GM Service Manual Online
For 1990-2009 cars only

Diagnose the DTCs in the order shown

Description

Module

DTC C0559 EEPROM Checksum Error

Passlock™

DTC B2947 Security System Sensor Power CKT Low

Passlock™

DTC B3033 Security System Indicates Tamper

Passlock™

DTC B2960 Sec Sys Sensor Data Incorrect but Valid

Passlock™

DTC B2957 Security System Sensor Data Circuit Low

Passlock™

DTC B2958 Security System Sensor Data Circuit High

Passlock™

DTC B2948 Security System Sensor Power CKT High

Passlock™

DTC B3031 Security System Controller in Learn Mode

Passlock™

DTC B0688 Security System Indicator Circuit High

Passlock™