If your 2006-2009 Chevrolet Uplander is suffering from erratic shifting, getting stuck in gear, or throwing transmission-related check engine lights, you’ve come to the right place. As a technician with over two decades of experience under the hood, I’ve seen countless families frustrated by an unreliable minivan. A faulty Transmission Control Module (TCM) is often the culprit, turning a dependable family vehicle into a source of stress. This T42 TCM, part number 24235754, is the definitive, hassle-free solution to restore your vehicle’s performance and your peace of mind.
The biggest hurdle in replacing a TCM has always been the expensive and time-consuming trip to the dealership for programming. We eliminate that step entirely. By providing your vehicle’s VIN during checkout, we program the module specifically for your Uplander. It arrives at your door ready for a true plug-and-play installation, loaded with the latest GM software updates. This ensures perfect communication between your engine and transmission for optimal shift points, fuel economy, and long-term reliability.
From the Diagnostic Bay: The Intermittent Shifting Mystery
A customer brought in their 2008 Uplander with a complaint that stumped two other shops: intermittent, bone-jarring shifts and occasional failure to shift out of 2nd gear. There were no consistent trouble codes, just a generic P0700 (Transmission Control System Malfunction) that would pop up and disappear. We suspected the TCM, as heat soak in the engine bay can cause these T42 modules to develop internal connection failures. After swapping in a new, pre-programmed module, the problem vanished instantly. The original TCM’s internal processor was failing under thermal load, a classic issue this replacement part is designed to solve for good.
Is Your Uplander Showing These Telltale Signs?
A failing TCM doesn’t always mean a complete transmission failure. Catching it early can save you from more expensive repairs down the road. Look out for these common symptoms:
- âś” Harsh, slamming shifts or delayed gear engagement.
- âś” The vehicle is stuck in “limp mode” (usually 2nd or 3rd gear).
- âś” Check Engine Light or Transmission Warning Light is illuminated.
- âś” Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related faults are present.
- âś” Inability to upshift or downshift properly, leading to poor acceleration.
- âś” A noticeable drop in fuel efficiency.
- âś” The transmission feels like it’s slipping between gears.
Your 30-Minute Path to a Smooth Ride
You don’t need to be a professional mechanic to install this part. The process is straightforward and can be completed in your driveway with basic hand tools. For the 2006-2009 Uplander, the TCM is conveniently located and easy to access.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and to help reset the system.
- Locate the Module: On your Uplander, the TCM is typically found bolted to the driver’s side strut tower in the engine compartment.
- Disconnect and Remove: Carefully unplug the electrical connectors. Note their orientation. Then, unbolt the old module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place. Reconnect the electrical connectors securely.
- Final Steps: Reconnect the battery terminal. While our programming handles the critical setup, it’s good practice to use a basic OBD2 scan tool to clear any stored fault codes from the vehicle’s memory. Start the vehicle and enjoy smooth, reliable shifting!
Why This 2006-2009 Uplander Transmission Module is the Smart Choice
This isn’t just a replacement part; it’s a complete, long-term fix designed for reliability and ease of use. It correctly manages all critical transmission functions, including shift solenoid operation, torque converter clutch lockup, and line pressure, restoring the performance your vehicle had when it was new.
Verified Fitment for Your Vehicle
This module is a direct-fit replacement for the 2006-2009 Chevrolet Uplander and is also compatible with a wide range of other GM vehicles that use the T42-style TCM. It is a direct replacement for part numbers including 24235754, 24252114, 24234503, and others listed in our interchange data. Below is a partial list of compatible models:
This part will fit these makes and models with these options:
UPLANDER 06-09 Transmission; (LH strut tower)
ALLURE 06-09 Transmission; (lower air cleaner housing)
AVALANCHE 1500 07-08 Transmission; (next to battery)
COBALT 06-10 Transmission; (LH strut tower)
COLORADO 08-12 Transmission; (RH rear engine compartment)
EXPRESS VANS 06-14 Transmission; (RH engine compartment)
G6 06-10 Transmission; (LH strut tower)
HHR 06-11 Transmission; (LH engine compartment)
IMPALA 06-11 Transmission; (lower air cleaner housing)
LACROSSE 06-09 Transmission; (lower air cleaner housing)
MALIBU 06-10 Transmission; (LH frame rail)
MONTANA 06-09 Transmission; (LH strut tower)
SIERRA & SILVERADO TRUCKS 07-13 Transmission; (next to battery)
TAHOE & YUKON 07-09 Transmission; (next to battery)
…and many more. Please verify your part number or contact us with your VIN to confirm compatibility.
Frequently Asked Questions
Do I need to take my van to the dealer after installation?
No. This module comes fully programmed to your vehicle’s VIN. The installation is plug-and-play, and no further programming or relearning procedures are required at a dealership, saving you time and money.
What is a TCM and what does it do?
The Transmission Control Module (TCM) is a computer that acts as the ‘brain’ of your automatic transmission. It collects data from various sensors and uses it to control shift timing, line pressure, and torque converter lockup for smooth and efficient operation.
Is this a difficult part for a DIYer to replace?
Not at all. For the Uplander, the TCM is located on the driver’s side strut tower, making it one of the easier modules to access and replace. With basic tools, most DIY enthusiasts can complete the job in under 30 minutes.
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 (like internal failure), it’s important to ensure there are no other issues, such as faulty wiring or solenoids. However, if you’re experiencing common symptoms like harsh shifting along with the P0700, a failing TCM is the most likely cause.
What if I order the wrong part?
We’re here to help! We strongly recommend providing your VIN at checkout to guarantee compatibility. If you have any doubts, please contact our expert support team before ordering, and we’ll ensure you get the correct 2006-2009 Uplander Transmission Module for your vehicle.