Having problems with your 2003 GMC Sierra 2500HD ?

Radio problems rear and right front speakers not working

Posted / edited by AnonymousUser on : 14-01-2019

Answers :

Try speaker on other side as test part if still not working trace wire for breaks if ok rt channel in audio unit out and needs replaced.
Repair Help & Product Troubleshooting for 2003 GMC Sierra 2500HD

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