Is Your Chevrolet Uplander Shifting Erratically?
If you’re dealing with harsh shifting, delayed gear engagement, or a check engine light that points to transmission trouble, you’re not alone. The Transmission Control Module (TCM) in your 2006-2009 Chevrolet Uplander is the brain of your automatic transmission. When it begins to fail, it can cause a host of frustrating and potentially damaging drivability issues. From getting stuck in ‘limp mode’ to unpredictable gear changes, a faulty TCM can make your daily drive a nightmare. This T42 Transmission Control Module, service number 24252114, is the definitive solution to restore your vehicle’s performance and peace of mind.
The Plug-and-Play Solution: VIN Programmed for Your Vehicle
One of the biggest hurdles in replacing modern automotive electronics is the need for expensive dealership programming. We eliminate that step entirely. Before this module ships, we program it directly to your vehicle’s unique Vehicle Identification Number (VIN). This ensures that it communicates flawlessly with your Uplander’s engine control unit (ECU) and other systems right out of the box. No extra tools, no trips to the dealer, just a straightforward installation that gets you back on the road faster. This pre-programming addresses common diagnostic trouble codes (DTCs) like P0700 and various solenoid codes from the start.
From the Diagnostic Bay
We had a 2008 Chevy Express van come into the shop with classic symptoms of a failed transmission—slipping between gears and a P0700 code. The owner had already spent a small fortune having a transmission shop replace two solenoids, but the problem persisted. After a quick diagnostic, we identified the root cause: the T42 TCM itself was sending faulty signals. Instead of a costly transmission rebuild, the fix was this exact VIN-programmed module. Within an hour, the van was shifting like new, and the customer was relieved to have avoided a multi-thousand-dollar repair bill. It’s a powerful reminder to always check the electronics before condemning the hard parts.
Symptoms of a Failing 2006-2009 Uplander Transmission Module
A failing TCM can manifest in several ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement. Ignoring these signs can lead to further damage to your transmission’s mechanical components.
- ✔ Harsh, jerky, or unpredictable gear shifts.
- ✔ The vehicle gets stuck in a single gear (limp mode), often 2nd or 3rd.
- ✔ Illumination of the Check Engine Light or Transmission Warning Light.
- ✔ Diagnostic codes such as P0700, P0750, P0753, P0758, or other solenoid-related faults.
- ✔ Failure to shift up or down, or significant delays in engagement from Park to Drive or Reverse.
- ✔ A noticeable decrease in fuel economy due to inefficient shifting.
- ✔ In severe cases, a complete loss of transmission function.
Broad Compatibility Beyond the Uplander
While this is a perfect fit for the 2006-2009 Uplander, the GM T42 TCM was used across a massive range of vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. This module is also a direct replacement for countless popular models, including the Chevrolet Silverado, Tahoe, Impala, and Cobalt; GMC Sierra and Yukon; Buick LaCrosse; Pontiac G6; and many more. It interchanges with a long list of part numbers, including 24234503, 24230461, and 24256960, making it a versatile and reliable solution for a wide array of GM cars, trucks, and SUVs.
Installation and Warranty
Installation is simple for a DIY mechanic or any professional technician. The module is typically located in the engine compartment—often on the LH strut tower in the Uplander—and can be swapped in under 30 minutes. Simply disconnect the battery, unplug the electrical connectors from the old module, unbolt it, and install the new one in its place. Once the new module is connected and the battery is reconnected, the vehicle is ready to go. We stand behind our quality with a one-year warranty, giving you confidence in your repair.
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. We pre-program this module to your vehicle’s VIN before shipping. It arrives ready for a plug-and-play installation, saving you time and money on dealership programming fees.
Where is the TCM located on my 2007 Chevy Uplander?
On the 2006-2009 Chevrolet Uplander, the Transmission Control Module (TCM) is typically found in the engine bay, mounted to the driver’s side (LH) strut tower.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause of a P0700 code (such as internal TCM failure), you should always diagnose any other related codes to ensure there are no issues with wiring or sensors.
Is this a new or used part?
This is a high-quality, OEM-spec replacement part that has been expertly prepared and programmed to ensure it meets or exceeds original factory performance. It is backed by our one-year warranty.
What is a core charge? Do I need to send my old part back?
There is no core charge for this part. You can keep your old module, eliminating the hassle and expense of return shipping.