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Home >> Isuzu >> 2007 >> Ascender 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 263 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information & Procedures >> OnStar Microphone Inoperative - Caller Cannot Be Heard >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2008 Isuzu Ascender, 2008 GMC Envoy, and 2008 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON, press OnStar® Call button. Verify that your voice cannot be heard clearly by the OnStar® Call Center.

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