Get Your Workhorse Back on the Road with a Reliable Transmission Fix
If your 2006-2014 Chevrolet Express 2500 Van is suffering from unpredictable shifting, getting stuck in gear, or throwing transmission codes, the problem is very likely a failing Transmission Control Module (TCM). As a technician with over two decades of experience, I’ve seen firsthand how a faulty TCM can sideline a perfectly good work van, costing you time and money. This isn’t just an annoyance; it’s a critical failure that compromises your van’s performance and safety. This T42 TCM, part number 24241806, is the definitive solution, arriving pre-programmed to your van’s specific VIN for a true plug-and-play repair.
Is Your Express Van Exhibiting These Transmission Problems?
A failing TCM sends clear warning signs. Ignoring them can lead to more significant transmission damage. Check if you’re experiencing any of the following:
- ✔ Harsh, slamming shifts or sudden, jerky gear changes.
- ✔ The transmission feels like it’s slipping or failing to engage properly.
- ✔ Your van is stuck in “limp mode,” often locked in 2nd or 3rd gear.
- ✔ The Check Engine Light is on with Diagnostic Trouble Codes (DTCs) like P0700 (Transmission Control System Malfunction), P0750, or other solenoid-related faults.
- ✔ Complete failure to upshift or downshift, leading to poor acceleration and terrible fuel economy.
- ✔ Intermittent loss of communication with the module, causing erratic behavior.
A Technician’s Notebook: The Intermittent Limp Mode Case
A local delivery company brought in their 2011 Express 2500. The driver complained that the van would randomly get stuck in 3rd gear, but only after it had been running for over an hour on hot days. After a restart, it would sometimes work fine. We couldn’t replicate the issue in the shop initially. Live data scan showed nothing unusual at first. However, knowing the history of these T42 modules, we suspected heat-soak failure. We let the van idle for 90 minutes and then took it for a drive. Sure enough, it slammed into limp mode and threw a P0700. The internal electronics of the original TCM were breaking down under heat. Installing a VIN-programmed module like this one provided an immediate, permanent fix, getting their essential work vehicle back in service the same day.
Plug-and-Play Installation to Get Your Van Back to Work
One of the biggest advantages of this module is that it eliminates the need for an expensive trip to the dealership for programming. We handle that for you. The installation is straightforward for any DIYer or professional mechanic. For the 2006-2014 Express 2500 Van TCM, the module is typically found in the engine compartment on the right-hand (passenger) side.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Old TCM: On your Express Van, find the module mounted in the engine bay. It will have several large electrical connectors.
- Disconnect and Remove: Carefully unplug the wiring harnesses. Then, unbolt the old module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the wiring harnesses. Ensure they click into place.
- Final Steps: Reconnect the battery terminal. While the battery disconnect clears most codes, it’s best practice to use a standard OBD2 scan tool to clear any remaining DTCs from the system’s memory. Start the vehicle and test drive to confirm smooth shifting.
Verified Fitment for a Wide Range of GM Vehicles
While this is the perfect solution for your Express Van, this T42 TCM is also compatible with a vast number of other GM cars, trucks, and SUVs equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L80E. Please verify your vehicle in the list below. It is a direct replacement for part numbers 24241806, 24252114, 24234503, and others.
- Chevrolet: Avalanche 1500 (07-08), Cobalt (06-10), Colorado (08-12), Express 1500/2500/3500 Van (06-14), HHR (06-11), Impala (06-11), Monte Carlo (06-07), Silverado 1500/2500 (07-13), SSR (05-06), Tahoe (07-09), Trailblazer (06-09)
- GMC: Canyon (08-12), Envoy / Envoy XL (06-09), Savana 1500/2500/3500 Van (06-14), Sierra 1500/2500 (07-13), Yukon / Yukon XL 1500 (07-09)
- Buick: Allure (06-09), LaCrosse (06-09), Lucerne (06-11), Rainier (06-07), Rendezvous (06-07)
- Cadillac: DTS (06-11)
- Pontiac: G5 (07-10), G6 (06-10), Grand Prix (06-08), Pursuit (06)
- Saturn: Aura (07-09), Ion (06-07), Vue (07-10)
- Hummer: H3 (08-10)
- Saab: 9-7X (06-09)
Frequently Asked Questions
What exactly does ‘VIN Programmed’ mean for me?
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 computer and other systems right out of the box, with no need for dealership tools or programming fees.
Will this 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. If your diagnostics point to a faulty module, replacing it with this unit is the correct repair and will clear the code once installed.
Is this a difficult part to install myself?
Not at all. For a DIYer with basic hand tools, this is a very straightforward job that typically takes less than 30 minutes. The location on the Express Van (RH engine compartment) is easily accessible.
Do I need to send my old TCM back (core charge)?
No, there is absolutely no core charge or need to return your old part. You can dispose of it or keep it, saving you the hassle and cost of return shipping.