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Hummer: common problems by model

6 Hummer models with NHTSA data and repair videos. Pick a model, then a model year.

Models

Components owners complain about

ComponentOwner complaintsinvolving a crashTechnical service bulletins (TSB)
Electrical system33100
Visibility24300
Engine14000
Structure9600
Service brakes8900
Air bags8800
Powertrain6800
Engine and cooling6700
Suspension6200
Steering5700
Fuel/propulsion system2800
Other8600

Read also

Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.