VehicleVerdict

1999 AM General Hummer problems

Verdict · NHTSA data

Limited data — recalls on file

NHTSA has just 2 complaints on file for the 1999 AM General Hummer — too few to judge reliability from owner reports alone — but 4 recall campaigns apply to this year, so any used example should have its VIN checked for completed recall work.

2

NHTSA complaints

4

Recalls

0

Investigations

0

Crash-involved

0

Fires reported

0

Injuries

0

Deaths

—

NCAP overall

How does 1999 compare to other Hummer years?

Hummer NHTSA complaints by model year, 1999 highlighted15 complaints1992: 1 complaints1993: 9 complaints1994: 10 complaints1995: 11 complaints1996: 4 complaints1997: 2 complaints1998: 3 complaints1999: 2 complaints2000: 2 complaints2001: 8 complaints2003: 15 complaints
Hummer NHTSA complaints by model year, 1999 highlighted. Red bars are years to avoid.

See all Hummer years to avoid →

What are the most common 1999 AM General Hummer problems?

ComponentComplaintsShare
Engine150%
Seats150%

Does the 1999 AM General Hummer have recalls?

4 NHTSA recall campaigns on file. Recall repairs are free at franchised dealers.

07E088000OtherOctober 24, 2007 · 121,680 units

Defect

CERTAIN HONEYWELL FRAM RACING BRAND HP4 AND HP8 OIL FILTERS THAT WERE MANUFACTURED FROM MAY 25, 2006, THROUGH SEPTEMBER 14, 2007, AND SOLD FOR USE AS REPLACEMENT EQUIPMENT FOR VEHICLES LIST ABOVE. THE AFFECTED FILTERS ARE MARKED WITH A DATE CODE A61451 THROUGH A72571 SEQUENTIALLY. THE DATE CODE AND PART NUMBER APPEAR ON THE FILTER HOUSING. FRAM RACING HP4 AND HP8 OIL FILTERS NOT BEARING A DATE CODE IN THIS RANGE ARE NOT AFFECTED BY THIS RECALL. THE GASKET OF THE OIL FILTER BECOMES MORE PLIABLE UNDER HIGH TEMPERATURES AND PRESSURES.

Consequence

THIS CONDITION MAY CAUSE INADEQUATE SEALING AND LOSS OF ENGINE OIL, POSSIBLY RESULTING IN A FIRE.

Remedy

HONEYWELL WILL REPLACE THE AFFECTED OIL FILTERS FREE OF CHARGE. THE RECALL BEGAN DURING NOVEMBER 2007. OWNERS CAN CONTACT FRAM CUSTOMER SERVICE TOLL-FREE AT 1-800-890-2075.

01V336000LightingOctober 31, 2001 · 2,839 units

Defect

VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES. THE TURN SIGNAL SWITCH PLASTIC CANCELLATION PIN CAN WEAR PREMATURELY CAUSING THE SIGNALS TO FAIL TO CANCEL AFTER COMPLETING A TURN.

Consequence

THIS COULD SEND AN INCORRECT LAMP SIGNAL TO OTHER VEHICLES, INCREASING THE RISK OF A CRASH.

Remedy

DEALERS WILL REPLACE THE TURN SIGNAL SWITCH WITH A NEW SWITCH HAVING A METAL CANCELLATION PIN. OWNER NOTIFICATION BEGAN NOVEMBER 16, 2001. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT AM GENERAL AT 1-800-638-8303.

00V005000BrakesJanuary 11, 2000 · 980 units

Defect

VEHICLE DESCRIPTION: A POTENTIAL CHAFING CONDITION OCCURS BETWEEN THE FLEXIBLE BRAKE LINES WHICH CONNECT THE MASTER CYLINDER TO THE ABS MODULATOR. THIS CONDITION CAN LEAD TO ONE OR BOTH OF THE BRAKE LINES DEVELOPING A BRAKE FLUID LEAK.

Consequence

A BRAKE FLUID LEAK CAB CAUSE A REDUCTION IN BRAKE LINE PRESSURE AND RESULTING IN LONGER-THAN-NORMAL STOPPING DISTANCES.

Remedy

DEALERS WILL REPLACE THE MASTER CYLINDER TO ABS MODULATOR LINES.

99V059000BrakesMarch 23, 1999 · 186 units

Defect

VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES. THE NUTS USED TO ATTACH THE MASTER CYLINDER TO THE HYDROBOOST BOLTS WERE OF THE METRIC TYPE RATHER THAN THE REQUIRED ENGLISH TYPE.

Consequence

A LOOSE MASTER CYLINDER CONDITION CAN OCCUR, CAUSING LONGER THAN NORMAL BRAKE PEDAL TRAVEL DURING BRAKE PEDAL APPLICATIONS.

Remedy

DEALERS WILL REPLACE THE MASTER CYLINDER-TO-HYDROBOOST MOUNTING BOLTS AND NUTS.

Consumer complaints filed with NHTSA

Representative excerpts, cleaned of personal information. These are consumer statements, not verified defects.

“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.…”

Complaint filed with NHTSA · Engine

“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…”

Complaint filed with NHTSA · Seats · December 1, 2004

1999 AM General Hummer — common questions

Is the 1999 AM General Hummer reliable?

The record is thin — 2 NHTSA complaints — so owner-report data can't strongly confirm reliability either way, though 4 recalls should be verified as completed.

Does the 1999 AM General Hummer have recalls?

Yes — NHTSA lists 4 recall campaigns affecting the 1999 AM General Hummer. Recall repairs are free at franchised dealers; check the VIN at nhtsa.gov/recalls to confirm the work was done.

Related

Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.

Compiled by Sharon Ben-Moshe, Founder.