Get Your Family’s Minivan Back on the Road Safely
As a mechanic with over two decades of diagnostic experience, I know how unsettling it is when your family vehicle, like a 2006-2009 Chevrolet Uplander, starts acting up. That sudden, harsh bang when it shifts gears, the refusal to shift past second gear, or a glowing check engine light can turn any trip into a stressful ordeal. More often than not, the culprit isn’t a catastrophic mechanical failure inside the transmission, but a fault in its electronic brain: the Transmission Control Module (TCM).
This T42 TCM, corresponding to part number 24243901, is the definitive solution to these common and frustrating issues. It’s not just a replacement part; it’s a complete repair solution. We pre-program each module to your Uplander’s specific Vehicle Identification Number (VIN) before it ships. This critical step ensures the module communicates flawlessly with your vehicle’s other systems right out of the box, restoring the smooth, predictable shifting you rely on without requiring an expensive trip to the dealership for programming.
Case Study: The Uplander That Wouldn’t Shift
A customer brought in their ’08 Uplander with a classic complaint: it was stuck in what felt like third gear (limp mode) and the transmission warning light was on. They were worried about a multi-thousand dollar transmission rebuild. I pulled the codes and saw a P0700 (Transmission Control System Malfunction) and several solenoid-specific codes. Instead of tearing into the transmission, I checked the TCM. After seeing no external damage, I knew from experience that these T42 modules are prone to internal electronic failure. We installed a VIN-programmed module, cleared the codes, and the van was shifting perfectly within the hour. It’s a repair that saves customers time, money, and a lot of anxiety.
Is Your Uplander Showing These Warning Signs?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution for your 2006-2009 Uplander TCM issues.
- ✔ Harsh, erratic, or delayed gear shifts.
- ✔ Vehicle is stuck in “limp mode” (usually 2nd or 3rd gear).
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related faults are present.
- ✔ Complete failure to upshift or downshift.
- ✔ A noticeable decrease in fuel economy.
- ✔ Intermittent loss of communication with the scan tool.
Your Straightforward 30-Minute Installation Guide
You don’t need to be a professional mechanic to install this part. For the Chevy Uplander, the TCM is conveniently located and the process is simple.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and to help reset the vehicle’s computer systems.
- Locate the TCM: On the 2006-2009 Uplander, you’ll find the Transmission Control Module mounted to the driver’s side strut tower in the engine compartment. It’s a silver box with electrical connectors.
- Disconnect and Remove: Carefully unplug the electrical harnesses from the old module. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed TCM into place and securely reconnect the electrical harnesses. Ensure they click into place.
- Final Steps: Reconnect the negative battery terminal. While the module is plug-and-play, it’s always best practice to use a basic OBD2 scan tool to clear any stored trouble codes from the system. Start the vehicle and enjoy restored performance!
Verified Fitment Across the GM Family
While this is the perfect fix for a 2006-2009 Uplander TCM, this versatile T42 module is also a direct replacement for a wide range of other General Motors vehicles. Please verify your part number (24243901 or an interchangeable number) and vehicle model below.
- Chevrolet: Uplander (06-09), Cobalt (06-10), HHR (06-11), Impala (06-11), Monte Carlo (06-07), Malibu (06-10), Silverado, Tahoe, Express Van & more.
- Pontiac: G6 (06-10), Grand Prix (06-08), G5 (07-10), Montana (06-09), Pursuit (06).
- Buick: LaCrosse (06-09), Lucerne (06-11), Allure (06-09), Rendezvous (06-07), Rainier (06-07).
- GMC: Sierra, Yukon, Savana Van, Envoy (06-09), Canyon (08-12).
- Saturn: Vue (07-10), Aura (07-09), Ion (06-07).
- Cadillac: DTS (06-11).
- And more: Hummer H3 (08-10), Saab 9-7X (06-09).
Frequently Asked Questions
Do I need to take this part to a dealer for programming?
No. This is the biggest benefit of our service. We program the module to your vehicle’s VIN before shipping, so it’s ready for immediate installation. This saves you hundreds of dollars and significant time.
Where is the TCM located on my 2007 Uplander?
On the 2006-2009 Chevrolet Uplander, the TCM is located on the driver’s side strut tower in the engine bay. It’s easily accessible for a quick replacement.
Will this fix a P0700 code?
Yes, in most cases. A P0700 code indicates a general fault in the transmission control system. When this code is accompanied by other solenoid or communication codes, a failing TCM is the most common cause. Replacing it with this programmed unit typically resolves these issues.
Is there a core charge for my old part?
No, there is no core charge. You are not required to send your old, faulty module back to us, making the process simpler and faster for you.
What if I order the wrong part?
We strongly recommend verifying your part number and vehicle compatibility before ordering. If you are unsure, please contact our expert support team with your VIN, and we will be happy to confirm the correct fitment for your vehicle.