If your 2006-2014 GMC Savana 2500 work van is experiencing erratic shifting, getting stuck in gear, or throwing transmission codes, the problem is often a failing Transmission Control Module (TCM). As a technician with over two decades of experience, I’ve seen how a faulty TCM can sideline a reliable workhorse, costing you time and money. This T42 TCM, part number 24235732, is the definitive solution to restore your van’s transmission performance and dependability.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We pre-program the module to your van’s specific Vehicle Identification Number (VIN) before shipping. This crucial step ensures that the TCM communicates flawlessly with your vehicle’s powertrain and other systems right out of the box. You can skip the expensive trip to the dealership for programming and get your Savana back on the road faster. This module directly manages the 4L80E or other compatible GM automatic transmissions, ensuring smooth gear changes, proper torque converter clutch engagement, and accurate diagnostics.
Is Your Savana Van Showing These Warning Signs?
A failing TCM can manifest in several ways. If you’re noticing any of the following issues, it’s a strong indicator that your module needs replacement. Ignoring these symptoms can lead to more severe transmission damage.
- ✔ Harsh, delayed, or unpredictable gear shifts.
- ✔ The vehicle is stuck in “limp mode,” often in 2nd or 3rd gear.
- ✔ Check Engine Light or Transmission Warning Light is on with Diagnostic Trouble Codes (DTCs) like P0700, P0750-P0753, or other solenoid-related faults.
- ✔ Failure to upshift or downshift, leading to poor acceleration and fuel economy.
- ✔ Intermittent loss of communication with the TCM or complete transmission failure.
A Technician’s Notebook
I recently worked with a local plumbing company whose fleet of Savana 2500 vans was a constant source of headaches. One van, a 2011 model, was stuck in limp mode with a P0700 code. The driver reported it would slam into gear intermittently. We could have spent hours chasing potential solenoid or wiring issues, but experience pointed directly to the T42 TCM. After confirming power and ground to the module, we installed one of our VIN-programmed units. The fix was immediate. All codes cleared, shifting returned to normal, and the van was back in service the same afternoon. This saved them from a potential transmission rebuild and hundreds of dollars in lost work time.
DIY Installation: Get Your Van Back to Work
Replacing the TCM on a Savana 2500 is a straightforward job that most DIYers or any professional mechanic can complete in under 30 minutes with basic tools. Our pre-programmed module makes it a true plug-and-play repair.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: On the 2006-2014 Savana 2500 Van, the TCM is typically located 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 and remove it from the vehicle.
- Install the New Module: Mount the new, pre-programmed TCM onto the bracket and securely fasten it. Reconnect the electrical connectors, ensuring they click into place.
- Final Steps: Reconnect the battery terminal. While the module is pre-programmed, it’s good practice to use a basic scan tool to clear any stored DTCs from the vehicle’s memory. Start the van and test drive to confirm smooth shifting.
Verified Fitment for Your GM Vehicle
This T42 TCM is a direct replacement for part number 24235732 and is interchangeable with other service numbers including 24252114, 24234503, and more. It fits 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 (Select models 2007-2013)
- Chevrolet Tahoe & GMC Yukon (Select models 2007-2009)
- Cadillac DTS, Buick Lucerne, Chevrolet Impala, and many more. Please verify your specific model in the full fitment list.
Frequently Asked Questions
Do I need to program this 2006-2014 Savana 2500 Transmission Module?
No. We handle all the programming for you. Simply provide your vehicle’s VIN during checkout, and the module will arrive ready for plug-and-play installation, saving you a costly trip to the dealer.
Where is the TCM located on my Savana 2500?
On most 2006-2014 GMC Savana and Chevrolet Express vans, you will find the Transmission Control Module mounted in the engine bay on the passenger’s side (RH side).
Will this fix a P0700 trouble code?
A P0700 code is a general transmission fault request from the TCM to the main engine computer (ECM). While this module often resolves the underlying issue causing the P0700 (like a solenoid circuit fault), you should always diagnose the specific codes stored within the TCM itself for a complete picture.
What is the warranty on this part?
This module comes with a one-year warranty, giving you peace of mind and confidence in your repair.
Is a core charge required for my old part?
No, there is no core charge. You can keep your old module without the hassle of returning it.