GMC specific DTC OBD2 code: P1674 Tachometer Control Circuit
GMC specific DTC OBD2 code: P1693 Tachometer Circuit Low Voltage
GMC specific DTC OBD2 code: P1795 CAN Bus-Throttle Body Position
GMC specific DTC OBD2 code: P1657 1-4 Upshift Solenoid Control Circuit
GMC specific DTC OBD2 code: P1675 EVAP Vent Solenoid Control Circuit
GMC specific DTC OBD2 code: P1694 Tachometer Circuit High Voltag
GMC specific DTC OBD2 code: P1800 TCM Power Control Relay Circuit Open
GMC specific DTC OBD2 code: P1658 Starter Enable Relay Control Circuit
GMC specific DTC OBD2 code: P1676 Driver 4 Line 6
GMC specific DTC OBD2 code: P1695 Remote Keyless Entry Circuit Low