For 1990-2009 cars

# Body and Accessories

## All Component Locator

- Body Control Module Components
- Body Control System Component Views

## All Description and Operation

- Body Control System Operation

## All Visual Identification

- Body Control System Connector End Views

## Diagnostic Procedures

- Diagnostic System Check - Body Control System

## Diagnostic Trouble Codes

- DTC B1552 Loss of BCM Keep Alive Memory
- DTC B1556 BCM EPROM Write Error
- DTC B1558 BCM EPROM Checksum Error
- DTC B1970 Exterior Lamp Power
- DTC B1971 Inadvertent Power
- DTC B1973 High Power Control Fault
- DTC B1982 Device Power 1 Circuit High
- DTC B1983 Device Power 1 Circuit Low
- DTC B2470 Daytime Running Lamps Fault
- DTC B2471 Interior Lamp Fault
- DTC B2472 Low Beam Fault
- DTC B2473 High Beam Fault
- DTC B2476 Parklamp Fault

## Electrical/Electronic Schematic Diagrams

- Body Control Module Schematic References
- Body Control System Schematic Icons
- Body Control System Schematics

## General Diagnostic Information

- Clearing DTCs
- Diagnostic Trouble Code (DTC) Displaying
- Diagnostic Trouble Code (DTC) List/Type
- Scan Tool Diagnostics

## Other Specifications

- GM SPO Group Numbers

## Removal, Installation, and Replacement

- Body Control Module Replacement