What is a Tccm?
What is a Tccm? The Transfer Case Control Module (TCCM) is the brain behind the electronically shifted GM 4WD systems. The TCCM processes the shift request from the dash mounted mode selector buttons, executes the shift, and verifies the shift was completed. Where is the TCCM located on a Silverado? (Encode motor, TCCM, fuse and harness) TCCM in your case. The TCCM is located at the lower left of the instrument panel above the fuse block. The TCCM is pretty much a dealer and salvage item only that I know of. You have to take off the IP bezel, 4wd...