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Discussion Starter · #1 ·
I recently purchased a used superchips 2705 for my 2002 lb7 and have been having trouble installing it. it's a LT so it has onstar and I've tried almost every combination of removing fuses and I still get one of two errors...the most common is 038 "application not supported" and other one I occasionally get is "devices not responding...remove superchips" I haven't been able to call superchips yet because it's the weekend but I was hoping someone else might have had this issue and could tell me I'm not SOL. I also have all the radio fuses pulled too and dome light turned off. thanks.
 

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There is a slight chance your rig has had an update that the tuner does not comply with. The guy that bought my old super chips years ago ran into that.
 
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