Restore Peak Performance to Your Van’s Transmission
Is your 2006-2014 GMC Savana 2500 experiencing erratic shifting, getting stuck in gear, or displaying a check engine light? These are classic signs of a failing Transmission Control Module (TCM). The TCM is the electronic brain of your automatic transmission, responsible for orchestrating every gear change, managing torque converter lockup, and monitoring system health. When it fails, it can cripple your vehicle’s performance and reliability, leaving you stranded. This genuine GM T42 TCM, service part number 24255280, is the definitive solution to restore your transmission’s smooth, predictable operation.
The Plug-and-Play Solution: VIN Programmed for Your Vehicle
Forget expensive dealership visits and the hassle of post-installation programming. We take care of the critical software setup for you. Before this module ships, it is expertly programmed to your vehicle’s specific Vehicle Identification Number (VIN). This ensures that it arrives with the latest GM software updates, ready for immediate, plug-and-play installation. This crucial step guarantees seamless communication with your van’s other computers, like the Engine Control Module (ECM), for optimal performance, fuel efficiency, and functionality right out of the box.
From the Diagnostic Bay
We recently had a contractor’s 2011 Savana 2500 work van towed in. The complaint was simple: it was stuck in 3rd gear (limp mode) and the transmission warning light was on. Every day the van was down, he was losing money. A quick scan pulled code P0700 (Transmission Control System Malfunction). After checking the basics, we identified a faulty internal circuit in the TCM. Instead of a costly transmission rebuild, we installed one of our VIN-programmed T42 modules. In under an hour, the van was back on the road, shifting perfectly, with all codes cleared. It’s a common failure, and this part is the fast, reliable fix that gets hardworking vehicles back to work.
Common Symptoms of a Failing Savana 2500 TCM
- ✔ Harsh Shifting: Abrupt, jerky, or delayed gear changes during acceleration or deceleration.
- ✔ Stuck in Limp Mode: The transmission defaults to a single gear (usually 2nd or 3rd) to prevent further damage.
- ✔ Warning Lights: Illumination of the Check Engine Light or a specific transmission warning indicator on your dash.
- ✔ Diagnostic Trouble Codes (DTCs): Common codes include P0700, P0750, P0753, P0758, and other solenoid-related faults.
- ✔ No Upshift/Downshift: The transmission refuses to shift into higher or lower gears as needed.
- ✔ Poor Fuel Economy: Inefficient shifting patterns cause the engine to work harder, consuming more fuel.
- ✔ Communication Loss: A scan tool may be unable to communicate with the TCM, indicating a complete failure.
Simple Installation for DIYers and Professionals
Replacing the TCM on your Savana 2500 is a straightforward process. The module is conveniently located in the engine compartment on the right-hand side. The entire job can typically be completed in under 30 minutes with basic hand tools.
- Safety First: Disconnect the negative terminal from your vehicle’s battery.
- Locate the TCM: Find the module in the RH engine compartment.
- Disconnect and Remove: Carefully unplug the electrical connectors and unbolt the old module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical harnesses.
- Final Steps: Reconnect the battery. While the new module is plug-and-play, it’s good practice to use a scan tool to clear any stored DTCs from the vehicle’s memory.
With no core charge, you don’t have to worry about the cost or inconvenience of sending your old part back. This is a hassle-free repair designed to get you moving again quickly.
Guaranteed Compatibility and Reliability
This T42 TCM is a direct replacement for a wide range of GM vehicles and is interchangeable with numerous part numbers, including 24242391, 24234503, 24252114, and more. Built to meet stringent OEM specifications, it’s backed by a one-year warranty, giving you complete peace of mind. Restore the dependable performance your GMC Savana was built for. Order today for fast shipping and get back on the road with confidence.
Frequently Asked Questions
What does “VIN Programmed” mean for my Savana 2500 TCM?
It means we load the module with your van’s specific factory software using your VIN before we ship it. This makes the part truly plug-and-play, eliminating the need for an expensive trip to a dealership for programming.
Will this fix a P0700 trouble code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While a failing TCM is a very common cause, you should always confirm the diagnosis. If the TCM is indeed the faulty component, this replacement part will resolve the code.
Is this part difficult to install myself?
For most individuals with basic mechanical skills, this is a very manageable installation. The TCM is easily accessible in the engine bay of the Savana 2500, and the process involves simple disconnecting and reconnecting of bolts and electrical plugs. It typically takes less than 30 minutes.
Do I need to return my old part? Is there a core charge?
No, there is no core charge for this part. You can keep, recycle, or dispose of your old module without any extra fees or hassle.
How can I be sure this fits my vehicle?
This module is specified for 2006-2014 GMC Savana 2500 vans. It also fits a wide range of other GM vehicles from that era. You can confirm fitment by matching your existing part number to 24255280 or any of the interchangeable numbers listed in the description.