sometimes it stays on, most of the time it flashes then off. At first it blew hot air out the pass side & cold drivers side. Dealer said sensor and fixed that, then about a week or two later it just won't get cold a/c symbal flashes then goes out.
I push the a/c button the icecycle symbal flashes a few times then turns off on 2003 Hummer H2
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have a/c module scanned for codes and post so we can adv
Finally got into the dealer they scanned a/c NO CODES.