Restore Your Uplander’s Shifting Performance
Is your 2006-2009 Chevrolet Uplander experiencing frustrating transmission problems? Issues like harsh shifting, getting stuck in gear, or an illuminated check engine light can turn any drive into a stressful ordeal. These are classic signs that the transmission control module (TCM), the electronic brain of your automatic transmission, has failed. Don’t let a faulty module sideline your vehicle. This direct-fit GM T42 Transmission Control Module, part number 24230461, is the reliable, plug-and-play solution to restore your minivan’s smooth and predictable performance.
The TCM is responsible for managing every aspect of your transmission’s operation, from selecting the correct gear and controlling shift pressure to managing the torque converter lockup for optimal fuel efficiency. When it fails, the communication between your engine and transmission breaks down, leading to the erratic behavior you’re likely experiencing. Our module comes pre-programmed to your vehicle’s specific VIN, eliminating the need for expensive dealership visits for programming. It’s designed to integrate seamlessly with your Uplander’s systems, ensuring immediate compatibility and correct operation right out of the box.
From the Diagnostic Bay
We had a customer bring in their family’s 2008 Uplander. The complaint was that it would randomly refuse to shift out of 2nd gear, making highway driving impossible. They were worried they needed a complete transmission rebuild, which would have cost thousands. After a quick scan, we pulled a P0700 code, indicating a general transmission fault. Digging deeper, we found solenoid circuit codes pointing to an internal TCM failure. Instead of a massive mechanical job, we installed one of these VIN-programmed T42 modules. The entire process took less than 30 minutes. After clearing the codes, the van shifted perfectly. The customer was relieved to have their reliable family vehicle back on the road for a fraction of the cost they had feared.
Diagnosing a Faulty GM T42 TCM
A failing TCM can manifest in various ways, often mimicking more severe mechanical transmission problems. Before condemning your entire transmission, check for these common electronic symptoms. Replacing the module is a common and effective repair for many GM vehicles equipped with 4-speed automatic transmissions like the 4L60E and 4L65E.
Key Symptoms and Part Features
- ✔ Erratic Shifting: Solves problems with harsh, delayed, or unpredictable gear changes.
- ✔ Limp Mode Resolution: Fixes the issue where the vehicle is stuck in a single gear (often 2nd or 3rd) as a failsafe.
- ✔ Check Engine Light Fix: Clears persistent transmission-related Diagnostic Trouble Codes (DTCs) such as P0700, P0750, P0753, P0758, and other solenoid-specific codes.
- ✔ Plug-and-Play Installation: This module is pre-programmed to your vehicle’s VIN. No extra dealership programming is required, saving you time and money.
- ✔ Restored Performance: Regain smooth acceleration, proper downshifts, and improved fuel economy by ensuring precise transmission control.
- ✔ OEM-Quality Build: Constructed to meet or exceed original equipment standards for long-lasting durability and reliable operation.
- ✔ No Core Charge: Keep your old part without the hassle or expense of a core return.
Your Solution for the 2006-2009 Uplander Transmission Module
This T42 TCM is the definitive fix for your vehicle’s electronic transmission woes. Specifically engineered for a wide range of GM vehicles, it’s the perfect 2006-2009 Uplander Transmission Module replacement. The VIN programming service included with your purchase ensures that the module arrives ready for installation, loaded with the latest software updates from General Motors. This critical step ensures all shift points and operational parameters are perfectly matched to your van’s powertrain, delivering performance as the factory intended.
Simple Installation Process
Installation is straightforward for a DIY mechanic or a professional technician. On the Chevrolet Uplander, the TCM is typically located on the driver’s side strut tower in the engine compartment. The process generally takes under 30 minutes.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the Module: Find the old TCM on the LH strut tower.
- Disconnect and Remove: Carefully unplug the electrical connectors and unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed module in place and securely reconnect the electrical harnesses.
- Final Steps: Reconnect the battery. It’s recommended to use a basic OBD2 scan tool to clear any stored transmission codes after installation to ensure a clean slate for the new module.
Broad Vehicle Compatibility
While this is a perfect fit for the Uplander, this module is also compatible with dozens of other GM cars, trucks, and SUVs. Please verify your part number or use the fitment list below to confirm compatibility. This module interchanges with service numbers: 24252114, 24234503, 24230461, 24234274, 24235340, and many more.
This part will fit these makes and models with these options
UPLANDER 06-09 Transmission; (LH strut tower)
ENVOY 08-09 Transmission; (LH engine compartment)
SAVANA 3500 VAN 06-14 Transmission; (RH engine compartment)
… and many more GM models. Please check the full fitment list on our product page.
Frequently Asked Questions
What does a Transmission Control Module (TCM) do?
The TCM is a computer that acts as the brain for your automatic transmission. It collects data from various sensors on the engine and transmission to control shift timing, line pressure, and torque converter lockup, ensuring smooth and efficient operation.
Is this module ready to install out of the box?
Yes. We pre-program this module to your vehicle’s specific VIN before shipping. This means it is a true plug-and-play solution, requiring no additional programming or trips to a dealership.
Where is the TCM located on my 2007 Chevrolet Uplander?
On the 2006-2009 Chevrolet Uplander, the transmission control module is conveniently located in the engine bay, mounted on the driver’s side (LH) strut tower, making it easily accessible for replacement.
Can I continue to drive my vehicle with a faulty TCM?
It is not recommended. Driving with a bad TCM can cause poor performance, reduced fuel economy, and unpredictable shifting that can be unsafe. In some cases, it can lead to further mechanical damage to the transmission itself.
What are some common trouble codes for a bad TCM?
A failing TCM will often trigger a check engine light. Common Diagnostic Trouble Codes (DTCs) include P0700 (Transmission Control System Malfunction) and various solenoid circuit codes like P0751, P0752, P0756, P0757, P0973, P0974, P2763, and P2764.