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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> Electrical >> Horns >> Horn Systems >> Diagnostic Information and Procedures >> Horns Always On >> Test Description

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. 4. Tests if ground is constantly being applied to the horn relay.
  2. 5. The horn relay control circuit includes the horn slip ring and the horn switch. The horn slip ring and the horn switch must be tested for a short to ground when testing the relay control circuit.
Fig 1: Diagnostic System Check - Horns Always On
G01566605Courtesy of GENERAL MOTORS CORP.
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