1991 GMC Jimmy service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.
What’s included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Wiring diagrams and electrical sections
- Powertrain, brakes, steering, suspension, HVAC and more
Trims covered
- Base Sport Utility 2-Door
Engines covered
- 6.2L 379Cu. In. V8 DIESEL OHV Naturally Aspirated
- 5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
THESE VEHICLES EXHIBIT A CONDITION IN WHICH A REAR SEAT BELT BUCKLE RELEASE BUTTON CAN STICK IN THE UNLATCHED (DOWN) POSITION UNDER CERTAIN CONDITIONS BECAUSE THE BUCKLE ASSEMBLY CAN MOVE INSIDE THE S
THE REAR BELTS MAY NOT HOLD AN OCCUPANT IN THE EVENT OF A VEHICLE ACCIDENT INCREASING THE RISK OF PE
DEALERS WILL REPLACE THE THREE REAR-SEAT BELT BUCKLES (ONE ASSEMBLY) WITH A NEW, REVISED DESIGN.
CERTAIN PRO-A MOTORS CORNER LAMPS, TURN SIGNALS, AND HEADLIGHTS SOLD AS REPLACEMENT LAMPS FOR USE ON CERTAIN PASSENGER VEHICLES LISTED ABOVE. SOME COMBINATION LAMPS THAT ARE NOT EQUIPPED WITH AMBER S
WITHOUT THE AMBER REFLECTORS, THE VEHICLE WILL BE POORLY ILLUMINATED, POSSIBLY RESULTING IN A VEHICL
PRO-A MOTORS WILL NOTIFY OWNERS AND OFFER TO REPURCHASE THE LAMPS. THE RECALL BEGAN ON APRIL 3, 200
VEHICLES HAVE BEEN SHIPPED WITH THE FUEL TANK SENDER SEAL OUT OF POSITION.
IN THE EVENT OF ROLLOVER ACCIDENT, AN OUT OF POSTIONSEAL COULD ALLOW FUEL SPILLAGE IN EXCESS OF THE
REPLACE SENDER SEALS.
VEHICLE DESCRIPTION: CERTAIN 4-WHEEL DRIVE PICKUP TRUCKS AND SPORT UTILITY VEHICLES EQUIPPED WITH ABS (ANTILOCK BRAKING SYSTEM) MANUFACTURED FROM SEPTEMBER 1989 THROUGH AUGUST 1996. UNDER CERTAIN D
IF THIS OCCURRED AT A TIME WHEN MINIMUM STOPPING DISTANCE WAS REQUIRED, A VEHICLE CRASH COULD OCCUR
DEALERS WILL REPLACE OR REPAIR THE 4-WHEEL/2-WHEEL DRIVE SWITCH.
USE OF IMPROPER PRIMER ON METAL SURFACES OF WINDSHIELD AND SIDE WINDOW OPENINGS COULD CAUSE LOW ADHESION TO THE METAL SURFACE AND WOULD NOT PROVIDE RETENTION REQUIRED BY FMVSS 212.
WINDSHIELD AND SIDE WINDOW GLASS WOULD NOT PREVENT THEEJECTION OF VEHICLE OCCUPANTS DURING A VEHICLE
REMOVE AND REINSTALL GLASS USING PROPER PRIMER.
POP SNAP NOISE IN THE FRONT SUSPENSION WHEN BRAKING. *MR
DIAGNOSIS OF CRACKED OR BROKEN TRANSMISSION CASE. *TT 2006 AND PRIOR CARS AND LIGHT DUTY TRUCKS. *TT
END GATE LATCH RATTLE (INSTALL REVISED STRIKER). *TW
WATER LEAK AT THE A/C RECIRCULATION DOOR (INSTALL NEW HOOD HINGE SEAL). *TW
COLD ENGINE KNOCK. *TW
OIL PRESSURE GAUGE READING CONCERNS. *TW
WHILE DRIVING TRIED TO MAKE A SUDDEN STOP. PRESSED THE BRAKE PEDAL TO THE FLOORBOARD VEHICLE CONTINUED TO STILL TRAVEL, CONSUMER HIT A WALL. *AK
WHEN APPLYING THE BRAKES THE PEDAL WENT TO THE FLOOR, AND VEHICLE REAR ENDED ANOTHER VEHICLE AT 3 MILES PER HOUR. DEALER HAS NOT SEEN. *AK
TL* THE CONTACT OWNS A 1991 GM JIMMY. WHILE DRIVING IN A 35 MPH ZONE THE CONTACT ENGAGED THE BRAKES AND THE VEHICLE DID NOT STOP AND REAR ENDED ANOTHER VEHICLE. THE PASSENGER WAS INJURED AND TAKEN
ICY CONDITIONS, USED BRAKES TO SLOW DOWN AND REAR END BEGAN TO SLIDE. HIT GUARDRAIL, WENT INTO DITCH AND ROLLED OVER. I CONTACTED GMC WHEN I HEARD OF RECALL AND WAS INFORMED DECISION WAS BEING APPEAL
BRAKES FAILED TO STOP ME FROM REARENDING ANOTHER VEH. SLID INTO THEM.
Showing the 5 most serious of 139 complaints filed with NHTSA.
