There are 1 stored owner reports matching the powertrain & transmission leading-label group for the 2009 Hummer H2 in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 1 of 1 matching reports.
Open the full vehicle complaint log (all categories)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.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.