LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1127 (Horn System) >> Diagnostic Information and Procedures >> Horns Malfunction >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, press and release the steering wheel horn pad. The horns should sound and emit a clear and even tone only when the horn pad is pressed.
    • If the horns do not sound when the horn pad is pressed or continues sounding after the horn pad is released, refer to Circuit/System Testing .
    • If the sound emitted from the horns are not clear and even, refer to Diagnostic Aids for Horn - Poor Tone.
  2. Command the horns ON and OFF with the scan tool. The horns should turn ON and OFF when changing between the commanded states.
    • If the horns do not turn ON and OFF when changing between the commanded states, refer to Circuit/System Testing .
scientia non olet · About LEMON Manuals