GM Service Manual Online
For 1990-2009 cars only

DTC

Description

DTC Type*

Default Action

P0502

Vehicle Speed Sensor (VSS) Circuit - Low Input

A

    • DTC P0502 stores in PCM history
    • Freeze shift adapts
    • Maximum line pressure
    • Immediate landing to second gear
    • Inhibit TCC engagement

P0712

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

D

    • DTC P0712 stores in PCM history
    • Freeze shift adapts
    • The transmission temperature will be calculated by the PCM

P0713

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

D

    • DTC P0713 stores in PCM history
    • Freeze shift adapts
    • The transmission temperature will be calculated by the PCM

P0716

Automatic Transmission Input(Shaft) Speed Sensor

A

    • DTC P0716 stores in PCM history
    • Inhibit TCC engagement
    • Freeze shift adapts
    • Maximum line pressure

P0717

Automatic Transmission Input(Shaft) Speed Sensor

A

    • DTC P0717 stores in PCM history
    • Inhibit TCC engagement
    • Freeze shift adapts
    • Maximum line pressure

P0719

TCC Brake Switch Circuit - Low Input

D

    • DTC P0719 stores in PCM history
    • The PCM will inhibit TCC engagement

P0724

TCC Brake Switch Circuit - High Input

D

    • DTC P0724 stores in PCM history
    • The PCM will inhibit TCC engagement

P0741

Torque Converter Clutch Solenoid Valve Stuck Off

A

    • DTC P0741 stores in PCM history
    • Inhibit TCC engagement

P0742

Torque Converter Clutch Solenoid Valve Stuck On

A

    • DTC P0742 stores in PCM history
    • Freeze shift adapts
    • The TCC is commanded on for 1-2 and for 3-4 shifts

P0748

Pressure Control Solenoid Valve -- Electrical

D

    • DTC P0748 stores in PCM history
    • Freeze shift adapts
    • Maximum line pressure

P0751

1-2 Shift Solenoid Valve - Performance

A

    • DTC P0751 stores in PCM history
    • Freeze shift adapts
    • Inhibit TCC engagement
    • Maximum line pressure
    • Commands a soft landing to second gear

P0753

1-2 Shift Solenoid Valve - Electrical

A

    • DTC P0753 stores in PCM history
    • Freeze shift adapts
    • Inhibit TCC engagement
    • Maximum line pressure
    • Commands a soft landing to second gear

P0756

2-3 Shift Solenoid Valve - Performance

A

    • DTC P0756 stores in PCM history
    • Freeze shift adapts
    • Inhibit TCC engagement
    • Maximum line pressure
    • Immediate landing to second gear

P0758

2-3 Shift Solenoid Valve - Electrical

A

    • DTC P0758 stores in PCM history
    • Freeze shift adapts
    • Inhibit TCC engagement
    • Maximum line pressure
    • Commands a soft landing to second gear

P1810

Pressure Switch Assembly (PSA) Malfunction

A

    • DTC 1810 stores in PCM history
    • Freeze shift adapts
    • Inhibit TCC engagement
    • Assume D4 shift pattern
    • Elevate line pressure

P1811

Maximum Adapt and Long Shift

D

    • DTC P1811 stores in PCM history
    • Freeze shift adapts
    • Maximum line pressure

P1812

Transmission Fluid Over temperature

D

    • DTC P1812 stores in PCM history
    • Freeze shift adapts

P1871

Undefined Gear Ratio

D

    • DTC P1871 stores in PCM history
    • Freeze shift adapts
    • Maximum line pressure

P1887

TCC Release Switch Circuit Malfunction

A

    • DTC P1887 stores in PCM history
    • Freeze shift adapts
    • Maximum line pressure
    • Inhibit TCC engagement

*DTC Types:

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