Is Your 2006-2009 Chevrolet Uplander Experiencing Transmission Problems?
If your family’s Uplander is suddenly shifting harshly, getting stuck in gear, or showing a check engine light, a failing Transmission Control Module (TCM) is the most likely culprit. As the electronic brain of your automatic transmission, the TCM is responsible for every gear change. When it fails, it can make your vehicle feel unpredictable and unsafe. This isn’t just an inconvenience; it’s a critical component for your van’s performance and your peace of mind on the road.
From the Diagnostic Bay: The Misdiagnosed Minivan
A customer brought in their 2008 Uplander with classic transmission failure symptoms: it wouldn’t shift past 2nd gear (limp mode) and had a P0700 code stored. Another shop had quoted them over two thousand dollars for a transmission rebuild. In my experience, especially with these GM platforms, the issue is rarely a catastrophic mechanical failure. More often than not, it’s the T42 TCM. After a quick 10-minute diagnostic check confirming the module was unresponsive, we installed one of our VIN-programmed units. The van was shifting perfectly within the hour, saving the customer a massive headache and a huge repair bill. This is a fix you can confidently do yourself.
The Permanent Solution: A Plug-and-Play 2006-2009 Uplander TCM
Don’t let a faulty module sideline your vehicle. This OEM-quality T42 Transmission Control Module, interchangeable with part number 24230461, is the definitive fix for these common issues. We take the guesswork and extra cost out of the repair by pre-programming the module to your Uplander’s specific Vehicle Identification Number (VIN). This means it arrives ready for installation right out of the box—no expensive trip to the dealership for programming is required. It’s designed to restore the precise, smooth shifting you expect from your vehicle.
Common Signs of a Failing Uplander TCM
- âś” Harsh, erratic, or delayed gear shifts.
- âś” Vehicle is stuck in “limp mode” and won’t shift out of 2nd or 3rd gear.
- âś” Check Engine Light or Transmission Warning Light is on.
- âś” Diagnostic Trouble Codes (DTCs) are present, especially P0700 (Transmission Control System Malfunction) or various solenoid codes (e.g., P0751, P0756).
- âś” A sudden drop in fuel economy.
- âś” The transmission feels like it’s slipping between gears.
- âś” Complete loss of communication with the module, leading to a no-shift condition.
DIY Installation in Under 30 Minutes
Replacing the TCM on your Uplander is a straightforward job that most DIYers can handle with basic tools. For the 2006-2009 Uplander, the module is conveniently located on the driver’s side of the engine bay, mounted to the strut tower.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: Find the TCM on the driver’s side (LH) strut tower in the engine compartment.
- Disconnect and Remove: Carefully unplug the electrical connectors. Be gentle with the locking 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.
- Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s good practice to use a basic OBD2 scanner to clear any old fault codes from the vehicle’s memory.
Verified Vehicle Compatibility
This module is a guaranteed fit for the following vehicles, specifically programmed for your VIN:
- Chevrolet Uplander: 2006, 2007, 2008, 2009 (Transmission Control Module located at LH strut tower)
It is also a direct replacement for a wide range of other GM vehicles from 2006-2014, including models like the Impala, Silverado, Tahoe, GMC Sierra, Buick LaCrosse, and more that use the T42 TCM. It is interchangeable with part numbers 24230461, 24252114, 24234503, and others listed in the fitment data.
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. This is the biggest benefit we offer. We pre-program the module to your vehicle’s VIN before shipping, so it’s ready for immediate installation without any additional dealer tools or fees.
Is this part difficult to install on my Uplander?
Not at all. For the 2006-2009 Uplander, the TCM is located on the driver’s side strut tower, making it easily accessible. With basic hand tools, most people can complete the job in under 30 minutes.
How do I provide my VIN for programming?
You will be prompted to enter your vehicle’s 17-digit VIN during the checkout process. Please double-check it for accuracy to ensure perfect programming.
What happens if I continue driving with a bad TCM?
Continuing to drive can lead to worsening shift quality, poor fuel mileage, and increased stress on your transmission’s mechanical parts. In some cases, it can leave you stranded if the vehicle gets permanently stuck in limp mode or refuses to shift at all.
Is there a core charge for my old part?
No, we do not require a core return. You can keep your old part, which simplifies the process for you.
Does this part come with a warranty?
Yes, this module is backed by our one-year warranty, giving you confidence in the quality and reliability of your repair.