Restore Dependable Performance to Your Uplander’s Transmission
If your 2006-2009 Chevrolet Uplander is suffering from erratic shifting, getting stuck in gear, or has an illuminated check engine light, a failing Transmission Control Module (TCM) is often the culprit. As a seasoned technician, I’ve seen countless family vehicles like the Uplander sidelined by these exact issues. The TCM, specifically the GM T42 module, is the electronic brain of your automatic transmission. It dictates every gear change and ensures smooth, efficient operation. When it fails, it can make your reliable minivan feel unpredictable and unsafe.
This isn’t just a replacement part; it’s a direct solution. We offer a high-quality T42 TCM, part number 24230461, that comes expertly pre-programmed to your Uplander’s specific Vehicle Identification Number (VIN). This critical step means you can skip the expensive and time-consuming trip to the dealership for programming. It arrives ready for a true plug-and-play installation, restoring the precise shifting logic your vehicle had from the factory. Get your family hauler back on the road with confidence.
Case Study: The Uplander That Avoided a Rebuild
A customer brought in their ’08 Uplander with classic transmission failure symptoms: harsh 1-2 shifts and occasionally getting stuck in 3rd gear (limp mode). Another shop had quoted them over $2,500 for a transmission rebuild. I hooked up my scan tool and pulled a P0700 (Transmission Control System Malfunction) and a few solenoid circuit codes. From experience, I know that multiple, intermittent solenoid codes on these GM 4-speeds often point to the controller, not the internal components. We swapped in a VIN-programmed T42 TCM, cleared the codes, and took it for a test drive. The shifting was perfect. The total repair cost was a fraction of the initial quote, and the customer was back on the road the same day. It’s a powerful reminder to always diagnose the electronics before condemning the hard parts.
Is Your Uplander’s Transmission Acting Up?
A faulty 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 problems.
- ✔ Harsh, slamming, or delayed gear shifts.
- ✔ Vehicle is stuck in one gear (often called “limp mode”).
- ✔ Check Engine Light or Transmission Warning Light is on.
- ✔ Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related faults are present.
- ✔ Poor acceleration and decreased fuel economy.
- ✔ Complete loss of communication with the transmission module.
A Straightforward Guide to Installation
For the handy DIYer or professional mechanic, replacing the 2006-2009 Uplander TCM is a simple job that typically takes less than 30 minutes. No specialized tools are required.
- 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 Module: On the 2006-2009 Uplander, the TCM is conveniently located on the driver’s side of the engine bay, mounted to the left-hand strut tower.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old TCM. Then, unbolt the module 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 standard OBD2 scan tool to clear any stored fault codes. Take the vehicle for a test drive to confirm smooth shifting.
Verified Vehicle Compatibility
This T42 Transmission Control Module is a direct-fit replacement for the following vehicles, specifically referencing part number 24230461 and its interchanges. While this page focuses on the Uplander, the module is compatible with a wide range of GM models.
- Chevrolet Uplander: 2006, 2007, 2008, 2009 (Transmission; LH strut tower)
- …and many other GM vehicles such as the Chevrolet Cobalt, HHR, Impala; Pontiac G6, Grand Prix; Buick Allure, LaCrosse; and Saturn Aura, Vue. Please verify the part number for your specific application.
Frequently Asked Questions
Do I need to do any programming after I install this part?
No. This module is delivered pre-programmed to your vehicle’s VIN. It is ready for installation right out of the box, saving you a trip to the dealer.
What is a T42 TCM?
The T42 is the specific hardware platform used by General Motors for the transmission control module in a wide range of vehicles from this era, including your 2006-2009 Uplander.
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, which simplifies the repair process for you.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While a faulty TCM itself can cause this code, it often appears alongside more specific codes (like for a shift solenoid). Replacing a bad TCM will resolve the P0700 and the related codes it was causing.
What if I install this and my problem doesn’t go away?
While this module fixes the most common transmission electronic issues, we understand that diagnostics can be complex. Our parts come with a one-year warranty and our expert support team is here to help you troubleshoot further if needed.