Fix Your Van’s Shifting Problems for Good
If your 2006-2014 Chevrolet Express 1500 Van is suffering from harsh shifts, getting stuck in gear, or has an illuminated check engine light, a failing Transmission Control Module (TCM) is the most likely culprit. As the central computer for your automatic transmission, the TCM dictates every shift, and when it fails, it can make your reliable workhorse feel unpredictable and unsafe. This replacement T42 TCM, part number 24252114, is the definitive solution, arriving pre-programmed to your van’s specific VIN for a true plug-and-play repair that restores the smooth, reliable performance you depend on.
From the Diagnostic Bay: The Case of the Limp-Mode Work Van
A few weeks back, a local contractor brought in his ’11 Express 1500 work van. The complaint was simple: “It won’t shift out of what feels like second gear.” The check engine light was on, and my scan tool pulled a P0700 (Transmission Control System Malfunction) and a P0752 (Shift Solenoid ‘A’ Stuck On). In my 20+ years of experience, seeing these codes together on a 4L60E-equipped vehicle almost always points to an internal TCM failure. The solenoids themselves rarely fail in that manner. Instead of wasting hours on complex electrical diagnostics, we ordered this exact VIN-programmed T42 module. The part arrived, we installed it in under 20 minutes, cleared the codes, and the van was shifting perfectly on the test drive. It’s a textbook repair that saves hours of diagnostic time and gets your vehicle back to work fast.
Is Your Express Van Showing These Warning Signs?
- âś” Harsh, slamming shifts or sudden, jerky gear engagement.
- âś” The vehicle is stuck in “limp mode,” often refusing to shift out of 2nd or 3rd gear.
- âś” Check Engine Light or Transmission Warning Light is illuminated with codes like P0700, P0750, P0751, or other solenoid-related faults.
- âś” Delayed shifting when moving from Park to Drive or Reverse.
- âś” A noticeable drop in fuel economy due to inefficient gear changes.
- âś” Complete loss of communication with the transmission module, preventing gear selection.
A Straightforward Guide to Installation
Installing your new 2006-2014 Express 1500 TCM is a simple job that most DIYers or any professional mechanic can complete quickly. No specialized tools are required.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the Module: On the Express and Savana vans, the TCM is typically found in the engine compartment on the right-hand (passenger) side.
- Disconnect and Remove: Carefully unclip the electrical connectors. Be gentle to avoid breaking the plastic tabs. Then, unbolt the module from its mounting bracket.
- Install the New TCM: Mount the new module securely onto the bracket and firmly reconnect the electrical harnesses until they click into place.
- Final Steps: Reconnect the battery terminal. While the module is plug-and-play, it’s good practice to use a basic scan tool to clear any stored fault codes from the vehicle’s memory.
Verified Vehicle Compatibility
This T42 TCM is a direct-fit replacement for a wide range of General Motors vehicles equipped with 4-speed automatic transmissions like the 4L60E, 4L65E, and 4L70E. It is fully interchangeable with part numbers including 24252114, 24234503, 24242391, and others. While this is the correct module for the 2006-2014 Express 1500 Van, it also fits:
- âś” Chevrolet Silverado, Tahoe, Suburban, Impala, HHR, Cobalt
- âś” GMC Sierra, Yukon, Savana, Canyon
- âś” Cadillac DTS, Buick LaCrosse, Lucerne
- âś” Pontiac G6, Grand Prix
- âś” Hummer H3, Saab 9-7X, and more.
Always verify fitment using your vehicle’s year, make, and model, but rest assured this part offers broad compatibility for your repair needs.
Frequently Asked Questions
Do I need to take my van to the dealer for programming?
Absolutely not. We program the module to your van’s VIN before it ships. This means it’s ready for installation right out of the box, saving you time and the high cost of dealership programming.
Will this fix a P0700 transmission code?
In many cases, yes. The P0700 code is a general fault code indicating the TCM has detected a problem and requested the check engine light. If the root cause is a faulty TCM, replacing it will resolve the code.
Where is the TCM located on a 2010 Chevy Express?
For the 2006-2014 Express and Savana van series, the Transmission Control Module is located in the engine bay, on the right-hand (passenger) side.
Is this a difficult part to replace myself?
Not at all. With basic hand tools and access to the engine bay, most people can swap this module in under 30 minutes. It’s one of the more straightforward electronic repairs you can perform.
Is there a core charge for my old part?
No, we do not require a core return. You can keep your old part, which simplifies the process and saves you the hassle and cost of shipping it back.