Is your 2006-2009 Chevrolet Uplander suffering from frustrating and unsafe transmission problems? If you’re dealing with harsh bangs into gear, getting stuck in limp mode, or seeing that dreaded check engine light, your Transmission Control Module (TCM) is the most likely culprit. As a technician with over two decades of experience, I’ve seen these T42 modules fail frequently, causing what seems like a major transmission failure when it’s often just a faulty electronic component.
Don’t let a dealership quote for hundreds in diagnostics and programming scare you. This is a direct-fit, OEM-quality replacement TCM, part number 24234274, that arrives at your door pre-programmed to your Uplander’s specific VIN. This means no extra tools, no software flashing, and no trip to the dealer. It’s a true plug-and-play solution designed to get your family’s minivan back on the road safely and smoothly.
Case Study: A Tricky Diagnosis
A customer brought in their ’08 Uplander with classic symptoms: it would shift hard from 1st to 2nd when cold and occasionally refuse to shift past 3rd gear on the highway. They were worried about a full transmission rebuild. I scanned the vehicle and found a generic P0700 code and a specific code for a shift solenoid circuit. While the solenoid itself was a possibility, my experience with these GM platforms pointed me to the TCM. The internal drivers for the solenoids often fail, creating intermittent electrical faults. We installed a VIN-programmed 2006-2009 Uplander TCM, cleared the codes, and the van drove perfectly. The customer saved over a thousand dollars compared to the transmission work they thought they needed.
Is Your Uplander Showing These Telltale Signs?
- ✔️ Harsh, jerky, or delayed gear shifts that make driving uncomfortable.
- ✔️ The vehicle is stuck in a single gear (often called “limp mode”) to protect the transmission.
- ✔️ Check Engine Light or Transmission Warning Light is illuminated on your dash.
- ✔️ Diagnostic Trouble Codes (DTCs) are present, such as the general P0700 (Transmission Control System Malfunction) or specific solenoid codes like P0751, P0752, P0756, etc.
- ✔️ A sudden drop in fuel economy as the transmission isn’t operating efficiently.
- ✔️ Complete loss of communication with the module, preventing the vehicle from starting or shifting out of park.
DIY-Friendly Installation: Get Your Minivan Running Smoothly in Under 30 Minutes
Replacing the 2006-2009 Uplander TCM is a straightforward job that most DIYers can handle with basic hand tools. You’ll save significantly on labor costs.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: On your 2006-2009 Uplander, the TCM is conveniently located on the driver’s side of the engine bay, mounted to the LH strut tower.
- 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 TCM: Bolt the new, pre-programmed module into place and securely reconnect the electrical harnesses. You should hear a ‘click’ as they lock in.
- Reconnect and Verify: Reconnect the battery terminal. Start the vehicle and check for smooth shifting and ensure no warning lights return. We recommend using a basic scan tool to clear any stored fault codes after installation.
Verified Fitment for Your Vehicle
This module is a guaranteed fit for your 2006, 2007, 2008, or 2009 Chevrolet Uplander. While this listing is specifically for the Uplander, this T42 TCM is also compatible with a wide range of other GM vehicles, making it one of the most common modules we supply. It directly interchanges with part numbers 24252114, 24234503, 24230461, 24235340, and more.
- Chevrolet Uplander (2006-2009) – Located at LH strut tower
- Chevrolet Cobalt / HHR / Impala / Monte Carlo
- Pontiac G5 / G6 / Grand Prix / Pursuit
- Buick Allure / LaCrosse / Lucerne / Rendezvous
- Saturn Aura / Ion / Vue
- And many other GM cars, trucks, and SUVs.
Frequently Asked Questions (FAQ)
Frequently Asked Questions
What exactly does a Transmission Control Module do?
The TCM is the dedicated computer for your automatic transmission. It takes data from engine and vehicle speed sensors to control exactly when the transmission shifts gears, how firmly it shifts, and when to lock the torque converter for better fuel efficiency. When it fails, these critical functions become erratic.
Do I really need to get this programmed at a dealership?
No. That’s the primary benefit of our service. We program the module to your vehicle’s unique VIN before we ship it. This makes it a true plug-and-play part, saving you the time, cost, and hassle of a dealer visit.
Where is the TCM located on my 2007 Uplander?
For the 2006-2009 Chevrolet Uplander, the TCM is located in the engine compartment, bolted to the top of the driver’s side (LH) strut tower. It’s easily accessible once you open the hood.
Will replacing the TCM fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem and requested the check engine light. While the new TCM will often resolve the underlying issue causing the P0700, it’s always wise to scan for any other specific codes (like P07xx) that can help confirm the TCM is the root cause.
Is there a core charge for my old part?
No, we do not require a core charge. You can keep your old part or dispose of it at your convenience, simplifying the repair process for you.
What kind of warranty is included?
This module is backed by our one-year warranty, giving you confidence and peace of mind in your repair.