Re: need help with climate control on H2
Try to get the hvac module scanned for codes, would be a big help to arrow it down. Once there is a code set system defaults to defrost. could be a number of things. Need a scanner that can scan for body codes not just powertrain.
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1987 Jeep YJ 403hp sbc 653hp on NOS
1998 Chev Z71
2007 Chev Trailblazer SS
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