GM Service Manual Online
For 1990-2009 cars only

Diagnose the DTCs in the order shown

Description

Module

DTC C0559 EEPROM Checksum Error

Passlockā„¢

DTC B2947 Security System Sensor Power CKT Low

Passlockā„¢

DTC B3033 Security System Indicates Tamper

Passlockā„¢

DTC B2960 Sec Sys Sensor Data Incorrect but Valid

Passlockā„¢

DTC B2957 Security System Sensor Data Circuit Low

Passlockā„¢

DTC B2958 Security System Sensor Data Circuit High

Passlockā„¢

DTC B2948 Security System Sensor Power CKT High

Passlockā„¢

DTC B3031 Security System Controller in Learn Mode

Passlockā„¢

DTC B0688 Security System Indicator Circuit High

Passlockā„¢