Body and Accessories

All Component Locator

• Body Control Module Components
• Body Control System Component Views

All Description and Operation

• Body Control System Circuit Description

All Visual Identification

• Body Control System Connector End Views

Diagnostic Trouble Codes

• DTC 12 Diagnostic System Check
• DTC 21/31 Courtesy Lamps Feed Shorted to Ground
• DTC 22/32 Courtesy Lamps Return Shorted to Battery
• DTC 23/33 RAP Feed Shorted to Ground or Battery
• DTC 24/34 Seatbelt Indicator Shorted to Ground or Battery
• DTC 25/35 Security Indicator Status
• DTC 41 Last Message Received Valid
• DTC 42 Last Message Received Invalid
• DTC 43 Last Message Received with Sumcheck Error
• DTC 44 Last Message Received with Encryption Error
• DTC 45 Receiver Processing in 20 Second Lockout
• DTC 55 Begin Configuration Display

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
• Intermittents and Poor Connections

Other Specifications

• GM SPO Group Numbers

Removal, Installation, and Replacement

• Body Control Module Replacement