98 GMC Sierra head unit
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=28518
Printed Date: July 26, 2025 at 2:14 PM
Topic: 98 GMC Sierra head unit
Posted By: bcuz
Subject: 98 GMC Sierra head unit
Date Posted: March 16, 2004 at 8:38 PM
I just installed a hi/lo RFconverter on my factory head unit in my 98 GMC Sierra truck. At the back of the head unit I cut the front speaker wires. I ran the output of the head unit to my RF converter and I now have the front speakers running off an amp. Everything is working great EXCEPT the lights for my number 3 and 6 on my head unit no longer work. Is there a wire on the back of the head unit that could have came loose that would only affect these two buttons? :errr: I am not sure what I may have done, but they worked fine before I did this work. Any ideas/suggestions would be greatly appreciated.
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bcuz
Replies:
Posted By: DYohn
Date Posted: March 16, 2004 at 10:12 PM
That's a new one on me... it could simply be one of those unhappy accidents that happen sometimes...
Posted By: jimmeezgolfvr6
Date Posted: March 16, 2004 at 10:37 PM
the bulbs that gm tends to use for dash lights and instrument lighting tends to blow out fairly easily from any form of impact or vibration. i wouldn't be surprised if that was the source of your problem here. the illumination wiring at the back of the h/u should affect all the lighting on it, not just 2 of the buttons.
you can consider taking apart the h/u to get at the bulbs, but it requires a fair amount of patience.
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