Restore Peak Transmission Performance in Your Chevrolet Uplander
Is your 2006-2009 Chevrolet Uplander suffering from erratic shifting, getting stuck in gear, or displaying a check engine light? These are classic signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating smooth gear changes, managing torque converter lockup, and ensuring overall drivetrain efficiency. When it fails, it can lead to frustrating and potentially damaging driving conditions. This genuine OEM-quality T42 TCM, service number 24239926, is the definitive solution to restore your vehicle’s factory performance and reliability.
Expert Pro Tip
Before installing your new TCM, always disconnect the vehicle’s battery for at least 15 minutes. This not only ensures your safety but also helps reset the vehicle’s onboard computer systems, allowing them to properly recognize the new, VIN-programmed module upon reconnection. After installation, use a quality OBD2 scan tool to clear any stored transmission codes for a clean slate.
Diagnosing Your 2006-2009 Uplander TCM
A faulty transmission module can manifest in various ways, often mimicking mechanical transmission problems. Understanding these symptoms can save you time and money on diagnostics. If your Uplander exhibits any of the following behaviors, a failing TCM is the most likely culprit. This module is engineered to resolve these exact issues, providing a direct and effective repair.
Common Symptoms of a Failing T42 TCM
- ✔ Harsh or delayed gear engagement, causing clunking or jerking.
- ✔ Inability to shift up or down, or getting stuck in a single gear (limp mode).
- ✔ Illumination of the Check Engine Light or Transmission Warning Light.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults.
- ✔ A noticeable decrease in fuel economy due to inefficient shifting.
- ✔ The transmission slipping out of gear unexpectedly.
- ✔ Complete failure to engage any gear (no forward or reverse).
The Power of VIN Programming: A Plug-and-Play Solution
What sets this module apart is our professional VIN programming service. We flash the unit with your Uplander’s specific Vehicle Identification Number and the latest GM software updates before it ships. This critical step ensures the TCM communicates flawlessly with your vehicle’s Engine Control Unit (ECU) and other onboard systems. You get a true plug-and-play part that requires no expensive trips to the dealership for additional programming. It arrives ready to install, calibrated for the exact shift points and transmission strategy your vehicle was designed for.
Installation and Compatibility
For the 2006-2009 Chevrolet Uplander, the TCM is conveniently located at the driver’s side (LH) strut tower in the engine compartment, making for a straightforward installation that can typically be completed in under 30 minutes with basic hand tools. This T42 module is also a direct replacement for a wide array of GM vehicles from 2006-2014 equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. It is interchangeable with numerous part numbers, including 24252114, 24234503, 24230461, 24239224, and more, ensuring broad compatibility for your repair needs.
Frequently Asked Questions
Do I need to program this module after I receive it?
No. This Transmission Control Module is pre-programmed to your vehicle’s specific VIN before shipping. This makes it a true plug-and-play solution, eliminating the need for any additional programming or costly visits to a dealership.
What are the most common signs my Uplander’s TCM is failing?
The most common symptoms include harsh or erratic shifting, the vehicle being stuck in “limp mode” (usually 2nd or 3rd gear), a check engine light with transmission-related codes (like P0700), and delayed engagement when shifting from Park to Drive or Reverse.
Where is the TCM located on a 2006-2009 Chevrolet Uplander?
On the 2006-2009 Uplander, the TCM is found in the engine compartment, mounted to the driver’s side (LH) strut tower. Its location makes it relatively easy to access for replacement.
Will replacing the TCM fix a P0700 diagnostic trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem and has requested the check engine light be turned on. While a faulty TCM can cause this code, it’s often accompanied by other, more specific codes. Replacing a faulty TCM is a common and effective way to resolve a P0700 and its associated codes.
Is there a core charge for my old part?
No, there is no core charge associated with this part. You can keep your old module without any hassle or need to return it, simplifying the repair process for you.