GM Service Manual Online
For 1990-2009 cars only

Problem

Action

Poor Horn Tone

    • Tighten the bolts in the mounting area.
    • Repair the faulty connections or the ground.

Low-Pitched Moan (Sounds Like Mooing)

    • A low-pitched moan indicates a high current.
    • Adjust the current..

Weak Tone

    • A weak tone indicates a low current.
    • Repair the faulty connections or ground.
    • If the condition persists, adjust the current..

Weak, Strained Tone

  • Remove the foreign object from the horn.