Is Your Grand Prix Shifting Erratically?
If you’re dealing with harsh, unpredictable shifts, a transmission that feels like it’s slipping, or your 2006-2008 Pontiac Grand Prix is stuck in limp mode, the problem is very likely a failing Transmission Control Module (TCM). As a technician with over 20 years of experience, I’ve seen this exact scenario countless times. The TCM is the electronic brain of your automatic transmission, and when it starts to go, it can make your car feel unreliable and unsafe to drive. Don’t let a faulty module convince you that you need a costly new transmission—often, this single component is the root cause.
“A customer’s 2007 Grand Prix came in last week with these exact symptoms—a P0700 code and it wouldn’t shift past 2nd gear. They were quoted over $3,000 for a transmission rebuild at another shop. We scanned it and confirmed communication loss with the TCM. After installing one of our pre-programmed modules, which took less than 30 minutes, the car shifted perfectly. It saved them thousands and solved the entire problem.”
The Direct Solution: A VIN-Programmed 2006-2008 Grand Prix Transmission Control Module
This T42 TCM is the definitive fix for your transmission woes. We take all the guesswork and hassle out of the repair. Before we ship it, we program the module with your car’s specific Vehicle Identification Number (VIN). This ensures it communicates flawlessly with your vehicle’s engine computer and other systems the moment you plug it in. There’s no need for an expensive trip to the dealership for programming—it’s a true plug-and-play solution.
Key Features & Benefits:
- ✔ Eliminate Shifting Problems: Puts an end to harsh shifting, delayed gear engagement, and slipping for a smooth driving experience.
- ✔ VIN-Programmed for Your Car: Arrives ready for installation with the latest GM software updates for your specific Grand Prix. No extra tools or dealer visits needed.
- ✔ Clear Common Fault Codes: Directly addresses persistent diagnostic trouble codes (DTCs) like P0700, P0750, and other solenoid-related errors.
- ✔ OEM-Quality & Reliability: Built to meet or exceed original equipment standards for dependable, long-term performance, backed by our one-year warranty.
- ✔ Restore Fuel Economy: A properly functioning TCM ensures efficient shifting and torque converter lockup, helping to restore your car’s original MPG.
Plug-and-Play Installation: No Dealer Visit Required
For the 2006-2008 Pontiac Grand Prix, the TCM is located under the lower air cleaner housing, making it accessible for a straightforward DIY repair. You can have your car back on the road in under an hour.
- Safety First: Disconnect the negative terminal from your car’s battery to prevent any electrical shorts and to help reset the vehicle’s computer systems.
- Access the Module: Remove the air cleaner assembly to gain clear access to the old TCM. It will be mounted with a few bolts.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. Note their orientation. Then, unbolt and remove the faulty TCM from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed TCM in place of the old one and securely tighten the bolts. Reconnect the electrical connectors—they will only fit one way.
- Reassemble and Test: Reinstall the air cleaner housing. Reconnect the battery terminal. Start the car and take it for a test drive to confirm that all shifting issues are resolved.
This part, 24235340, is a direct replacement for a wide range of GM T42 modules, ensuring compatibility and restoring the precise electronic control your transmission needs. Don’t put up with poor performance any longer. Order your pre-programmed 2006-2008 Grand Prix Transmission Control Module today and get your car driving like new again.