Restore Peak Performance to Your Workhorse Van
As a technician with over two decades of experience, I know that for a Savana 3500 owner, downtime isn’t just an inconvenience—it’s lost revenue. When your transmission starts acting up, you need a reliable, fast solution. This OEM-quality T42 Transmission Control Module (TCM), part number 24239224, is the definitive fix for the shifting problems plaguing your 2006-2014 GMC Savana 3500. It arrives expertly pre-programmed to your van’s specific VIN, eliminating the need for expensive dealership visits and getting you back on the job without delay.
The TCM is the brain of your automatic transmission, controlling everything from shift points to torque converter clutch engagement. When it fails, you’ll feel it immediately. This module is engineered to restore that crisp, predictable shifting you rely on, ensuring your van operates safely and efficiently whether you’re hauling cargo or transporting passengers.
Case Study: A Tricky Diagnosis
I once had a fleet manager bring in a 2011 Savana 3500 with a complaint of intermittent, bone-jarring shifts and occasionally getting stuck in 3rd gear. His drivers were losing confidence in the vehicle. We scanned it and found a generic P0700 code, but the solenoid codes were inconsistent, appearing one day and gone the next. Instead of throwing parts at it, we looked at the live data from the TCM. We saw erratic voltage readings that pointed directly to an internal failure in the module itself. Swapping in a VIN-programmed T42 TCM like this one solved the problem instantly. The van was back in service the same afternoon, a testament to how a precise diagnosis and the right part can save significant time and money.
Is Your Savana Van Showing These Telltale Signs?
A failing TCM will give you clear warnings. If you’re experiencing any of the following, it’s time to consider a replacement:
- ✔ Unpredictable, harsh, or delayed gear shifts that make driving uncomfortable.
- ✔ The transmission refuses to shift, often getting stuck in a single gear (limp mode).
- ✔ Your Check Engine Light or a dedicated transmission warning light is illuminated.
- ✔ Diagnostic Trouble Codes (DTCs) are present, especially P0700 (Transmission Control System Malfunction) or various solenoid-related codes (e.g., P0751, P0756).
- ✔ A noticeable drop in fuel economy or signs of the transmission running hotter than usual.
Get Your Work Van Back on the Road: A Quick Installation Guide
Installing your new Savana 3500 TCM is a straightforward job that most DIYers or any professional mechanic can complete in under an hour. For the GMC Savana and Chevrolet Express vans, the module is typically easy to access.
- Safety First: Always disconnect the negative terminal on your vehicle’s battery before starting any electrical work.
- Locate the Module: On most Savana/Express vans, you’ll find the TCM in the engine compartment, mounted on the right-hand side (passenger side).
- Disconnect and Remove: Carefully unplug the electrical connectors. Use a small screwdriver to gently release the locking tabs if necessary. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Bolt the new, pre-programmed module into place. Securely plug in the electrical connectors, ensuring they click to confirm a solid connection.
- Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s always good practice to use a basic scan tool to clear any stored fault codes from the vehicle’s memory. Start the engine and test drive to confirm smooth shifting.
Verified Fitment for Your GM Vehicle
This T42 TCM is a direct replacement for a wide range of General Motors vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L80E. While this page focuses on the Savana, it is also compatible with the following models. Please verify your specific application.
Interchangeable Part Numbers: 24252114, 24234503, 24230461, 24234274, 24235340, 24235754, 24238856, 24239224, 24239926, 24240400, 24241806, 24243901, 24243921, 24255280, 24256960, 24235732, 24235753, 24240449, YNXS.
EXPRESS 3500 VAN 06-14
SAVANA 2500 VAN 06-14
EXPRESS 2500 VAN 06-14
SAVANA 1500 VAN 06-14
EXPRESS 1500 VAN 06-14
SIERRA 1500 PICKUP 07-13
SILVERADO 1500 PICKUP 07-13
TAHOE 07-09
YUKON 07-09
SUBURBAN 1500 07-08
YUKON XL 1500 07-08
AVALANCHE 1500 07-08
SIERRA 2500 PICKUP 07
SILVERADO 2500 PICKUP 07
ENVOY & ENVOY XL 06-09
TRAILBLAZER & EXT 06-09
RAINIER 06-07
SAAB 9-7X 06-09
HUMMER H3 08-10
COLORADO 08-12
CANYON 08-12
SSR 05-06
DTS 06-11
LUCERNE 06-11
LACROSSE 06-09
ALLURE 06-09
IMPALA 06-11
MONTE CARLO 06-07
GRAND PRIX 06-08
MALIBU 06-10
G6 06-10
AURA 07-09
VUE 07-10
HHR 06-11
COBALT 06-10
G5 07-10
ION 06-07
PURSUIT 06
UPLANDER 06-09
MONTANA 06-09
TERRAZA 06-07
RENDEZVOUS 06-07
Frequently Asked Questions
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 handle all the programming for you before shipment. Simply provide your vehicle’s VIN during checkout, and the module will arrive ready for plug-and-play installation.
Is this a difficult part to install myself?
For most individuals with basic hand tools and some mechanical aptitude, this is a very manageable job. On the Savana 3500, the TCM is located in an accessible spot in the engine bay, typically requiring only the removal of a few bolts and electrical connectors.
Will this Savana 3500 TCM fix a P0700 code?
A P0700 code is a general fault code indicating the TCM has detected a problem. Often, a failing TCM is the root cause. While this module replacement resolves the issue in many cases, P0700 can also be triggered by other transmission problems like faulty solenoids or wiring. A full diagnostic scan is always recommended.
Is there a core charge for this module?
No, there is no core charge. You are not required to send your old, faulty module back to us, saving you time and return shipping costs.
What kind of warranty is included?
This module is backed by our standard one-year warranty, giving you peace of mind and confidence in your repair.