replaced the original TCM with one of our pre-programmed units. The problem was solved in under 30 minutes, saving him hundreds of dollars and a lot of unnecessary work. It’s a textbook example of why diagnosing the TCM first is critical on these GM vehicles.”
The Direct Solution: A VIN-Programmed Replacement
This OEM-quality T42 TCM is the definitive solution for your vehicle’s transmission woes. We take all the guesswork and expense out of the repair by pre-programming the module to your car’s specific Vehicle Identification Number (VIN). This means it arrives at your door ready for a true plug-and-play installation, with no need for an expensive trip to the dealership for programming. It restores the precise, smooth shifting you expect from your LaCrosse.
Common Symptoms of a Failing LaCrosse TCM:
- โ Harsh, jerky, or unpredictable gear shifts.
- โ Vehicle is stuck in “limp mode” and won’t shift past 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 present.
- โ Delayed engagement when shifting into Drive or Reverse.
- โ Poor fuel economy and a feeling of lost power.
Plug-and-Play Installation: No Dealer Visit Required
For the 2006-2009 Buick LaCrosse, this job is straightforward for a DIYer or any professional mechanic. The module is conveniently located to make the swap simple.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the TCM: On your LaCrosse, the TCM is found attached to the lower air cleaner housing in the engine bay.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. Then, unbolt it from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical harnesses. Ensure they click into place.
- Final Steps: Reconnect the battery terminal. Start the vehicle and use a basic scan tool to clear any stored fault codes from the engine computer (ECU).
Technical Specifications for your 2006-2009 LaCrosse Transmission Control Module
- โ Part Number: 24235753
- โ Programming: Comes fully programmed to your VIN with the latest GM software updates.
- โ Quality: Built to meet or exceed original equipment standards for long-lasting reliability.
- โ Warranty: Backed by our one-year warranty for your peace of mind.
- โ Interchangeable Part Numbers: Replaces a wide range of part numbers including 24252114, 24234503, 24230461, 24234274, 24235754, 24238856, 24256960, and more.
Don’t let a faulty TCM ruin your driving experience. Order this VIN-programmed module today and restore the smooth, reliable performance of your Buick LaCrosse with confidence.