Problems owners report
Complaints filed with NHTSA about the 1998 AM General Hummer, by the system named in each complaint. One complaint can name several.
- Steering2
- Engine and engine cooling1
NHTSA ODI complaints (public domain) · updated 23 Oct 2026 · 0 injuries and 0 deaths reported
Compared with other years
NHTSA ODI complaints by model year
Recalls
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.
Whether a recall was fixed on a particular car is known only to the manufacturer: check the VIN at nhtsa.gov/recalls.
NHTSA recalls · summaries in NHTSA's own words
Service bulletins
What AM General told its dealers about the 1998 AM General Hummer: known faults, fixes and updates.
| Bulletin | Summary |
|---|---|
| 627034 | CUSTOMER NOTIFICATION LETTER REGARDING CUSTOMER SATISFACTION CAMPAIGN AMG R0101 - TRANSFER CASE COOLER REPLACEMENT. *TT |
| 627030 | CUSTOMER SATISFACTION CAMPAIGN AMG R0101 REGARDING TRANSFER CASE COOLER. *TT |
| 621771 | SUBJECT REGARDING REVISED FRONT DOOR ARMREST. *TT |
| 621768 | SOME VEHICLES MAY, AFTER COMING TO A STOP, EXHIBIT A MOMENTARY SMALL INCREASE IN ENGINE IDLE SPEED (APPROX. 250 RPM). *TT |
| 618829 | INFORMATION ON THE TRAILER TOW KIT. *TT |
| 617804 | THIS BULLETIN MENTIONS THAT STARTING WITH THE SEPTEMBER GENERAL MOTORS TIS UPDATE, HUMMER DIAGNOSTIC INFORMATION IS INCLUDED FOR THE TECH 2 SCANNER. THE SOFTWARE WILL INCLUDE DIAGNOSTIC TROUBLE CODE (DTC) RETRIEVAL, DATA STREAM ACCESS, SNAP SHOT CAPABILITIES, VIN AND CALIBRATION IDENTIFICATION AND MODULE FLASH CAPABILITIES. *TT |
| 612491 | SOME VIN Z VEHICLES WITH VIN 185138 AND BELOW AND WITH TRANSFER CASES BUILT BEFORE MAY 7, 1999 MAY EXHIBIT A TRANSMISSION DEFAULT TO SECOND GEAR, ERRATIC SHIFTING, FAILURE OF THE SPEEDOMETER AND DIAGNOSTIC TROUBLE CODE P1871. *TT |
| 610039 | SOME 1996 - 1999 VIN Z VEHICLES MAY EXHIBIT A NO START, STALL OR A DIAGNOSTIC TROUBLE CODE P1216 (REPLACE FUEL SOLENOID DRIVER) CURRENT OR IN HISTORY. *TT |
| 608158 | INFORMATION REGARDING THE NEW SERVICE PART FUEL INJECTION PUMP ASSEMBLY CONTAINS INTERNAL CHANGES FROM PREVIOUS MODEL YEAR PUMPS. *TT |
| 607698 | INFORMATION CONCERNING INJECTION TIMING STEPPER MOTOR. *AK |
| 601464 | INFORMATION ON THE CRANKSHAFT BEARING CAP TORQUE CHANGE. *YC |
| 600997 | SUBJECT ON WHEEL ALIGNMENT POLICY. *YC |
| 600943 | SUBJECT ON CYLINDER HEAD TORQUE SEQUENCE CHANGE. ALL VIN Y AND Z VEHICLES. *YC |
| 600205 | VEHICLES MAY HAVE OUTBOARD FRONT SEAT SIDE PLATES THAT COME LOOSE WHEN OCCUPANTS EXIT THE VEHICLE. A SIDE PLATE RETAINER KIT P/N 05744877 TO SERVICE TWO FRONT SEATS IS AVAILABLE THROUGH THE DCS. *TT |
| 600203 | SUBJECT ON REVISED HALFSHAFT MOUNT BOLT TORQUE SPECIFICATION. *TT |
| 600202 | SUBJECT ON WINCH KIT- FRONT SPRINGS. *YC |
| 10007968 | WINCH CONTROL PACK. *MJ |
NHTSA manufacturer communications (public domain)
NHTSA investigations
LOW TRANSFER CASE LUBRICANT
NHTSA Office of Defects Investigation