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John, GMC Technician
Category: GM
Satisfied Customers: 9176
Experience:  ASE MASTER TECHNICIAN/40 years experience
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2008 GMC Sierra 1500: stereo..Apillar speaker and rear door speaker

Resolved Question:

2008 GMC Sierra 1500 extended cab. Six speaker stereo. Apillar speaker and rear door speaker is not working. Driver door speaker works but is mostly static.
Submitted: 6 years ago.
Category: GM
Expert:  John replied 6 years ago.

Hello & Welcome to JA,


the circuits from the radio & amplifier will need to be checked to make sure they are not grounded & the circuit is good.This is done with an ohm meter & a "known good" speaker should be substituted in place of each of the problem ones. If the circuits check good & no difference with the substituted speaker your problem will be in the radio. The radio will need to be removed & sent to an AC Delco repair facility for repair.

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