1998 Suburban OnStar Mute?


Unregistered guest
I have an 1998 Suburban with a Pioneer DEH-1700 (I know, it is cheap). The power stays on but the sound is being lost. I can thump the dash and get the sound back on....sometimes. I have checked all wiring etc. Could this be the old OnStar causing problems? Please advise.

Gold Member
Username: Illuminator


Post Number: 2575
Registered: Apr-05
How did you bypass the onstar system in the first place?

I'm fairly sure it is a loose wire...

Unregistered guest
In my ignorance, I used a supplied adapter to match the factory connector and matched the wires from the Pioneer to the adapter. The system worked fine for a few months. I had the same problem with the factory unit. I could not find a wiring fault and decided that the problem was internal to the system. The replacement worked great....for a few months. Thanks for the reply.

Unregistered guest
Anybody got any ideas? How about the wiring schematic?
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