Is Your 2007 Sierra 2500 Plagued by Transmission Problems?
Your GMC Sierra 2500 is a workhorse, but when the transmission starts acting up, it can bring your entire operation to a halt. If you’re experiencing sudden harsh shifts, getting stuck in one gear, or seeing that dreaded check engine light, the problem often isn’t the transmission itself, but its electronic brain: the Transmission Control Module (TCM). This T42 series TCM is the definitive solution, arriving pre-programmed to your truck’s specific VIN for a hassle-free, direct-fit replacement.
Expert Diagnostic Story
“A customer’s 2007 Sierra 2500 with the 6.0L came into my shop last month. It was stuck in 3rd gear (limp mode) and the owner was convinced he needed a full transmission rebuild, a quote he’d gotten for over $4,000. After a quick scan, I saw a P0752 code for Shift Solenoid A Stuck On. Instead of tearing down the transmission, I checked the TCM connectors first. Seeing no corrosion, I knew the module’s internal driver for that solenoid had likely failedโa common issue. We swapped in a VIN-programmed T42 module, and in 20 minutes, the truck was shifting perfectly. He saved thousands by correctly diagnosing the electronics first.”
Symptoms of a Failing GM T42 TCM
A faulty TCM can manifest in numerous ways, disrupting your vehicle’s performance and drivability. I’ve seen these issues hundreds of times in the shop. Look out for:
- โ Erratic and Harsh Shifting: Abrupt, jerky gear changes or a noticeable bang when shifting.
- โ Delayed Engagement: A long pause when shifting from Park into Drive or Reverse.
- โ Stuck in Limp Mode: The transmission will not shift out of 2nd or 3rd gear to prevent further damage.
- โ Warning Lights: An illuminated Check Engine Light or Transmission Warning Light on your dash.
- โ Diagnostic Trouble Codes (DTCs): Common codes include P0700 (Transmission Control System Malfunction) and various solenoid-specific codes (P0750-P0774).
- โ Poor Fuel Economy: Inefficient shifting and torque converter lock-up issues can cause a significant drop in MPG.
The Definitive Fix: A Pre-Programmed 2007 Sierra 2500 Transmission Control Module
Don’t let a faulty module sideline your truck. This replacement TCM is engineered to meet and exceed original equipment standards, providing a reliable and lasting solution. We handle the programming, so you can handle the simple installation.
- โ Plug-and-Play Solution: We program the module to your vehicle’s VIN before shipping. It arrives ready to install without requiring any expensive trips to the dealership for flashing.
- โ Restored Performance: Regain the smooth, precise shifting and torque converter control you expect from your GM vehicle.
- โ Guaranteed Quality: Built with high-quality components for long-term durability and backed by our one-year warranty for your peace of mind.
- โ No Core Charge: Keep your old part. There’s no need to worry about the cost or hassle of returning a core.
Plug-and-Play Installation: No Dealer Visit Required
Installing your new TCM is a straightforward process that you can complete in your own driveway in under 30 minutes. For the 2007 Sierra 2500, the module is conveniently located next to the battery.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts and to help reset the system.
- Locate the TCM: Find the module mounted in the engine bay, right next to the battery.
- 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. While the system often resets, it’s best practice to use a basic OBD2 scan tool to clear any stored transmission codes. Start the vehicle and test drive to confirm smooth operation.
This module is a direct replacement for part numbers 24235732, 24252114, 24234503, 24230461, 24234274, 24235340, 24235754, 24238856, 24239224, 24239926, 24240400, 24241806, 24243901, 24243921, 24255280, 24256960, 24235753, 24240449, and YNXS, ensuring broad compatibility across the GM lineup.