Fix Your Van’s Shifting Problems for Good
If your 2006-2014 GMC Savana 1500 Van is giving you trouble—slamming into gear, refusing to shift, or stuck in limp mode—you’re not just dealing with an annoyance; you’re dealing with a vehicle that can’t be trusted. As a mechanic with over two decades of experience, I’ve seen this exact scenario countless times. The culprit is almost always a failing Transmission Control Module (TCM). This critical component is the brain of your 4L60E or 4L65E transmission, and when it goes, it takes your van’s reliability with it. This replacement Savana 1500 Van TCM, part number 24235732, is the definitive solution, arriving pre-programmed to your vehicle’s VIN for a hassle-free, plug-and-play installation.
A Technician’s Notebook
I recently had a contractor’s 2011 Savana 1500 roll into my bay. The van was stuck in 3rd gear (limp mode) and flashing a P0700 general transmission fault code. This van was his mobile office and tool carrier; downtime meant lost income. Instead of a complex internal transmission repair, my diagnostic scan pointed directly to an erratic TCM. We installed one of these VIN-programmed modules, and in less than an hour, the van was shifting perfectly. He avoided a costly tow to the dealership and was back on a job site the same day. This is the kind of straightforward, effective repair that keeps businesses running.
Is Your Transmission Showing These Symptoms?
A faulty TCM can manifest in several ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement. Ignoring these signs can lead to more severe and expensive transmission damage.
- ✔ Harsh, erratic, or delayed gear shifts.
- ✔ Vehicle stuck in a single gear (often called “limp mode”).
- ✔ Check Engine Light or Transmission Warning Light is on.
- ✔ Diagnostic Trouble Codes (DTCs) like P0700, P0750, or other solenoid-related faults are present.
- ✔ A sudden drop in fuel economy or transmission overheating.
- ✔ Complete loss of communication with the transmission.
A Straightforward Guide to Installation
One of the biggest benefits of this module is its simple installation. You don’t need to be a master mechanic to get this job done. For a GMC Savana Van, the process is particularly easy.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the TCM: On your 2006-2014 Savana 1500 Van, the TCM is conveniently located 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 Module: Bolt the new, pre-programmed TCM into place and securely reconnect the electrical harnesses. Ensure they click into place.
- Final Steps: Reconnect the negative battery terminal. While the module is plug-and-play, it’s best practice to use a basic OBD2 scan tool to clear any stored fault codes from the vehicle’s memory.
Verified Vehicle Compatibility
This T42 TCM is a direct replacement for a wide range of General Motors vehicles equipped with 4-speed automatic transmissions. While this page focuses on the Savana 1500 Van TCM, please verify your model in the list below. It is interchangeable with part numbers 24234503, 24252114, 24256960, and others.
This part will fit these makes and models with these options
SAVANA 1500 VAN 06-14 Transmission; (RH engine compartment)
EXPRESS 1500 VAN 06-14 Transmission; (RH engine compartment)
SAVANA 2500 VAN 06-14 Transmission; (RH engine compartment)
EXPRESS 2500 VAN 06-14 Transmission; (RH engine compartment)
SAVANA 3500 VAN 06-14 Transmission; (RH engine compartment)
EXPRESS 3500 VAN 06-14 Transmission; (RH engine compartment)
TAHOE 07-09 Transmission; (next to battery)
SILVERADO 1500 PICKUP 07-13 Transmission; (new style, smooth door skin), (next to battery), w/o hybrid
YUKON 07-09 Transmission; (next to battery)
SIERRA 1500 PICKUP 07-13 Transmission; (new style, smooth door skin), (next to battery), w/o hybrid
AVALANCHE 1500 07-08 Transmission; (next to battery)
SUBURBAN 1500 07-08 Transmission; (next to battery)
YUKON XL 1500 07-08 Transmission; (next to battery)
SILVERADO 2500 PICKUP 07 Transmission; new style (smooth door skin), 6.0L, (next to battery)
SIERRA 2500 PICKUP 07 Transmission; new style (smooth door skin), 6.0L, (next to battery)
COLORADO 08-12 Transmission; (RH rear engine compartment)
CANYON 08-12 Transmission; (RH rear engine compartment)
HUMMER H3 08-10 Transmission; (RH rear engine compartment)
ENVOY 06-09 Transmission; (LH engine compartment)
TRAILBLAZER 06-09 Transmission; (LH engine compartment), 8 cylinder for 06-07
SAAB 9-7X 06-09 Transmission; (LH engine compartment)
IMPALA 06-11 Transmission; (lower air cleaner housing)
MONTE CARLO 06-07 Transmission; (lower air cleaner housing)
GRAND PRIX 06-08 Transmission; (lower air cleaner housing)
LACROSSE 06-09 Transmission; (lower air cleaner housing)
ALLURE 06-09 Transmission; (lower air cleaner housing)
LUCERNE 06-11 Transmission; (LH engine compartment)
DTS 06-11 Transmission; (RH front engine compartment)
HHR 06-11 Transmission; (LH engine compartment)
COBALT 06-10 Transmission; (LH strut tower)
G5 07-10 Transmission; (LH strut tower)
G6 06-10 Transmission; (LH strut tower)
ION 06-07 Transmission; (behind LH strut tower)
AURA 07-09 Transmission; (LH frame rail front)
MALIBU 06-10 Transmission; (LH frame rail)
VUE 07-10 Transmission
And more…
Frequently Asked Questions
Frequently Asked Questions
What does ‘VIN Programmed’ mean for my Savana 1500 Van TCM?
It means we load your vehicle’s specific Vehicle Identification Number (VIN) and the latest GM software onto the module before we ship it. This ensures it communicates perfectly with your van’s engine and other systems right out of the box, with no need for an expensive trip to the dealership for programming.
Do I need any special tools for this installation?
No special tools are required. A basic socket set to remove the mounting bolts and potentially a flathead screwdriver to help release the connector clips is all you should need. An OBD2 scanner is recommended to clear old codes but is not strictly necessary for the part to function.
Is there a core charge? Do I have to return my old TCM?
No, there is absolutely no core charge. You can keep your old part, recycle it, or dispose of it at your convenience. This saves you the hassle and cost of return shipping.
Will this fix a P0700 transmission code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While this module often resolves the root cause (as it’s the TCM itself that is failing), you should ensure there are no other issues like faulty wiring or solenoids. In the vast majority of cases I’ve diagnosed, replacing the TCM clears this and related codes.
How do I know this is the right part for my vehicle?
This module fits 2006-2014 GMC Savana 1500 vans. You can also match the part number 24235732 or one of the interchangeable numbers listed in the description. When you provide your VIN at checkout, we perform a final verification to guarantee compatibility.