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International Automotive Technicians Network
Re: 2003 GMC SIERRA 2500HD AC INOP
Posted to HVAC Forum on 8/5/2007

6.0l, auto air, my mistake it is in ac module code, 1gthk23u93f211965, no tech 2 available. read the thread it is possible. does have a electric camper brake installed on knee bolster. will have vehicle back on the 7th. i will look closely in the area [...]. Login to read more.