End Your Uplander’s Shifting Nightmares for Good
If you’re dealing with a 2006-2009 Chevrolet Uplander that’s shifting harshly, getting stuck in gear, or throwing transmission codes, you know how frustrating it can be. The Transmission Control Module (TCM) is the brain of your automatic transmission, and when it fails, it can cause a host of problems that make your family minivan unreliable. This T42 Transmission Control Module, corresponding to part number 24240400, is the definitive solution. We pre-program it to your van’s specific VIN, ensuring it works perfectly right out of the box—no expensive trip to the dealership required.
A Technician’s Notebook
I remember a 2008 Uplander that came into the shop with a classic complaint: intermittent ‘limp mode.’ The customer said it would drive fine for days, then suddenly refuse to shift past 2nd gear. They’d already replaced two shift solenoids with no luck. A scan showed a generic P0700 (Transmission Control System Malfunction) but no specific solenoid faults this time. This is a tell-tale sign of a failing TCM. The internal logic fails intermittently under heat or electrical load, confusing the diagnostics. We installed one of our VIN-programmed T42 modules, and the problem was solved in under an hour. The customer saved hundreds by avoiding a wild goose chase and unnecessary transmission work.
Is Your Uplander Showing These Transmission Warning Signs?
- ✔️ Harsh, slamming shifts or delayed gear engagement.
- ✔️ Vehicle is stuck in one gear (often called ‘limp mode’).
- ✔️ The Check Engine Light or a transmission warning light is on.
- ✔️ Your scanner shows Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related codes.
- ✔️ Unpredictable downshifting or a complete failure to upshift.
- ✔️ A noticeable drop in fuel economy or signs of the transmission overheating.
DIY Installation: A Straightforward 30-Minute Fix
Replacing the 2006-2009 Uplander TCM is a job most DIYers can handle with basic tools. The module is conveniently located to make the swap simple and fast.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: On the 2006-2009 Chevrolet Uplander, the TCM is typically found mounted to the LH (driver’s side) strut tower in the engine compartment.
- Disconnect and Remove: Carefully unclip the electrical connectors. Be gentle to avoid breaking the plastic tabs. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Bolt the new, pre-programmed module into place and securely reconnect the electrical harnesses. You should hear a ‘click’ as they lock in.
- Final Steps: Reconnect the battery terminal. While our programming handles the software, it’s good practice to use a basic OBD2 scanner to clear any old fault codes stored in the system.
Verified Vehicle Compatibility
This module is a direct-fit replacement for the 2006-2009 Uplander TCM and is also compatible with a wide range of other General Motors vehicles. It interchanges with part numbers 24252114, 24234503, 24230461, 24240400, and more. Below is a partial list of compatible models. Please verify your part number or contact us with your VIN to ensure perfect fitment.
- Chevrolet Uplander: 2006-2009 (LH strut tower)
- Chevrolet Cobalt / HHR / Impala / Monte Carlo
- Chevrolet Silverado / Tahoe / Suburban / Avalanche
- GMC Sierra / Yukon / Savana / Envoy
- Buick Allure / LaCrosse / Lucerne / Rendezvous
- Pontiac G5 / G6 / Grand Prix
- Saturn Aura / Ion / Vue
- And many more GM models from 2006-2014.
Do I need to do any programming after installation?
Do I need to do any programming after installation?
No. This module arrives 100% plug-and-play. We flash it with the latest GM software calibrated specifically to your vehicle’s VIN before shipping. This eliminates the need for a scan tool or a visit to a dealership.
What is a ‘core charge’? Do I need to send my old part back?
There is absolutely no core charge for this part. You can keep your old module or dispose of it without any extra fees or hassle.
How do I provide my VIN for programming?
You can enter your 17-digit Vehicle Identification Number (VIN) during the checkout process. This ensures we program the module for your exact vehicle configuration for optimal performance.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. In many cases, a faulty TCM is the root cause, and replacing it will resolve the code. However, P0700 can also be triggered by other transmission issues. This part is designed to correct failures within the module itself, which is a very common source of this code.