Restore Your Uplander’s Shifting Performance
Is your 2006-2009 Chevrolet Uplander suffering from harsh shifting, delayed gear engagement, or getting stuck in limp mode? These are classic signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating every gear change and ensuring smooth, efficient operation. When it begins to fail, it can cause a cascade of frustrating and potentially damaging issues. This replacement T42 TCM, part number 24235754, is the definitive solution to restore your vehicle’s factory performance and drivability.
From the Diagnostic Bay
We had a 2008 Uplander come into the shop with a persistent P0700 code and erratic shifting. The owner had already spent a small fortune replacing shift solenoids at another garage, but the problem remained. After a quick diagnostic, we identified the root cause: an internally failing TCM was sending faulty signals. Instead of another costly component replacement, we installed a VIN-programmed Uplander Transmission Module. The vehicle immediately shifted like new, the codes cleared, and the customer was back on the road, finally free of the issue. It’s a powerful reminder that diagnosing the core electronic component first can save time and money.
Signs Your Uplander Transmission Module is Failing
A faulty TCM can manifest in various ways, often mimicking mechanical transmission failure. Before considering a costly transmission rebuild, check for these common electronic symptoms. Replacing a defective module can often resolve these issues completely.
- ✔ Erratic Shifting: Experiencing sudden, harsh, or delayed gear changes.
- ✔ Warning Lights: The Check Engine Light or a dedicated transmission warning light is illuminated on your dashboard.
- ✔ Limp Mode: Your vehicle refuses to shift out of a single gear (often 2nd or 3rd) to prevent further damage.
- ✔ Poor Fuel Economy: Inefficient shifting and torque converter lockup can lead to a noticeable drop in MPG.
- ✔ Diagnostic Trouble Codes (DTCs): Common codes like P0700, P0750, or other solenoid-related faults point directly to a TCM issue.
- ✔ No Communication: A scan tool may be unable to communicate with the transmission module, indicating a complete failure.
Plug-and-Play Solution with VIN Programming
The biggest hurdle in replacing modern vehicle electronics is the need for expensive dealership programming. We eliminate that step entirely. This module is pre-programmed to your Uplander’s specific Vehicle Identification Number (VIN) before it ships. This ensures that it communicates flawlessly with your vehicle’s other systems, like the Engine Control Module (ECM), right out of the box. Simply install the part, and you’re ready to go. This process loads the latest GM software updates, ensuring optimal performance and longevity.
This T42 TCM is a direct replacement for a wide range of GM vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. It is an exact match for service numbers 24242391, 24234503, 24252114, and many others, making it a versatile and reliable choice for your repair.
Frequently Asked Questions
Do I need to program this Uplander Transmission Module?
No. This module comes pre-programmed to your vehicle’s VIN. During checkout, you will provide your VIN, and we will flash the unit with the correct software for your specific 2006-2009 Uplander. This makes installation a simple plug-and-play process without needing a trip to the dealer.
Where is the TCM located on a Chevy Uplander?
On the 2006-2009 Chevrolet Uplander, the transmission control module is typically located in the engine compartment, mounted to the driver’s side (LH) strut tower. Always disconnect the battery before beginning the replacement process.
Will this part fix a P0700 diagnostic code?
A P0700 code is a general fault code indicating the TCM has detected a problem and has requested the check engine light to be turned on. While this module can resolve the underlying cause of a P0700, it’s essential to have the transmission scanned for more specific codes (e.g., solenoid circuit faults) to confirm the TCM is the culprit.
Is this a new or used part?
This is a high-quality, OEM-standard replacement part that has been thoroughly inspected and prepared to meet or exceed original factory specifications. It is backed by our one-year warranty for your peace of mind.
What happens if I don’t replace a failing TCM?
Continuing to drive with a faulty TCM can lead to more severe mechanical damage to your transmission. Poor shifting can cause excessive wear on clutches and bands, and incorrect fluid pressure can lead to overheating, potentially resulting in a complete transmission failure requiring a much more expensive repair.