GM Service Manual Online
For 1990-2009 cars only

DTC

Description

Message Center Illuminated

B1397

DTC B1397 Device Voltage Reference Out #1 CKT Low

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B1398

DTC B1398 Device Voltage Reference Out #1 CKT High

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B1477

DTC B1477 Retained Accessory Power Circuit Low

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B1478

DTC B1478 Retained Accessory Power Circuit High

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B1480

DTC B1480 Battery Rundown Protection Circuit Malf

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B2527

DTC B2527 Front Fog Lamp Circuit Low

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B2577

DTC B2577 Headlamp Control Circuit Low

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B2585

DTC B2585 Parklamp Control Circuit Malfunction

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B2613

DTC B2613 Pass Compartment Dimming #1 Circuit High

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B2617

DTC B2617 Pass Compartment Dimming #2 Circuit Low

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B2618

DTC B2618 Pass Compartment Dimming #2 Circuit High

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B2647

DTC B2647 Ambient Light Sensor Circuit Low

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B2648

DTC B2648 Ambient Light Sensor Circuit High

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B2752

DTC B2752 Horn Relay Coil Circuit Low

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B2947

DTC B2947 Security System Sensor Power CKT Low

Security

B2948

DTC B2948 Security System Sensor Power CKT High

Security

B2957

DTC B2957 Security System Sensor Data Circuit Low

Security

B2958

DTC B2958 Security System Sensor Data Circuit High

Security

B2960

DTC B2960 Sec Sys Sensor Data Incorrect but Valid

Security

B2961

DTC B2961 Key In Ignition Circuit Malfunction

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B2973

DTC B2973 LF Door Key Switch Circuit Low

Security

B3031

DTC B3031 Security System Controller in Learn Mode

Security

B3033

DTC B3033 Security System Indicates Tamper

Security

B3102

DTC B3102 Keyless Entry Data Link Circuit Low

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B3137

DTC B3137 All Door Lock Circuit Low

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B3138

DTC B3138 All Door Lock Circuit High

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B3147

DTC B3147 RF Unlock Switch Circuit Low

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B3148

DTC B3148 RF Unlock Switch Circuit High

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U1255

DTC U1255 Class 2 Communication Malfunction

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U1301

DTC U1301 Class 2 Data Link High

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