1988 GMC Jimmy Service and Repair Manual

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Factory-Grade Data

1988 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

  • Sierra Classic Sport Utility 2-Door
  • 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

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Vehicle Safety Data

1988 GMC Jimmy Recalls & Complaints

NHTSA #06E02600023/03/2006Component: EXTERIOR LIGHTING

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

Consequence

WITHOUT THE AMBER REFLECTORS, THE VEHICLE WILL BE POORLY ILLUMINATED, POSSIBLY RESULTING IN A VEHICL

Remedy

PRO-A MOTORS WILL NOTIFY OWNERS AND OFFER TO REPURCHASE THE LAMPS. THE RECALL BEGAN ON APRIL 3, 200

TSB #10006961

POP SNAP NOISE IN THE FRONT SUSPENSION WHEN BRAKING. *MR

TSB #41072

END GATE LATCH RATTLE (INSTALL REVISED STRIKER). *TW

TSB #41076

WATER LEAK AT THE A/C RECIRCULATION DOOR (INSTALL NEW HOOD HINGE SEAL). *TW

20161110Component: AIR BAGSCrash reported1 injured

TL* THE CONTACT OWNED A 1988 GMC JIMMY. WHILE DRIVING APPROXIMATELY 35 MPH, THE CONTACT STRUCK THE FRONT PASSENGER SIDE OF ANOTHER VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS FILED. THE

19950629Component: VEHICLE SPEED CONTROLCrash reported

SUDDEN ACCELERATION, CAUSED LOSS OF CONTROL/ACCIDENT. *SKD

20150122Component: ENGINE

I HAVE HAD TO REPLACE PASSENGER SIDE HEAD 3 TIMES NOW.A FRIEND OF MINE TOLD ME THAT THEY ARE NOTORIOUS FOR CRACKING HEADS.MINE WAS BROKE IN 3 PLACES.CAN YOU HELP?? *TR

20040113Component: SEAT BELTS:REAR/OTHER

I AM AN ENGINEER. TWO OF THE REAR SEAT BELTS ON MY 1988 GMC JIMMY - FULL SIZE FAILED COMPLETELY. THE ANGLE BRACKET HAS A STEEL STRAP WHICH IS RIVETED IN PLACE TO IT AND THE TO THE END OF THE SEAT BELT

20010123Component: SEATS

DRIVER'S AND PASSENGER'S SIDE SEAT BOLTS THAT WERE ATTACHED TO FLOOR WERE DEFECTIVE. CONSUMER WAS TRAVELING AND SEAT WENT BACK WHILE DRIVING.*AK *SLC

Showing the 5 most serious of 15 complaints filed with NHTSA.

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