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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1576 (Entertainment System) >> Diagnostic Information and Procedures >> Speakers Inoperative - One or More >> One Speaker Inoperative >> With RPO UQA (Bose)

With RPO UQA (Bose)

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Speaker output circuit from amplifier open or shorted. Test the appropriate speaker output circuits for an open or short. Refer to CIRCUIT TESTING  and WIRING REPAIRS  in Wiring Systems.
  2. No audio output from the amplifier. Test for any AC voltage between the appropriate speaker output circuits at the speaker harness connector, disconnected with the radio volume adjusted to an audible level. If AC voltage is present, replace the speaker. Refer to SPEAKER REPLACEMENT REFERENCE   .  If no AC voltage is present, replace the amplifier. Refer to AMPLIFIER REPLACEMENT (BRAVADA, ENVOY, TRAILBLAZER)   or AMPLIFIER REPLACEMENT (ENVOY XL, TRAILBLAZER EXT)   . 
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