There are 1 owner-reported powertrain & transmission complaints for the 2009 Hummer H2in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
SINCE AUGUST OF 2009, HAVING PROBLEMS WITH ENGINE/TRANSMISSION. VEHICLE "DIED IN FLIGHT" IN AUGUST, VEHICLE COUGHS, STUTTERS, AND STALLS OUT EVERY DAY AT FIRST START-UP, AND I'M EXPERIENCING HARSH SHIFTING DAILY. I'M ADVISED THERE IS NO RESOLUTION TO THE DAILY STALL-OUT PROBLEM EVEN THOUGH THE VEHICLE HAS BEEN IN TO THE SERVICE DEPARTMENT FOUR TIMES SINCE 8/6/09. ON LAST VISIT TO SERVICE DEPARTMENT I WAS ADVISED THAT "GM IS AWARE OF THE PROBLEM BUT HAS NO FIX FOR IT" (CASE #11074714). *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026