Restore Peak Performance to Your Workhorse Van
If your 2006-2014 Chevrolet Express 1500 Van is suffering from erratic shifting, getting stuck in gear, or throwing transmission codes, the root cause 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. I’ve seen it countless times in my shop: a van that feels like the transmission is completely gone is brought back to life with a simple TCM swap. This T42 series module, part number 24243901, is the reliable, no-hassle solution to get your work van back on the road and running smoothly.
From the Diagnostic Bay: The ‘Bad Transmission’ That Wasn’t
A local contractor brought his 2011 Express 1500 into my bay, convinced he needed a full transmission rebuild. It was slamming into gear and wouldn’t shift past 2nd. The quote from another shop was over $3,000. He uses that van for every job, so he was desperate. I hooked up my scanner and pulled a P0700 (Transmission Control System Malfunction) and a few solenoid circuit codes. Instead of condemning the transmission, I checked the TCM. After seeing some tell-tale signs of internal failure, we swapped in a VIN-programmed module. In less than an hour, the van was shifting perfectly. He drove out of my shop for a fraction of the cost, and his business was back up and running the same day. This is a classic case where the 2006-2014 Express 1500 Van TCM is the hero of the repair.
Is Your Express Van Showing These Red Flags?
- ✔ Harsh, delayed, or unpredictable gear shifts.
- ✔ Vehicle is stuck in “limp mode” (usually 2nd or 3rd gear).
- ✔ Check Engine Light or Transmission Warning Light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) stored, such as P0700, P0750, P0753, P0758, or other solenoid-related faults.
- ✔ Failure to upshift or downshift properly, leading to poor acceleration.
- ✔ Decreased fuel economy and potential for transmission overheating.
The Direct-Fit Solution for Your 2006-2014 Express 1500 Van TCM
Don’t waste time and money on unnecessary dealership visits or complex programming procedures. We handle the critical step for you. By programming this module to your vehicle’s specific VIN before it ships, we ensure it communicates flawlessly with your van’s powertrain right out of the box. This eliminates compatibility errors and allows your transmission to operate based on the latest factory calibrations for the 4L60E, 4L65E, or 4L70E, restoring the smooth, reliable performance you depend on.
Quick-Swap Guide: Get Your Van Back to Work
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- ✔ Locate the Module: On most Express and Savana vans, the TCM is found in the engine compartment on the right-hand (passenger) side.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old TCM. Then, unbolt the module from its mounting bracket.
- ✔ Install the New TCM: Mount the new, pre-programmed module in place and securely reconnect the electrical connectors.
- ✔ Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s good practice to use a basic scan tool to clear any old fault codes from the vehicle’s memory.
Verified Fitment for Your GM Vehicle
This T42 Transmission Control Module is a direct replacement for a wide range of General Motors vehicles equipped with 4-speed automatic transmissions. While this page is focused on the Express van, it is also compatible with the following models. Please verify your specific part number (interchangeable with 24252114, 24234503, 24243901, and others) and vehicle options.
Chevrolet: Express 1500/2500/3500 (06-14), Silverado 1500/2500 (07-13), Tahoe (07-09), Avalanche (07-08), Cobalt (06-10), HHR (06-11), Impala (06-11), Monte Carlo (06-07), Colorado (08-12)
GMC: Savana 1500/2500/3500 (06-14), Sierra 1500/2500 (07-13), Yukon / Yukon XL (07-09), Envoy (06-09), Canyon (08-12)
Buick: LaCrosse (06-09), Lucerne (06-11), Allure (06-09), Rainier (06-07)
Pontiac: G6 (06-10), Grand Prix (06-08), G5 (07-10)
Cadillac: DTS (06-11)
Saturn: Vue (07-10), Aura (07-09), Ion (06-07)
Hummer: H3 (08-10)
Saab: 9-7X (06-09)
Do I need to take this part to a dealer for programming?
Do I need to take this part to a dealer for programming?
No. We pre-program the module to your vehicle’s VIN before shipping. It arrives ready for plug-and-play installation, saving you a trip to the dealership and additional programming fees.
How do I provide my VIN?
You can enter your vehicle’s 17-digit VIN during the checkout process. This is a critical step to ensure we program the module correctly for your specific Express Van.
Is this a reliable fix for a P0700 code?
A P0700 code is a general transmission fault request. It’s often accompanied by more specific codes pointing to a solenoid or the TCM itself. In many cases, a failing TCM is the trigger, and replacing it will resolve the P0700 and related codes.
What tools are required for installation?
Installation is straightforward for a DIYer or professional. You will typically only need basic hand tools, such as a socket set and a wrench to disconnect the battery. No specialized tools are required.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module without the hassle of returning it, making the repair process simpler and faster.