Diagnostic Aids

Always begin diagnosis with first DTC listed on scan tool. Scan tool must display DTC B2752 as a current code before performing this test. Inspect for sticking horn pad and/or switch. Perform visual inspection for loose or poor connections at all related components.

Fig 1: Identifying Underhood Fuse Block Relay Socket Cavities

Courtesy of GENERAL MOTORS CORP.

Fig 2: Identifying Body Control Module Harness Connector Terminals

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Fig 3: Identifying Multifunction Switch Harness Connector Terminals

Courtesy of GENERAL MOTORS CORP.

Fig 4: Identifying Underhood Fuse Block Harness Connector Terminals

Courtesy of GENERAL MOTORS CORP.