GM Service Manual Online
For 1990-2009 cars only

Important: If the DTC listed on Tech 2 is not contained in this list, refer to Diagnostic Trouble Code (DTC) List.

DTC

Type

Description

Diagnostic Table

P0218

C

Transmission Fluid Overtemperature

DTC P0218

P0562

C

System Voltage Low

DTC P0562

P0563

C

System Voltage High

DTC P0563

P0601

A

Transmission Control Module (TCM) Read Only Memory (ROM)

DTC P0601, P0602, P0603, P0604, or P1621

P0602

A

Transmission Control Module (TCM) Not Programmed

DTC P0601, P0602, P0603, P0604, or P1621

P0603

A

Transmission Control Module (TCM) Random Access Memory (RAM)

DTC P0601, P0602, P0603, P0604, or P1621

P0604

A

Transmission Control Module (TCM) Long Term Memory Performance

DTC P0601, P0602, P0603, P0604, or P1621

P0711

C

Transmission Fluid Temperature (TFT) Sensor Performance

DTC P0711, P0712, or P0713

P0712

C

Transmission Fluid Temperature (TFT) Sensor Circuit Low Voltage

DTC P0711, P0712, or P0713

P0713

C

Transmission Fluid Temperature (TFT) Sensor Circuit High Voltage

DTC P0711, P0712, or P0713

P0719

C

Brake Switch Circuit High Input (Stuck On)

DTC P0719

P0722

B

Vehicle Speed Sensor Circuit Low Voltage

DTC P0722

P0723

B

Vehicle Speed Sensor Circuit Intermittent

DTC P0723

P0724

C

Brake Switch Circuit Low Input (Stuck Off)

DTC P0724

P0741

B

Torque Converter Clutch (TCC) System-Stuck Off

DTC P0741

P0742

B

Torque Converter Clutch (TCC) System-Stuck On

DTC P0742

P0751

B

1-2 Shift Solenoid (SS) Valve Performance-NO First or Fourth Gear

DTC P0751

P0752

B

1-2 Shift Solenoid (SS) Valve Performance-No Second or Third Gear

DTC P0752

P0756

A

2-3 Shift Solenoid (SS) Valve Performance-No First or Second Gear

DTC P0756

P0757

A

2-3 Shift Solenoid (SS) Valve Performance-No Third or Fourth Gear

DTC P0757

P0787

A

3-2 Shift Solenoid (SS) control Circuit Low Voltage

DTC P0787

P0788

A

3-2 Shift Solenoid (SS) Control Circuit High Voltage

DTC P0788

P0894

B

Transmission Component Slipping

DTC P0894

P0961

C

Line Pressure Control (PC) Solenoid System Performance

DTC P0961

P0973

B

1-2 Shift Solenoid (SS) Control Circuit Low Voltage

DTC P0973

P0974

B

1-2 Shift Solenoid (SS) Control Circuit High Voltage

DTC P0974

P0976

A

2-3 Shift Solenoid (SS) Control Circuit Low Voltage

DTC P0976

P0977

A

2-3 Shift Solenoid (SS) Control Circuit High Voltage

DTC P0977

P1621

A

Transmission Control Module (TCM) Long Term Memory Performance

DTC P0601, P0602, P0603, P0604, or P1621

P1810

B

Transmission Fluid Pressure (TFP) Position Switch Circuit

DTC P1810, P1815, or P1816

P1815

B

Transmission Fluid Pressure (TFP) Valve Position Switch-Start in Wrong Range

DTC P1810, P1815, or P1816

P1816

B

Transmission Fluid Pressure (TFP) Valve Position Switch Indicates Park/Neutral (P/N) with Drive Ratio

DTC P1810, P1815, or P1816

P2763

B

Torque Converter Clutch Pressure Control Solenoid Control Circuit High Voltage

DTC P2763

P2764

B

Torque Converter Clutch (TCC) Pressure Control (PC) Solenoid Control Circuit Low Voltage

DTC P2764

P2769

B

Torque Converter Clutch Enable Solenoid Control Circuit Low Voltage

DTC P2769

P2770

B

Torque Converter Clutch (TCC) Enable Solenoid Control Circuit High Voltage

DTC P2770

U1304

B

Lost Communications with UART System

142526

U2100

B

No Communications with CAN bus (High Speed)

DTC U2100

U2105

B

CAN Bus No Communication with Engine Control Module

DTC U2105

U2107

C

Lost Communications with Body Control Module

DTC U2107

U2108

C

CAN Bus No Communication with ABS-TCS Electronic Control Unit

DTC U2108