From the Shop Floor: A Sierra Saved from a Costly Repair
From the Shop Floor: A Sierra Saved from a Costly Repair
A customer brought in his ’07 Sierra 2500, convinced he needed a full transmission rebuild. It was stuck in 3rd gear (limp mode) and shifting violently when it did engage. The quote from another shop was over $4,000. I hooked up my scan tool and found a P0752 code (Shift Solenoid ‘A’ Stuck On). While this can be a solenoid issue, my experience with these trucks pointed me to the TCM first. We swapped in a VIN-programmed 2007 Sierra 2500 TCM, cleared the codes, and took it for a test drive. The truck shifted perfectly. The total repair cost him a fraction of the rebuild quote. It’s a classic case where diagnosing the electronics first saves thousands.
Do I need to have this TCM programmed by a dealer?
No. This is the biggest benefit we offer. We pre-program the module to your vehicle’s VIN before shipping, so it’s ready for immediate installation right out of the box. This saves you time and the typical $150+ programming fee at a dealership.
Is there a core charge for my old part?
No, there is no core charge. You can keep or dispose of your old module without the hassle of sending it back.
What tools do I need for installation?
Basic hand tools are all that’s required. Typically, a socket wrench set (for the mounting bolts and battery terminal) is sufficient. No special electronic tools are needed.
Will this fix a P0700 transmission code?
A P0700 code is a general fault request from the TCM to the main engine computer (ECM) to turn on the check engine light. In many cases, a faulty TCM is the root cause. Replacing the TCM often resolves the underlying issue that triggered the P0700 code, but you should always scan for other specific codes (like P07xx) to confirm the diagnosis.
What is your warranty policy?
We stand behind our parts. This transmission control module comes with a one-year warranty, giving you peace of mind and confidence in your repair.