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2002 chevy trailblazer_ls
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I'm having the same issues with the radio and speakers and instrument lights on 2004 Trailblazer. Any updates for this one?

Tony
Same issue with my 2002 TB-LS: left speaker works on and off; when it's very hot it will work; it's only my front left speaker that has this frustrating problem. I think it is inter-related to the other issue I have (CC, Shaky car @ certain speed, engine light blinking, coming on, and going off)!
 

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Well I can tell you it’s not a radio problem I have a 95 s10 blazer with intermittent speakers working so I put a after market in and it’s still does every day I crank it it’s just the back right speaker working then eventually after I stop and shut it off and crank it up I have 2 or more working I am wondering if the body control is malfunctioning I’ve seen on a few other vehicles that the speakers go throw the body control module if it’s messing up sometimes the speakers won’t work I’ll let you know if I fix the issue
 
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