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Home >> Hummer >> 2008 >> H3 Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 491 (Cellular System, Entertainment System And Navigation System) >> Diagnostic Information and Procedures >> Radio Poor Reception >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2010 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect the antenna for physical damage.
    • If damage is found, repair or replace as necessary
  2. Radio ON, tune to several known FM, AM, and XM (if equipped) stations, and play a known good CD.