How do I fix the rear audio in my recently purchased 2001 Suburban?

Asked by Dec 09, 2011 at 07:13 AM about the 2001 Chevrolet Suburban LT 1500 4WD

Question type: Maintenance & Repair

Appears my front speakers are blown, and the rear radio control is missing. Head unit
won't control the rear at all. Will replacing that control fix the issue? Is it a "linked/looped"
system so to speak?

2 Answers

935

For starters, let's go over how the system works, the main "brain" of the audio system is the front head unit. the rear unit only disengages the rear four speakers when it is "on" (engaged to headphone mode), however, the signal for the rear speakers travels through it, so if it is mising, no signal will get to those speakers. The rear unit also sends a signal to the front unit to dampen the sub when it is engaged. I would replace the front AND rear door speakers, which is an easy job, just google how to replace them and there will be step by step instructions (I believe they are 6 3/4" round speakers). Then either find a way to jump the harness on the rear unit to get a signal to the rear speakers, or just repalce the unit and all should be well.

Thank you for your reply Eric. The explaination of the rear unit helps alot. At some point replacement of all will be the avenue we'll pursue. Have a good one!

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