Restore Your Savana’s Shifting Performance
If your 2006-2014 GMC Savana 1500 work van is sidelined with transmission problems, you’re losing time and money. A faulty Transmission Control Module (TCM) is often the culprit behind erratic shifting, dashboard warning lights, and a van that’s stuck in limp mode. As the electronic brain of your automatic transmission (like the 4L60E or 4L80E), the TCM’s health is critical for performance and reliability. This OEM-quality T42 TCM, part number 24238856, is the definitive solution, arriving pre-programmed to your van’s specific VIN for a true plug-and-play repair.
Case Study: A Tricky Diagnosis
I had a 2011 Savana 1500 cargo van come into the bay with a complaint of intermittent, harsh 1-2 shifts and occasionally getting stuck in 3rd gear after long highway drives. The driver said it would fix itself after sitting overnight. We couldn’t find any consistent solenoid codes, just a generic P0700. Instead of throwing parts at it, we looked at the TCM data stream. We noticed erratic sensor readings only when the engine bay was hot. This pointed to heat-related failure inside the original module. We installed one of these VIN-programmed T42 modules, and the problem was solved instantly. It’s a common failure point I’ve seen on dozens of these hardworking vans.
Is Your Savana Van Showing These Transmission Troubles?
A failing TCM can manifest in several ways. If you’re experiencing any of the following, this module is the likely solution for your 2006-2014 Savana 1500 TCM issues.
- ✔ Harsh, banging shifts or delayed gear engagement.
- ✔ Vehicle is stuck in a single gear (limp mode) and won’t shift up or down.
- ✔ The Check Engine Light or a transmission-specific warning light is illuminated.
- ✔ Your scanner shows DTCs like P0700, P0750, or other solenoid-related faults.
- ✔ A sudden drop in fuel economy or the transmission seems to be overheating.
- ✔ Complete loss of communication with the transmission module.
Get Your Van Back to Work: A Simple Installation Guide
One of the best features of this module is its straightforward installation. You don’t need a trip to the dealership for programming. For the GMC Savana 1500, the process is quick and only requires basic tools.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electronic component replacement.
- Locate the Module: On the 2006-2014 Savana vans, the TCM is typically found in the engine compartment on the right-hand (passenger) side.
- Disconnect and Remove: Carefully unclip the wiring harness connectors. Then, unbolt the old module from its mounting bracket.
- Install the New TCM: Bolt the new, pre-programmed module into place and securely reconnect the wiring harnesses. Ensure they click into place.
- 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 stored DTCs from the vehicle’s memory.
Verified Fitment for Your General Motors Vehicle
This T42 TCM is a direct replacement for part number 24238856 and interchanges with several other service numbers, including 24252114, 24234503, and 24242391. It is confirmed to fit a wide range of GM vehicles, including:
- ✔ GMC Savana 1500 / 2500 / 3500 Van (2006-2014)
- ✔ Chevrolet Express 1500 / 2500 / 3500 Van (2006-2014)
- ✔ Chevrolet Silverado & GMC Sierra (2007-2013)
- ✔ Chevrolet Tahoe, Suburban & GMC Yukon (2007-2009)
- ✔ Cadillac DTS, Buick Lucerne, Chevrolet Impala (2006-2011)
- ✔ Hummer H3, Chevrolet Colorado, GMC Canyon (2008-2012)
- ✔ And many other GM cars, trucks, and SUVs from 2006-2014.
Frequently Asked Questions
What does “VIN Programmed” actually mean?
It means we load your vehicle’s unique 17-digit Vehicle Identification Number (VIN) and the latest GM-certified software onto the module before we ship it. This ensures it communicates perfectly with your van’s engine computer and other systems right out of the box, eliminating the need for expensive dealership programming.
Do I need any special tools to install this 2006-2014 Savana 1500 TCM?
No special tools are required for the installation itself—just basic hand tools like a socket set to remove the module. A simple OBD2 scanner is recommended to clear any old codes after installation, but it is not required for the module to function.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module or recycle it locally without the hassle of shipping it back to us, saving you time and money.
How do I provide my VIN for programming?
There will be a field to enter your vehicle’s VIN during the checkout process. Please double-check it for accuracy to ensure a flawless plug-and-play experience.