If your 2006-2014 GMC Savana 2500 Van is experiencing erratic shifting, getting stuck in gear, or throwing transmission codes, you’re not just inconvenienced—you’re losing time and money. A faulty Transmission Control Module (TCM) is one of the most common culprits behind these frustrating and costly issues. As the electronic brain of your automatic transmission, the TCM dictates every shift, manages torque converter lockup, and monitors system health. When it fails, your reliable workhorse can quickly become a liability.
This is a direct-replacement T42 TCM, part number 24243901, designed to restore the crisp, predictable performance your GM vehicle had from the factory. The most significant benefit? We pre-program it to your van’s specific Vehicle Identification Number (VIN) before shipping. This means no expensive trips to the dealership for programming, no special scan tools required for setup, and no frustrating compatibility errors. It arrives ready for a true plug-and-play installation, getting your van back on the road and back to work faster.
From the Diagnostic Bay
I’ve seen countless work vans, especially the Savana and Express models, come into the shop with what the owner describes as a ‘possessed’ transmission. One week, a fleet manager brought in a 2011 Savana 2500 that was stuck in 3rd gear—classic limp mode. His driver couldn’t make deliveries, and the van was useless. We scanned it and pulled a P0700 (Transmission Control System Malfunction). After checking the basics, we pinpointed the TCM. The location on the RH side of the engine compartment exposes these modules to significant heat cycles, which, over 100,000+ miles, can degrade internal circuits. Replacing it with a pre-programmed unit like this one is the most reliable and efficient fix. We had his van shifting perfectly and back in service the same afternoon.
Is Your Savana Van Exhibiting These Transmission Problems?
A failing TCM can manifest in several ways. If you’re noticing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Harsh, slamming shifts or delayed gear engagement.
- ✔ The vehicle is stuck in a single gear (limp mode) and won’t shift up or down.
- ✔ Check Engine Light or Transmission Warning Light is illuminated with codes like P0700, P0750, or other solenoid-related faults.
- ✔ A sudden drop in fuel economy or the transmission seems to be overheating.
- ✔ Complete loss of communication with the transmission, leading to a no-shift condition.
- ✔ Intermittent electrical issues that seem to resolve and then return without reason.
Simple Installation to Get Your Van Back to Work
This is a repair that a confident DIYer or any professional mechanic can complete in under 30 minutes. Our VIN programming makes the electronic side of the job effortless.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent electrical shorts and help reset the system.
- Locate the Module: On the 2006-2014 Savana 2500, the TCM is typically found in the engine compartment on the right-hand (passenger) side.
- Swap the Part: Carefully unplug the electrical connectors from the old TCM. Unbolt it from its mounting bracket and set it aside. Bolt the new module in its place and securely reconnect the wiring harnesses.
- Final Steps: Reconnect the battery terminal. Start the vehicle and allow it to idle for a few minutes. While not always necessary, using a basic OBD2 scan tool to clear any stored Diagnostic Trouble Codes (DTCs) is a best practice.
- No Core Charge: You’re all done. There’s no need to send the old part back to us, saving you time and hassle.
Verified Fitment Across the GM Lineup
This T42 TCM is a reliable solution for a wide range of GM vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, 4L70E, and 4L80E. While this page is focused on the 2006-2014 Savana 2500 TCM, it is also compatible with the following models. Please verify the location noted for your specific vehicle.
- SAVANA 2500 VAN 06-14 Transmission; (RH engine compartment)
- ALLURE 06-09 Transmission; (lower air cleaner housing)
- AVALANCHE 1500 07-08 Transmission; (next to battery)
- AURA 07-09 Transmission; (LH frame rail front)
- CANYON 08-12 Transmission; (RH rear engine compartment)
- COBALT 06-10 Transmission; (LH strut tower)
- COLORADO 08-12 Transmission; (RH rear engine compartment)
- DTS 06-11 Transmission; (RH front engine compartment)
- ENVOY 06-09 Transmission; (LH engine compartment)
- EXPRESS 1500/2500/3500 VAN 06-14 Transmission; (RH engine compartment)
- G5 07-10 Transmission; (LH strut tower)
- G6 06-10 Transmission; (LH strut tower)
- GRAND PRIX 06-08 Transmission; (lower air cleaner housing)
- HHR 06-11 Transmission; (LH engine compartment)
- HUMMER H3 08-10 Transmission; (RH rear engine compartment)
- IMPALA 06-11 Transmission; (lower air cleaner housing)
- ION 06-07 Transmission; (behind LH strut tower)
- LACROSSE 06-09 Transmission; (lower air cleaner housing)
- LUCERNE 06-11 Transmission; (LH engine compartment)
- MALIBU 06-10 Transmission; (LH frame rail)
- MONTE CARLO 06-07 Transmission; (lower air cleaner housing)
- MONTANA 06-09 Transmission; (LH strut tower)
- RAINIER 06-07 Transmission
- RENDEZVOUS 06-07 Transmission; (air cleaner box)
- SAAB 9-7X 06-09 Transmission; (LH engine compartment)
- SIERRA 1500/2500 PICKUP 07-13 (Check notes for specific locations)
- SILVERADO 1500/2500 PICKUP 07-13 (Check notes for specific locations)
- SSR 05-06 Transmission; (front LH frame)
- SUBURBAN 1500 07-08 Transmission; (next to battery)
- TAHOE 07-09 Transmission; (next to battery)
- TRAILBLAZER 06-09 Transmission; (LH engine compartment)
- UPLANDER 06-09 Transmission; (LH strut tower)
- VUE 07-10 Transmission; (LH front engine compartment)
- YUKON & YUKON XL 1500 07-09 Transmission; (next to battery)
What does ‘VIN Programmed’ actually mean for my installation?
What does ‘VIN Programmed’ actually mean for my installation?
It means the module arrives at your door already loaded with the correct software for your Savana’s specific configuration. You don’t need to pay a dealership or specialized shop for programming. You can simply install it, and it will work correctly, communicating with your engine and other systems as intended.
Do I need to send my old TCM back as a core?
No, there is no core charge for this part. You can keep or dispose of your old module without any extra fees or hassle, simplifying the repair process for you.
Will this part fix a P0700 transmission code?
A P0700 code is a general fault code indicating the TCM has detected a problem. Often, the problem is the TCM itself. While this part is the correct fix for an internal TCM failure, you should always confirm there aren’t external issues like bad wiring or faulty solenoids. In a majority of cases I’ve diagnosed, replacing the TCM clears the P0700 and related codes.
Is this an OEM part?
This is a high-quality replacement part built to meet or exceed original equipment manufacturer (OEM) standards for fit, function, and durability. It’s backed by our one-year warranty for your peace of mind.