Get Your Workhorse Van Back on the Road
If your 2006-2014 Chevrolet Express 1500 Van is suffering from erratic shifting, getting stuck in gear, or throwing transmission codes, the culprit is often a failing Transmission Control Module (TCM). As the electronic brain of your automatic transmission, a faulty TCM can sideline your vehicle, costing you time and money. This replacement T42 TCM, part number 24234274, is the definitive solution to restore your van’s performance and reliability. It arrives pre-programmed to your specific Vehicle Identification Number (VIN), eliminating the need for expensive dealership visits and ensuring a seamless, plug-and-play installation.
Case Study: A Tricky Diagnosis
I recently had a 2011 Express 1500 in the shop that was a real head-scratcher. The owner, a local plumber, said it would randomly refuse to shift out of 2nd gear (limp mode) but had no consistent Check Engine Light. He’d already replaced two shift solenoids based on another shop’s advice, with no luck. After connecting my scan tool, I saw a history of intermittent communication loss codes (U-codes) alongside the generic P0700. In my 20+ years of experience, this pattern of intermittent electrical faults and limp mode almost always points back to a failing module, not the mechanical parts. We installed a VIN-programmed 2006-2014 Express 1500 TCM, and the problem was solved instantly. It saved him from a potential, and unnecessary, transmission rebuild.
Is Your Express Van Showing These Symptoms?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Harsh, clunky, or delayed gear shifts that disrupt your drive.
- ✔ 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 P0700 (Transmission Control System Malfunction), P0750, or other solenoid-related codes.
- ✔ A noticeable decrease in fuel economy due to inefficient shifting.
- ✔ Complete loss of communication with the module, leading to a no-start or no-shift condition.
A Straightforward Guide to Installation
Replacing the 2006-2014 Express 1500 TCM is a job most DIYers or any professional mechanic can complete in under 30 minutes. Our VIN programming makes it a direct-fit, hassle-free process.
- Safety First: Begin by disconnecting the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: On the Express and Savana vans, the TCM is typically found in the engine compartment on the right-hand (passenger) side.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old module. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Mount the new, pre-programmed TCM in the same location and securely fasten it. Reconnect the electrical connectors, ensuring they click into place.
- Final Steps: Reconnect the negative battery terminal. While our programming resolves most issues, it’s good practice to use a basic scan tool to clear any stored DTCs from the vehicle’s memory.
Verified Vehicle Compatibility
This module is a direct replacement for part number 24234274 and is interchangeable with service numbers like 24252114, 24234503, 24230461, and more. It is engineered to fit a wide range of General Motors vehicles, including:
- Chevrolet: Express 1500/2500/3500 Van (2006-2014), Silverado, Tahoe, Suburban, Avalanche, Impala, Cobalt, HHR, Monte Carlo, Colorado
- GMC: Savana 1500/2500/3500 Van (2006-2014), Sierra, Yukon, Envoy, Canyon
- Buick: LaCrosse, Lucerne, Allure, Rainier, Rendezvous
- Cadillac: DTS
- Pontiac: G6, Grand Prix, G5, Pursuit
- Saturn: Vue, Aura, Ion
- Hummer: H3
- Saab: 9-7X
This pre-programmed 2006-2014 Express 1500 TCM is the most reliable and efficient way to fix your transmission’s electronic issues and restore its factory performance. Order today and get your van back to work.
Frequently Asked Questions
Do I need to have this module programmed by a dealer?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for immediate installation, saving you time and money.
Where is the TCM located on my 2009 Express 1500?
On the 2006-2014 Express and Savana vans, the Transmission Control Module is located in the engine bay, on the right-hand (passenger) side.
Is this part a genuine GM part?
This is a high-quality replacement part built to meet or exceed original equipment (OEM) specifications for performance and durability. It comes with a one-year warranty.
Will this fix a P0700 code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause, you should ensure other transmission components are in good working order. A faulty TCM is a very common cause for this code.
Do I need to send my old part back?
No, there is no core charge for this part. You can keep or dispose of your old module without any hassle.