If you’re dealing with the frustration of a 2007-2013 Silverado 1500 that won’t shift correctly, you’re in the right place. As a technician with over two decades of experience, I’ve seen countless trucks come into the bay with erratic shifting, a check engine light glaring from the dash, and a driver at their wit’s end. Often, the culprit isn’t the transmission itself, but its electronic brain: the Transmission Control Module (TCM). This VIN-programmed T42 TCM is the definitive, reliable solution to restore your truck’s performance and get you back on the road with confidence.
This isn’t just a replacement part; it’s a direct fix that arrives ready to install. We handle the programming for you using your vehicle’s VIN, loading the latest GM software updates. This eliminates the need for expensive dealership visits and specialized programming tools, making it a perfect solution for both professional mechanics and dedicated DIYers. It directly addresses the root cause of many frustrating transmission issues, ensuring your 4L60E, 4L65E, or 4L70E transmission functions exactly as the factory intended.
Is Your Silverado Showing These Signs of a Bad TCM?
- ✔️ Harsh, banging shifts or delayed gear engagement that makes driving unpleasant.
- ✔️ Vehicle is stuck in “limp mode,” usually in 2nd or 3rd gear, with no ability to upshift or downshift.
- ✔️ The check engine light or transmission warning light is on, with Diagnostic Trouble Codes (DTCs) like P0700 (Transmission Control System Malfunction) or various solenoid codes (P0750-P0774).
- ✔️ A noticeable drop in fuel economy as the transmission isn’t shifting at the optimal points.
- ✔️ Complete loss of communication with the module, leading to a no-start or no-shift condition.
From the Diagnostic Bay: A Common Silverado Story
A customer brought in his ’09 Silverado 1500, explaining it felt like it was “stuck in mud.” It wouldn’t shift out of what felt like third gear. He was worried he was looking at a multi-thousand dollar transmission rebuild. I pulled the codes and saw a P0700 and a few solenoid circuit faults. Instead of tearing into the transmission, I checked the TCM. After confirming power and ground, we knew the module was the issue. We swapped in a VIN-programmed unit just like this one. In less than an hour, the truck was shifting perfectly, all codes were cleared, and the customer saved a fortune. This is the most common fix for these symptoms.
Your Straightforward Installation Guide
Installing your new TCM is a simple process that most people can complete in their driveway in under 30 minutes. For the 2007-2013 Silverado 1500, the module is typically located right next to the battery in the engine compartment.
- Safety First: Before you begin, disconnect the negative terminal from your truck’s battery to prevent any electrical shorts and to help reset the vehicle’s computer systems.
- Locate the TCM: Open the hood and find the TCM mounted next to the battery tray. It’s a silver box with several large electrical connectors.
- Disconnect and Remove: Carefully unplug the electrical harnesses from the old module. There are typically release tabs you’ll need to press. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place. Securely plug the electrical connectors back in, making sure they click to confirm they are fully seated.
- Final Steps: Reconnect the negative battery terminal. Start the truck and allow it to idle for a few minutes. If you have a basic scan tool, it’s a good idea to perform a final clear of any stored DTCs.
Why Choose Our Pre-Programmed 2007-2013 Silverado 1500 TCM?
This module, also known by part number 24240400, is built to meet or exceed original equipment standards for reliability and longevity. The key benefit is our pre-programming service. By flashing the module to your specific VIN, we ensure it communicates flawlessly with your truck’s Engine Control Module (ECM) and other systems right out of the box. This restores precise shift points, proper torque converter lockup, and accurate diagnostic reporting, preventing further damage and ensuring a long service life for your transmission.
Verified Vehicle Compatibility
While this page focuses on the 2007-2013 Silverado 1500, this T42 TCM is compatible with a wide range of GM vehicles. Please verify your part number and vehicle model from the list below to ensure a perfect fit.
Chevrolet: Silverado 1500/2500 (07-13), Tahoe (07-09), Suburban 1500 (07-08), Avalanche 1500 (07-08), Express Vans (06-14), Impala (06-11), Cobalt (06-10), HHR (06-11), Colorado (08-12), Monte Carlo (06-07), SSR (05-06), Malibu (06-10)
GMC: Sierra 1500/2500 (07-13), Yukon / Yukon XL 1500 (07-08), Savana Vans (06-14), Canyon (08-12), Envoy (06-09)
Cadillac: DTS (06-11)
Buick: LaCrosse (06-09), Lucerne (06-11), Allure (06-09), Rainier (06-07), Rendezvous (06-07), Terraza (06-07)
Pontiac: G6 (06-10), G5 (07-10), 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)
Note: This part interchanges with numbers 24252114, 24234503, 24230461, 24234274, and more.
Frequently Asked Questions
Do I need to take my truck to a dealership for programming?
No. This module comes fully programmed to your vehicle’s VIN. It is a plug-and-play solution, saving you time and money on dealer service fees.
How do I provide my VIN number for programming?
After placing your order, you will be prompted to enter your 17-digit VIN. We cannot ship the part until we receive this information, as the programming is essential for the part to function.
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 kind of warranty is included?
This part comes with a one-year, unlimited mileage warranty, giving you peace of mind and protection for your investment.
Will this fix a P0700 code?
A P0700 code is a general fault code indicating the TCM has detected a problem. While a faulty TCM is a very common cause, this code can also be triggered by other transmission issues. Replacing a known-bad TCM is the correct step to resolving the P0700 and any related specific codes.