If you’re dealing with the all-too-common shifting headaches in your 2006-2009 Chevrolet Uplander—like harsh gear changes, getting stuck in limp mode, or a persistent check engine light—you’ve come to the right place. As a technician with over two decades of experience, I’ve seen countless drivers worry they need a full transmission rebuild when the real culprit is a faulty Transmission Control Module (TCM). This VIN-programmed T42 TCM, part number 24235753, is the direct, reliable solution to restore your minivan’s performance and get your family back on the road safely.
This isn’t just a replacement part; it’s a permanent fix. We pre-program this module to your Uplander’s specific Vehicle Identification Number (VIN) before it ships. This critical step ensures it communicates flawlessly with your vehicle’s engine computer and other systems right out of the box. You get to skip the expensive and time-consuming trip to the dealership for programming. For the DIY mechanic, this means a straightforward, plug-and-play repair you can complete in your own driveway. For the professional shop, it means a faster, more profitable job and a happier customer. This 2006-2009 Uplander TCM is the brain behind your transmission’s operation, controlling everything from shift points to torque converter lockup, ensuring every gear change is smooth and efficient.
Case Study: The Uplander That Wouldn’t Shift
A customer brought in a 2008 Uplander with classic signs of transmission failure: it was banging into gear and sometimes wouldn’t shift past 2nd. They were quoted over $3,000 for a transmission rebuild at another shop. After plugging in my scan tool, I saw a P0700 code and a few solenoid circuit faults. Instead of tearing down the transmission, I checked the TCM first. These T42 modules are known to fail internally, causing erratic signals. We installed a VIN-programmed module, and in under an hour, the van was shifting perfectly. It was a $2,500+ save for the customer, all because we diagnosed the electronics first. This is why I trust these programmed modules for a confident repair.
Is Your Uplander Showing These Transmission Troubles?
- ✔ Harsh, slamming shifts or delayed gear engagement.
- ✔ Vehicle is stuck in one gear (often called ‘limp mode’).
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) are present, such as the general P0700 or specific solenoid codes (e.g., P0750, P0751, P0752).
- ✔ Poor acceleration and a noticeable drop in fuel economy.
- ✔ The transmission seems to slip between gears or refuses to downshift.
A Straightforward Guide to DIY Installation
Replacing the 2006-2009 Uplander TCM is a job most home mechanics can handle in under 30 minutes. On the Uplander, it’s conveniently located and easy to access.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: On the 2006-2009 Uplander, the TCM is typically found mounted to the LH (driver’s side) strut tower in the engine bay.
- Disconnect and Remove: Carefully unplug the electrical connectors. Press the release tabs firmly to avoid breaking them. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical harnesses. You should hear a ‘click’ as they lock in.
- Final Steps: Reconnect the battery terminal. Start the vehicle and let it run for a few minutes. While our programming handles the heavy lifting, it’s good practice to use a basic scan tool to clear any old stored codes from the vehicle’s memory.
Verified Vehicle Compatibility
This T42 TCM (interchange part numbers include 24242391, 24234503, 24252114, and more) is engineered to be a direct-fit replacement for a wide range of General Motors vehicles. While this listing is focused on the 2006-2009 Uplander TCM, it is also compatible with models like:
- Chevrolet Cobalt, HHR, Impala, Malibu, Monte Carlo
- Pontiac G5, G6, Grand Prix
- Saturn Aura, Ion, Vue
- Buick Allure, LaCrosse, Lucerne, Rendezvous
- And many other GM cars, trucks, and SUVs from this era. Please verify your part number or contact us to confirm fitment.
What exactly does ‘VIN Programmed’ mean for me?
What exactly does ‘VIN Programmed’ mean for me?
It means we load your vehicle’s unique 17-digit VIN and the latest GM software onto the module before we ship it. This ensures it works perfectly with your Uplander’s specific systems the moment you install it, eliminating the need for expensive dealership programming tools.
Is this installation difficult for a beginner?
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. With basic hand tools and our guide, most people can complete the swap in under 30 minutes. It’s a great DIY-friendly repair.
Will this part fix a P0700 transmission code?
Yes, in many cases. The P0700 code is a general fault code indicating the TCM has detected a problem. If the TCM itself is the source of the electrical fault, replacing it with our programmed unit will resolve the issue and allow the code to be cleared.
Do I need to send my old TCM back?
No, there is no core charge or need to return your old part. This simplifies the process for you—just install the new module and you’re done.