Circuit Description
WARNING: This page is about a different car, the 2006 GMC Yukon XL, 2006 Chevrolet Suburban, and 2006 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
The TCC/Stop lamp switch indicates the brake pedal status. The normally closed torque converter clutch (TCC) brake switch supplies a B+ signal to the powertrain control module (PCM). The signal voltage circuit opens when the brakes are applied.
If the PCM detects a closed TCC/Stop lamp switch during decelerations, DTC P0724 sets. DTC P0724 is a type C DTC.