From the Shop Floor: A Classic T42 TCM Failure
Do I need to take this part to a dealer for programming?
No. This is the biggest benefit of our service. We program the module to your vehicle’s VIN before it ships. It will arrive ready for installation with no additional programming or dealer visits required.
What is a TCM and what does it do?
The Transmission Control Module (TCM) is a computer that controls your automatic transmission. It reads data from various sensors to determine the perfect time to shift gears, control fluid pressure, and manage the torque converter. A working TCM is essential for smooth performance and fuel efficiency.
Is this part difficult to install myself?
For most individuals with basic mechanical skills, this is an easy installation. On the Silverado 1500, it’s typically located next to the battery and can be swapped in under 30 minutes with basic hand tools. Just disconnect the battery, swap the modules, and reconnect.
Will this fix my P0700 check engine light code?
In many cases, yes. The P0700 code is a general fault code indicating the TCM has detected a problem. If the TCM itself is the source of the failure, replacing it with this programmed unit will resolve the root cause and allow the code to be cleared.
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 needing to send it back to us.