H2 altitude problem [Archive] - Hummer H2 Forum: H2 forums

H2 altitude problem

07-12-2009, 12:44 PM
My 2003 H2 died several times at about 8-9000 ft above seal level. It would reluctantly restart and died again several times. No warning lights and no recurrence after descending to 2000 ft. No error code could be pulled from the OBD. Runs fine now. Any ideas on this problem?