Restore Your Uplander’s Shifting Performance
Is your 2006-2009 Chevrolet Uplander experiencing harsh shifting, getting stuck in gear, or showing 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 powertrain efficiency. When it fails, it can lead to frustrating and potentially damaging driving conditions. This genuine OEM-quality T42 TCM, part number 24243901, is the definitive solution to restore your vehicle’s factory performance.
Expert Pro Tip: Before installing your new TCM, disconnect the vehicle’s battery for at least 15 minutes. This helps reset the vehicle’s internal memory and ensures it properly recognizes the new, VIN-programmed module upon startup, preventing potential communication errors.
Symptoms of a Failing 2006-2009 Uplander TCM
A faulty TCM can manifest in various ways, affecting both drivability and safety. If you’re noticing any of the following issues, it’s highly likely your transmission module needs replacement. Ignoring these signs can lead to more severe transmission damage over time.
- ✔️ Harsh, delayed, or erratic gear shifts that feel like the transmission is slamming into gear.
- ✔️ The vehicle enters “limp mode,” often getting stuck in 2nd or 3rd gear to protect the transmission.
- ✔️ An illuminated Check Engine Light or Transmission Warning Light on your dashboard.
- ✔️ Diagnostic Trouble Codes (DTCs) such as P0700, which indicates a general transmission fault, or specific solenoid codes.
- ✔️ Failure to upshift or downshift, resulting in poor acceleration and decreased fuel economy.
- ✔️ Complete loss of communication with the module, leading to a no-start or no-shift condition.
The Plug-and-Play Advantage: VIN Programming Included
The biggest hurdle in replacing a modern TCM is the need for expensive and time-consuming dealership programming. We eliminate that step entirely. Each module is expertly programmed to your Uplander’s specific Vehicle Identification Number (VIN) before it ships. This ensures 100% compatibility with your vehicle’s systems right out of the box. The module arrives loaded with the latest GM software updates, resolving common factory issues and ensuring optimal communication between the engine and transmission. Simply install the part, reconnect your battery, and drive away—no extra tools or appointments required.
Broad GM Compatibility
While this is the perfect solution for your Uplander, the versatile T42 TCM is also a direct replacement for a wide range of other General Motors vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. It interchanges with numerous part numbers, including 24252114, 24234503, 24230461, and 24243901, making it a reliable choice for models like the Chevrolet Silverado, GMC Sierra, Buick LaCrosse, and many more.
Frequently Asked Questions
What is VIN programming and why is it necessary?
VIN programming loads your vehicle’s specific software and calibration files onto the TCM. This is critical for the module to communicate correctly with your engine, anti-lock brakes, and other vehicle systems. Our pre-programming service makes the part plug-and-play, saving you a trip to the dealer.
Where is the TCM located on a 2006-2009 Chevrolet Uplander?
On the Chevrolet Uplander and similar GM minivans like the Pontiac Montana and Saturn Relay, the T42 TCM is typically located on the driver’s side of the engine compartment, mounted to the LH strut tower for easy access.
Do I need to return my old TCM?
No, there is no core charge for this part. You can keep, discard, or recycle your old module without any obligation to send it back to us, making the process faster and more convenient for you.
Will this module fix a P0700 trouble code?
Yes, a P0700 code is a general fault code requested by the TCM. If the underlying cause is a faulty module, replacing it with this pre-programmed unit will resolve the code and the associated specific transmission codes (like solenoid faults) that are often present alongside it.
Is any special tool required for installation?
No special tools are required. Basic hand tools, such as a socket set to remove the mounting bolts and disconnect the battery, are all that is needed. The installation process typically takes less than 30 minutes.