Restore Flawless Shifting to 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 falters, your vehicle’s performance and reliability are compromised. This OEM-quality T42 TCM, service part number 24235753, is the definitive solution to restore your vehicle’s transmission to its factory-spec operation.
From the Diagnostic Bay
We recently had a 2008 Chevy Uplander towed in. The owner was frustrated because it was stuck in ‘limp mode’—it wouldn’t shift past 3rd gear, making highway driving impossible. The dashboard was lit up with a check engine light, and a quick scan revealed a P0700 code, which is a general transmission fault request. After ruling out solenoid or wiring issues, we identified a faulty TCM. Instead of a costly trip to the dealer for a new module and programming, we installed one of our VIN-programmed T42 units. In under an hour, the codes were cleared, the vehicle was shifting perfectly through all gears, and the customer drove away with a reliable van, saving hundreds of dollars and significant downtime.
Symptoms of a Failing GM T42 TCM
A failing TCM can manifest in various ways, often starting as intermittent issues before becoming a constant problem. If you’re noticing any of the following, it’s time to inspect your transmission control module:
- ✔ Harsh, delayed, or unpredictable gear shifts.
- ✔ The vehicle feels like it’s slipping out of gear.
- ✔ Inability to upshift or downshift, or getting stuck in a single gear (limp mode).
- ✔ Illuminated Check Engine Light or Transmission Warning Light on your dash.
- ✔ Diagnostic Trouble Codes (DTCs) such as P0700, P0750, or other solenoid-related faults.
- ✔ A noticeable decrease in fuel economy.
- ✔ The transmission seems to overheat more easily than usual.
Why Choose Our Programmed 2006-2009 Uplander Transmission Control Module?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. The most critical aspect of replacing a modern TCM is programming. Our modules eliminate that hurdle. We pre-program each unit to your vehicle’s specific Vehicle Identification Number (VIN) before it ships. This ensures 100% compatibility with your vehicle’s systems, using the latest software updates from General Motors. You get a plug-and-play part that requires no expensive dealership visits for flashing or setup. This direct-fit Uplander Transmission Control Module is engineered to meet or exceed original equipment standards for durability and performance, backed by our one-year warranty.
Key Features & Benefits
- Plug & Play Installation: Arrives pre-programmed to your VIN. Simply install the module, connect the harnesses, and you’re ready to go.
- Restored Performance: Cures common shifting problems, eliminates related trouble codes, and restores the smooth, efficient operation you expect.
- Broad GM Compatibility: While perfect for the 2006-2009 Uplander, this T42 TCM is also a direct replacement for dozens of other GM vehicles, including the Silverado, Tahoe, Impala, Sierra, and Yukon. It interchanges with part numbers 24252114, 24234503, 24242391, and more.
- No Core Charge: Keep your old part. We don’t require a core return, saving you the time, hassle, and expense of shipping your old module back.
Simple Installation Process
Replacing the TCM on a 2006-2009 Uplander is a straightforward job that can be done with basic hand tools. The module is typically located on the driver’s side of the engine bay, mounted to the LH strut tower. Always disconnect the negative battery terminal before beginning work to prevent electrical damage and help reset the vehicle’s computer systems. After installing the new module and reconnecting the battery, use a standard OBD2 scan tool to clear any stored diagnostic trouble codes. The entire process can often be completed in less than 30 minutes.
Frequently Asked Questions
Do I need to have this TCM programmed by a dealer?
No. We handle all the programming for you. Simply provide your vehicle’s VIN during checkout, and the module will arrive at your door fully programmed and ready for immediate installation.
Where is the TCM located on my 2007 Uplander?
On the 2006-2009 Chevrolet Uplander, the Transmission Control Module is typically found in the engine compartment, attached to the driver’s side (LH) strut tower.
Will this part fix a P0700 diagnostic code?
A P0700 code is a general fault code indicating that the TCM has detected a problem and has requested the check engine light be turned on. While a faulty TCM is a very common cause for this code, it’s essential to ensure other components like solenoids and wiring are functioning correctly. In many cases, replacing a failed TCM will resolve the P0700 code and related specific transmission codes.
Is this compatible with other GM vehicles?
Yes, this T42 TCM is compatible with a wide range of 2006-2014 GM cars, trucks, and SUVs equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. This includes popular models like the Chevrolet Silverado, Tahoe, Impala, GMC Sierra, Buick LaCrosse, and more.
What if I have a different part number on my old module?
This module replaces numerous GM service numbers. Please check the interchange list in our description, which includes common numbers like 24252114, 24234503, and 24242391. If your number is on the list, this part is a direct replacement.