Is Your 2007 Sierra 2500 Shifting Erratically?
If your workhorse GMC Sierra is suddenly plagued by harsh gear changes, getting stuck in limp mode, or throwing transmission-related check engine lights, the problem is very likely a failing Transmission Control Module (TCM). As a technician with over 20 years of experience, I’ve seen this exact issue hundreds of times. The T42 TCM is the electronic brain of your 4L80E automatic transmission, and when it fails, it can make your truck feel unpredictable and unreliable. Don’t let a faulty module sideline your vehicleโthis is a straightforward fix you can do yourself.
“A customer’s 2007 Sierra 2500 came in last week with these exact symptomsโa P0700 code and it wouldn’t shift out of 3rd gear. He was convinced he needed a costly transmission rebuild. However, a quick diagnostic check showed the TCM wasn’t communicating properly. We installed one of our pre-programmed modules, and he was back on the road in under an hour, saving him thousands. It’s often the electronics, not the hard parts, that fail first.”
The Direct Solution for Common Transmission Problems
This OEM-quality T42 TCM is the definitive solution for restoring your truck’s performance. It arrives pre-programmed to your truck’s specific Vehicle Identification Number (VIN), ensuring it works perfectly right out of the box. This eliminates the need for expensive dealership programming or specialized scan tools.
- โ Eliminate Harsh Shifting: Puts an end to jarring, delayed, or missed shifts for smooth operation.
- โ Fix Check Engine Lights: Resolves common Diagnostic Trouble Codes (DTCs) like P0700, P0750, and other solenoid-related faults.
- โ Escape Limp Mode: Restores full gear functionality, getting your truck out of being stuck in a single gear.
- โ Restore Fuel Economy: Ensures efficient gear changes and proper torque converter lockup, which can improve your MPG.
- โ Plug-and-Play: No programming required. This module is ready for installation upon arrival.
Plug-and-Play Installation: No Dealer Visit Required
Installing your new 2007 Sierra 2500 TCM is a simple process that typically takes less than 30 minutes. On the ’07 Sierra with the 6.0L engine, you’ll find it conveniently located in the engine bay, right next to the battery.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical issues.
- Locate the TCM: Find the module mounted next to the battery. It will have several large electrical connectors.
- Disconnect and Remove: Carefully unplug the wiring harnesses. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed TCM into place and securely reconnect the wiring harnesses.
- Reconnect and Verify: Reconnect the negative battery terminal. Start the truck and ensure the check engine light is off and the transmission shifts smoothly. Clearing any stored codes with a basic scan tool is recommended.
Guaranteed Compatibility and Reliability
This module is a direct replacement for part number 24235340 and is interchangeable with a wide range of other GM service numbers, including 24252114, 24234503, and 24242391. Built to strict OEM standards and backed by our one-year warranty, this 2007 Sierra 2500 TCM provides a lasting repair for your GM truck, van, or SUV. Order today and restore the dependable performance you rely on.