GM Service Manual Online
For 1990-2009 cars only

DTC

Description

B1552

Loss of Keep Alive Memory (KAM)

B1556

IPC EEPROM Odometer Error

B1557

EEPROM Calibration Error

B1910

Generator L-Terminal Open Circuit Problem

B1911

Generator L-Terminal Problem

B1981

Source Voltage Low (Engine Running)

B1982

Source Voltage High

B1983

Source Voltage Low

B2419

Twilight Sentinel Photo sensor Malfunction

B2510

Steering Wheel Controls HVAC Key Stuck

B2511

Steering Wheel Controls Convenience Key Stuck

B2515

Steering Wheel Controls Illegal Resistance Value

B2710

PASSKey® II Open/Shorted Key Pellet Before Good

B2711

PASSKey® II Open/Shorted Key Pellet After Good

B2750

PASSKey® II Data Communication Malfunction

B2780

PASSKey® II Wrong Resistor Value Before Good

B2781

PASSKey® II Wrong Resistor Value After Good

B2782

PASSKey® II Pellet Value Not Programmed

B2783

PASSKey® II Key Code/Password Corrupted

C1210

Brake Fluid Level Switch Open

U1016

Loss of Serial Communications - PCM

U1040

Loss of Serial Communications - ABS

U1064

Loss of Serial Communications - PZM

U1088

Loss of Serial Communications - SDM

U1144

Loss of Serial Communications - PHN

U1152

Loss of Serial Communications - ACM

U1153

Loss of Serial Communications - CCP

U1255

Class 2 Initialization Error