Restore Peak Performance to Your Chevrolet Uplander
Is your 2006, 2007, 2008, or 2009 Chevrolet Uplander suffering from erratic 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 shift points, managing torque converter lockup, and monitoring system health. When it fails, it can cause a cascade of frustrating and potentially damaging issues. This genuine OEM-quality T42 TCM, service part number 24234274, is the definitive solution to restore your vehicle’s smooth, reliable operation.
From the Diagnostic Bay
We had a 2008 Chevy Montana (which shares a platform with the Uplander) come into the shop with a complaint of harsh, unpredictable shifting and the check engine light on. The owner had already replaced a shift solenoid based on a generic code, but the problem persisted. Scanning the vehicle revealed a P0700 (Transmission Control System Malfunction) code, but the specific solenoid codes were intermittent. Instead of throwing more parts at it, we inspected the TCM. We noticed that the issues were worse after the van had been running for 20 minutes, a common sign of heat-related failure in these modules. Installing a VIN-programmed 2006-2009 Uplander TCM solved all the issues instantly. The van shifted like new, and all transmission-related codes were gone for good. It’s a reminder that sometimes the root cause is the controller, not the components it’s controlling.
The Importance of a Programmed 2006-2009 Uplander TCM
Unlike a simple sensor, a modern TCM is a complex computer that must be perfectly synced with your vehicle’s specific configuration. Our modules eliminate the guesswork and costly trips to the dealership. We pre-program each unit to your vehicle’s unique Vehicle Identification Number (VIN) before it ships. This process loads the latest GM software and ensures that the module communicates flawlessly with your Uplander’s engine computer and other systems right out of the box. This plug-and-play solution means no additional programming or setup is required, making the installation straightforward for both professional technicians and savvy DIYers.
Symptoms of a Failing Uplander Transmission Module
- ✔ Harsh or slamming shifts between gears.
- ✔ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔ Vehicle stuck in a single gear (limp mode), often 2nd or 3rd.
- ✔ Illumination of the Check Engine Light or Transmission Warning Light.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-specific codes.
- ✔ Failure to upshift or downshift correctly, leading to poor acceleration.
- ✔ A noticeable decrease in fuel economy.
- ✔ Complete loss of transmission function in severe cases.
Installation and Compatibility
Replacing the TCM on your Chevrolet Uplander is a manageable job. The module is typically located on the driver’s side of the engine bay, mounted to the LH strut tower. The process generally involves disconnecting the battery, unplugging the electrical connectors from the old module, unbolting it, and installing the new one in its place. Once the new, pre-programmed module is connected and the battery is reconnected, the vehicle is ready to go. While many codes will clear automatically, it’s always best practice to use a scan tool to clear any remaining DTCs from the system. This module is a direct replacement for a wide range of GM part numbers, including 24242391, 24234503, 24252114, and many others, ensuring broad compatibility across numerous GM vans, cars, and SUVs from the era.
Frequently Asked Questions
Do I need to have this TCM programmed by a dealer?
No. This module comes pre-programmed to your vehicle’s specific VIN. Simply provide your VIN during checkout, and we will flash the unit with the correct software before shipping. It will be ready for plug-and-play installation upon arrival.
Where is the TCM located on my 2007 Chevrolet Uplander?
On the 2006-2009 Chevrolet Uplander and its platform mates (like the Pontiac Montana SV6 and Saturn Relay), the Transmission Control Module is located in the engine compartment, typically mounted on the driver’s side strut tower.
Will this part fix a P0700 trouble code?
A P0700 code is a general transmission fault code, indicating that the TCM has detected a problem. While a failing TCM is a very common cause of this code, it’s essential to have the vehicle scanned for more specific codes (like solenoid or sensor codes) to confirm the diagnosis. However, if you are experiencing erratic shifting along with a P0700, the TCM is a primary suspect.
Is this compatible with other GM vehicles?
Yes, this T42 TCM is compatible with a wide array of GM vehicles from roughly 2006-2014 that use 4-speed automatic transmissions like the 4L60E and 4L65E. This includes models like the Chevy Impala, GMC Sierra, Buick LaCrosse, and many others listed in the fitment data.
Is there a core charge for this part?
No, we do not require a core charge for this transmission control module. You can keep your old part without the hassle of returning it, saving you time and money.