1999 Am General Hummer Problems
Owner-reported complaints filed with NHTSA, grouped by component
Data refreshed
What this page shows
Everything below is an owner-reported complaint submitted to NHTSA about the 1999 Am General Hummer, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Reports by component
Ranked by how many owner reports name each component category
- Engine150.0%
- Seat belts150.0%
Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.
Each component in detail
What the reports in each category say, in the owners' own words
Engine
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.
From owner reports, verbatim
CYLINDER WALL NUMBER 8 CRACKED LEAVING THE ENGINE USELESS. *PH CONSUMER MADE AN INVESTIGATION ABOUT THE DEFECT OF THE VEHICLE AND FOUND OUT THAT GENERAL MOTORS (GM) KNEW ABOUT THE PROBLEM ON THE ENGINE BLOCK. UP TO THIS DATE GM REFUSED TO OFFER ANY ASSISTANCE ON THE REPLACEMENT OF THE ENGINE. DEALER SAID THAT GM KNEW ABOUT THE PROBLEM BUT NEVER GAVE ANY NOTICE OF A MAJOR ENGINE FAILURE.
Too few reports in this category for a page of its own — they appear in the full complaint list.
Seat belts
Reports naming seat belts, buckles, retractors and pretensioners.
From owner reports, verbatim
THE U.S. ARMY HAS RECENTLY MADE IT MANDATORY FOR ALL SOLDIERS DRIVING IN HUMMV'S (AND OTHER TACTICAL VEHICLES) TO WEAR THE KEVLAR HELMETS, EVEN ON PUBLIC HIGHWAYS. MOST OF THESE VEHICLES HAVE NO HEADREST. REQUIRING SOLDIERS TO ADD THE WEIGHT OF THE HELMET (3.1 TO 4.2 POUNDS) TO THEIR CRANIUM WILL SUBSTANTIALLY INCREASE THE PROBABILITY OF NECK INJURIES IN ANY VEHICLE ACCIDENT. *NM
Too few reports in this category for a page of its own — they appear in the full complaint list.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Elsewhere on this vehicle
Data sources
- NHTSA Office of Defects Investigation — owner-reported complaints and the components recorded on them
Data on this page last refreshed .