Get Your Silverado Shifting Smoothly Again
Is your 2007 Silverado 2500 experiencing delayed shifts, getting stuck in gear, or throwing transmission codes? You’re not just dealing with an annoyance; you’re facing a common failure of the T42 Transmission Control Module (TCM). As the electronic brain of your 4L80E automatic transmission, a failing TCM can cripple your truck’s performance and reliability. This replacement T42 TCM, part number 24241806, is the definitive solution. We pre-program it to your truck’s specific VIN, ensuring it works perfectly right out of the box—no expensive dealership visits required.
A Technician’s Notebook: The Misleading Solenoid Code
A customer brought in a 2007 Sierra 2500—the sister truck to the Silverado—with a classic complaint: harsh 1-2 shift and a P0752 code for ‘Shift Solenoid A Stuck On’. The previous shop had already replaced the solenoid inside the transmission pan, but the problem persisted. This is a scenario I’ve seen dozens of times. While the code points to a solenoid, the root cause is often the T42 TCM itself. The driver circuits inside the module weaken over time from heat and vibration, failing to properly command the solenoids. After a quick 15-minute swap with one of our VIN-programmed modules, the truck was shifting like new. The code was gone, and the customer was saved from a costly and unnecessary internal transmission repair. This highlights why starting your diagnosis at the TCM is crucial for these symptoms.
Is Your Truck Showing These Symptoms?
- ✔️ Harsh, banging shifts or erratic gear changes.
- ✔️ The vehicle is stuck in “limp mode,” often in 2nd or 3rd gear.
- ✔️ Check Engine Light is on with transmission-specific Diagnostic Trouble Codes (DTCs) like P0700, P0750, P0752, or other solenoid-related faults.
- ✔️ Delayed engagement when shifting from Park to Drive or Reverse.
- ✔️ A noticeable drop in fuel economy due to inefficient shifting.
- ✔️ Complete loss of communication with the transmission module.
A Straightforward Guide to Installation
- âś” Safety First: Always disconnect the negative terminal on your truck’s battery before starting any electronic component replacement.
- âś” Locate the Module: On your 2007 Silverado 2500, the TCM is typically mounted next to the battery in the engine compartment. It’s a silver box with several large electrical connectors.
- âś” Disconnect and Remove: Carefully unplug the electrical harnesses. They have locking tabs that need to be released. Then, unbolt the module from its mounting bracket.
- âś” Install the New TCM: Bolt the new, VIN-programmed module into place. Securely plug in the electrical connectors, ensuring they click to confirm they are fully seated.
- âś” Reconnect and Verify: Reconnect the battery terminal. Start the engine. The new module is ready to go, but 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 replacement for a wide range of General Motors vehicles equipped with 4-speed automatic transmissions (like the 4L60E, 4L65E, 4L70E, and 4L80E). While this page focuses on the 2007 Silverado 2500 TCM, it also fits many other models. Please verify your part number (24241806) or check the list below. Interchangeable part numbers include: 24252114, 24234503, 24230461, 24234274, 24235340, 24235754, 24238856, and others.
This part will fit these makes and models with these options
SILVERADO 2500 PICKUP 07 Transmission; new style (smooth door skin), 6.0L, (next to battery)
SIERRA 2500 PICKUP 07 Transmission; new style (smooth door skin), 6.0L, (next to battery)
SAVANA 2500/3500 VAN 06-14 Transmission; (RH engine compartment)
EXPRESS 2500/3500 VAN 06-14 Transmission; (RH engine compartment)
TAHOE 07-09 Transmission; (next to battery)
YUKON 07-09 Transmission; (next to battery)
SUBURBAN 1500 07-08 Transmission; (next to battery)
AVALANCHE 1500 07-08 Transmission; (next to battery)
HUMMER H3 08-10 Transmission; (RH rear engine compartment)
And many more GM cars, trucks, and SUVs from 2006-2014.
What does “VIN Programmed” mean for me?
What does “VIN Programmed” mean for me?
It means we load your vehicle’s unique Vehicle Identification Number (VIN) and the latest GM software onto the module before we ship it. This ensures it communicates perfectly with your truck’s other computers, like the Engine Control Module (ECM), for a true plug-and-play installation without needing a trip to the dealer for expensive programming.
Do I need to take my truck to a dealer after installation?
No. Because the module arrives pre-programmed to your VIN, you can install it yourself or have your local mechanic do it. No additional programming or calibration from a dealership is necessary, saving you time and hundreds of dollars.
Where is the TCM located on my 2007 Silverado 2500?
On the 2007 Silverado 2500 with the new body style (smooth door skin) and 6.0L engine, the Transmission Control Module is conveniently located in the engine bay, mounted right next to the battery. This makes for a quick and accessible replacement.
Will this fix a P0700 trouble code?
A P0700 code is a general fault request from the TCM to the ECM to turn on the check engine light. In many cases, a faulty TCM is the source of the problem that triggers the P0700 code. Replacing the failing TCM with our programmed unit will resolve the underlying issue and allow the code to be cleared.
Is there a core charge for my old part?
No, we do not require a core charge. You can keep your old module or dispose of it at your convenience, making the transaction simple and hassle-free.