Restore Smooth Shifting to Your GMC Savana Van
If your 2006-2014 GMC Savana 1500 is suffering from harsh shifting, getting stuck in gear, or has an illuminated check engine light, a failing Transmission Control Module (TCM) is the most likely culprit. As a shop owner, I’ve seen hundreds of these GM work vans come in with transmission issues that weren’t mechanical, but electronic. This T42 TCM, part number 24241806, is the definitive solution. It arrives pre-programmed to your van’s specific Vehicle Identification Number (VIN), eliminating the need for expensive dealership visits and ensuring a perfect, plug-and-play installation right out of the box.
Case Study: A Tricky Diagnosis
Just last month, a contractor brought in his 2011 Savana 2500. The van would intermittently refuse to shift out of 2nd gear, especially after getting hot on a long job. He’d already replaced a shift solenoid with no luck. A quick scan showed a P0752 (Shift Solenoid ‘A’ Stuck On) and a general P0700 code. From my experience, when solenoid replacements don’t fix these intermittent electrical faults, the issue is almost always the TCM itself. We installed one of our VIN-programmed T42 modules, and the van was shifting perfectly within 30 minutes. He was back on the road the same day, a critical fix that saved him from costly downtime.
Is Your Savana Van Exhibiting These Transmission Issues?
A faulty TCM can manifest in several ways that disrupt your vehicle’s performance and reliability. Here are the most common signs I see in the shop when diagnosing a failing 2006-2014 Savana 1500 TCM.
- âś” Harsh, clunky, or erratic gear changes.
- âś” The vehicle is stuck in “limp mode” (usually 2nd or 3rd gear).
- âś” Delayed engagement when shifting from Park to Drive or Reverse.
- âś” Check Engine Light or Transmission Warning Light is on with codes like P0700, P0750, P0751, P0752, or other solenoid-related DTCs.
- âś” Poor acceleration and a noticeable drop in fuel economy.
- âś” Complete failure to upshift or downshift.
A Straightforward Installation for Your Savana Van
One of the best features of this module is its ease of installation. You don’t need a professional lift or specialized tools, making it a perfect job for a DIY enthusiast or a quick swap for a professional mechanic. For your Savana, the TCM is easy to access.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts and to help reset the system.
- Locate the TCM: On the 2006-2014 Savana 1500, the TCM is located in the engine compartment on the right-hand (passenger) side.
- Disconnect and Remove: Carefully unplug the electrical connectors. Press the release tabs firmly. 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. You should hear a ‘click’ as they lock in.
- Reconnect and Verify: Reconnect the battery terminal. Start the engine and let it idle for a minute. Use a basic OBD2 scan tool to clear any stored fault codes. Take the van for a test drive to confirm smooth shifting.
Verified Fitment Across the GM Lineup
While this is the correct part for your 2006-2014 Savana 1500 TCM, it is also compatible with a wide range of other GM vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L80E. Please verify your vehicle is on the list below.
- GMC: Savana 1500/2500/3500 Van (06-14), Sierra 1500/2500 Pickup (07-13), Yukon / Yukon XL (07-09), Envoy / Envoy XL (06-09), Canyon (08-12)
- Chevrolet: Express 1500/2500/3500 Van (06-14), Silverado 1500/2500 Pickup (07-13), Tahoe (07-09), Suburban 1500 (07-08), Avalanche 1500 (07-08), Impala (06-11), Monte Carlo (06-07), Cobalt (06-10), HHR (06-11), Colorado (08-12), Malibu (06-10), SSR (05-06)
- Buick: LaCrosse (06-09), Lucerne (06-11), Allure (06-09), Rainier (06-07), Rendezvous (06-07)
- Cadillac: DTS (06-11)
- Pontiac: G5 (07-10), G6 (06-10), Grand Prix (06-08), Pursuit (06)
- Saturn: Vue (07-10), Aura (07-09), Ion (06-07)
- Hummer: H3 (08-10)
- Saab: 9-7X (06-09)
Frequently Asked Questions
Do I need to program this module after I receive it?
No. This module comes fully pre-programmed to your vehicle’s VIN. It is a true plug-and-play solution, saving you a trip to the dealership and additional programming fees.
What tools are required for installation?
Installation is simple and typically only requires basic hand tools, such as a socket set to remove the mounting bolts and a flathead screwdriver to help with the connector tabs if they are stubborn.
Is there a core charge for my old part?
No, there is no core charge. You can keep your old module or dispose of it without the hassle of returning it.
What is the warranty on this TCM?
This transmission control module is backed by our one-year warranty, giving you peace of mind and confidence in your repair.