GM Service Manual Online
For 1990-2009 cars only

Remote Control Door Lock Receiver (RCDLR)

Battery Voltage: Display indicates battery voltage. Measured in volts.

Shift Lock Solenoid Command: The scan tool displays the commanded state of the solenoid when the brake pedal is applied or released the scan tool displays LOCK / UNLOCK

Shift Lock Solenoid State: The scan tool displays LOCK / UNLOCK the actual feedback state of the shift lock solenoid monitored by the RCDLR.

Transmission Control Module (TCM)

TCC Brake Switch: Displays ON or OFF status of the TCC Brake switch.

IMS A/B/C/P: Displays PARK / NEUTRAL / INVALID / REVERSE / DRIVE or LOW or HI for the state of each of the four inputs from the IMS. LOW displayed indicates a low voltage signal (0 volts) being monitored at the TCM. HI displayed indicates a high voltage signal (B+) being monitored at the TCM.