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  1. I have a 2005 GMC Envoy SLT, I purchased the vehicle recently. When I brought it home the a/c system was working perfectly, then suddenly stop blowing through the vents. I replaced the relay and it started working again for about a month or more, then completely stopped blowing again. Yesterday I replaced the blower motor and it started blowing ice cold again, I let it run for about 10 minutes and then shut the vehicle off. A couple of hours later I returned to the vehicle only to find it was back to not blowing any air at all again and I’m lost now on what to do next