GM Service Manual Online
For 1990-2009 cars only

Diagnostic Trouble Code Identification VIN M

Diagnostic Trouble Code (DTC) Identification Diagnostic Types

DTC

Description

DTC Type*

Default Action

P0502

Vehicle Speed Sensor (VSS) Circuit - Low Input

A

    • DTC P0502 stores in PCM memory
    • Default to 3rd gear
    • Inhibit TCC

P0560

System Voltage Malfunction

D

    • DTC P0560 stores in PCM memory
    • Default to 3rd gear
    • Inhibit TCC

P0712

Automatic Transmission Fluid Temperature (TFT) Sensor Circuit - Low Input (High Temperature Indicated)

D

    • DTC P0712 stores in PCM memory
    • Transmission defaults to a temperature of 95°C (203°F)

P0713

Automatic Transmission Fluid Temperature Sensor - High Input (Low Temperature Indicated)

D

    • DTC P0713 stores in PCM memory
    • Transmission defaults to a temperature of 95°C (203°F)

P0719

TCC Brake Switch Circuit - Low Input

D

    • DTC P0719 stores in PCM memory
    • The TCC uses a throttle position over 6% and a vehicle speed over 75 km/h (47 mph) for the TCC apply.

P0724

TCC Brake Switch Circuit - High Input

D

DTC P0724 stores in PCM memory

P0742

Torque Converter Clutch (TCC) System Stuck ON

B

DTC P0742 stores in PCM memory

P0751

1-2 Shift Solenoid Valve - Performance

B

    • DTC P0751 stores in PCM memory
    • Inhibit 3-2 downshifts when the vehicle speed is more that 48 km/h (30 mph)

P0753

1-2 Shift Solenoid Valve - Electrical

A

    • DTC P0753 stores in PCM memory
    • Inhibit 3-2 downshifts when the vehicle speed is more that 48 km/h (30 mph)

P0756

2-3 Shift Solenoid Valve - Performance

B

DTC P0756 stores in PCM memory

P0758

2-3 Shift Solenoid Valve - Electrical

A

    • DTC P0758 stores in PCM memory
    • Default to 3rd gear
    • Inhibit TCC

P1812

Transmission Fluid Over temperature

D

DTC P1812 stores in PCM memory

P1860

Torque Converter Clutch PWM Solenoid Circuit - Electrical

A

    • DTC P1860 stores in PCM memory
    • Inhibit TCC
    • Inhibit 4th gear in Hot mode

P1864

Torque Converter Clutch Solenoid Circuit - Electrical

A

    • DTC P1864 stores in PCM memory
    • Inhibit TCC
    • Inhibit 4th gear in Hot mode

P1870

Transmission Component Slipping

A

    • DTC P1870 stores in PCM memory
    • Inhibit TCC
    • Inhibit 4th gear in Hot mode

*DTC Types:

  • A - Emission-related, turns the MIL ON after the first failure.
  • B - Emission-related, turns the MIL ON after two consecutive trips with failure.
  • D - Non-emission-related, no lamps.