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Non-GM Engine Calibrations Void Warranty!
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08-05-2008, 08:29 AM
HummBob
Hummer Guru
Join Date: Nov 2004
Location: Winnipeg, Manitoba - Canada
Posts: 2,726
Re: Non-GM Engine Calibrations Void Warranty!
If you return your tune to STOCK before service, can they still tell if it's been tuned???
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