Get Your Workhorse Back on the Job with a Reliable, Programmed TCM
If your 2006-2014 Chevrolet Express 2500 Van is suddenly shifting erratically, getting stuck in gear, or throwing transmission codes, your Transmission Control Module (TCM) is the likely culprit. As a mechanic, I’ve seen countless work vans sidelined by a failed TCM, causing frustrating downtime and lost revenue. This isn’t just an inconvenience; it’s a critical failure that can leave you stranded. This T42 series TCM, part number 24230461, is the definitive solution to restore your van’s transmission performance and dependability.
The key to a successful and painless repair is our pre-programming service. Before we ship it, we flash the module with your van’s specific Vehicle Identification Number (VIN) and the latest GM software. This means it arrives ready for a true plug-and-play installation, eliminating the need for expensive dealership programming or specialized scan tools. You can get your van out of the bay and back to earning its keep without the extra hassle.
From the Diagnostic Bay: The Misleading Solenoid Code
A customer brought in his 2011 Express 2500, a plumber’s van, complaining of harsh 1-2 shifts and a P0752 code (Shift Solenoid A Stuck On). The previous shop wanted to drop the pan and replace the solenoid—a costly, time-consuming job. But based on my experience with these 4L80E-equipped vans, I suspected the TCM. The solenoids on these are robust; the TCMs, exposed to engine bay heat cycles for years, are not. We swapped in a programmed Express 2500 Van TCM, cleared the codes, and the van shifted perfectly. The problem wasn’t the solenoid itself, but the module’s inability to control it. This simple swap saved the customer a full day of downtime and hundreds in unnecessary labor.
Is Your Express Van Showing These Telltale Signs?
- ✔ Harsh, banging shifts or delayed gear engagement.
- ✔ The vehicle is stuck in “limp mode,” often in 2nd or 3rd gear.
- ✔ Check Engine Light is on with transmission-related Diagnostic Trouble Codes (DTCs) like P0700, P0750-P0758, or other solenoid circuit faults.
- ✔ The transmission refuses to upshift or downshift properly.
- ✔ A noticeable drop in fuel economy or signs of the transmission running hot.
- ✔ Complete loss of communication with the transmission module.
DIY Installation: Get Your Van Running in Under 30 Minutes
Replacing the Express 2500 Van TCM is a straightforward job that most DIYers or any professional technician can complete quickly. No need to even lift the vehicle.
- Safety First: Disconnect the negative terminal from your van’s battery to prevent any electrical shorts and help reset the system.
- Locate the Module: On the Express and Savana vans, the TCM is typically found in the engine compartment on the right-hand (passenger) side, mounted near the main fuse block.
- 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.
- Final Steps: Reconnect the battery terminal. Start the van and let it idle for a minute. Use a basic OBD2 scanner to clear any stored fault codes to ensure a clean slate for the new module.
This module is a direct replacement for a wide range of GM part numbers, including 24252114, 24234503, 24230461, and more, ensuring broad compatibility. With a one-year warranty and no core charge, it’s a hassle-free, reliable repair.
Verified Fitment for Your GM Vehicle
While this is the correct part for the 2006-2014 Express 2500 Van, this T42 TCM also fits a wide variety of other GM cars, trucks, and SUVs. Please verify your part number or contact us with your VIN to confirm compatibility for the following models:
- Chevrolet: Avalanche, Cobalt, Colorado, Express 1500/2500/3500, HHR, Impala, Malibu, Monte Carlo, Silverado 1500/2500, SSR, Suburban, Tahoe
- GMC: Canyon, Envoy, Savana 1500/2500/3500, Sierra 1500/2500, Yukon, Yukon XL
- Buick: Allure, LaCrosse, Lucerne, Rainier, Rendezvous
- Cadillac: DTS
- Pontiac: G5, G6, Grand Prix, Pursuit
- Saturn: Aura, Ion, Vue
- Hummer: H3
- Saab: 9-7X
Frequently Asked Questions about the Express 2500 Van TCM
Does this module really come programmed to my VIN?
Yes, absolutely. We require your vehicle’s VIN at checkout to load the correct software for your specific van. This ensures it works correctly right out of the box, with no additional programming required.
Is this a difficult part for a DIYer to install?
Not at all. On the Express Van, the TCM is easily accessible in the engine bay. With basic hand tools, the swap typically takes less than 30 minutes. Our step-by-step guide makes it even simpler.
Will this fix a P0700 trouble code?
A P0700 code is a general fault request from the TCM to the main engine computer (ECM) to turn on the check engine light. In most cases where the TCM itself has failed, replacing it with this programmed unit will resolve the root cause and allow the P0700 code to be cleared permanently.
What if I have a different part number on my old module?
GM uses many different service numbers for the same part. This module replaces numerous part numbers like 24252114, 24234503, 24235754, and others. As long as your vehicle is listed in our fitment chart, this module will work.
Is there a core charge? Do I need to send my old part back?
No, there is no core charge on this item. You can keep your old part, which saves you the time and expense of return shipping.