1998 GMC Sonoma Service and Repair Manual
1998 GMC Sonoma 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
- SLE Extended Cab Pickup 3-Door
- SLS Extended Cab Pickup 3-Door
- SLS Extended Cab Pickup 2-Door
- SLE Extended Cab Pickup 2-Door
- SL Standard Cab Pickup 2-Door
- SLS Standard Cab Pickup 2-Door
- SLE Standard Cab Pickup 2-Door
Engines covered
- 2.2L 2190CC 134Cu. In. l4 GAS OHV Naturally Aspirated
- 4.3L 262Cu. In. V6 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
VEHICLE DESCRIPTION: LIGHT DUTY PICKUP TRUCKS AND MULTI-PURPOSE VEHICLES. AN ENGINE ELECTRICAL WIRING-HARNESS CLIP CAN MELT AND DRIP ONTO THE EXHAUST MANIFOLD.
THE CLIP MATERIAL ON THE EXHAUST MANIFOLD CAN IGNITE AND SUBSEQUENTLY IGNITE OTHER COMBUSTIBLE COMPO
DEALERS ARE CONTACTING OWNERS BY TELEPHONE TO HAVE THEIR VEHICLES TOWED TO THE DEALER AND ALTERNATE
VEHICLE DESCRIPTION: LIGHT DUTY PICKUP TRUCKS AND MULTI-PURPOSE PASSENGER VEHICLES. A FATIGUE FRACTURE OF THE REAR AXLE RIGHT-HAND BRAKE PIPE CAN OCCUR CAUSING A SLOW BRAKE FLUID LEAK RESULTING IN A
PARTIAL LOSS OF BRAKING AT A TIME WHEN MINIMUM STOPPING DISTANCE WAS REQUIRED COULD RESULT IN A VEHI
DEALERS WILL INSPECT AND REPLACE THE BRAKE PIPE.
CERTAIN DELPHI FUEL PRESSURE REGULATORS, P/NOS. FP10020-11B1, FP10026-11B1, AND FP10027-11B1, SOLD AFTER JANUARY 9, 2007, AS AFTERMARKET EQUIPMENT FOR VARIOUS PASSENGER VEHICLES LISTED ABOVE. THE UNI
FUEL MAY LEAK, POSSIBLY RESULTING IN A FIRE.
DELPHI WILL NOTIFY OWNERS AND REPLACE THE UPR FREE OF CHARGE. THE RECALL BEGAN ON APRIL 23, 2007.
VEHICLE DESCRIPTION: LIGHT DUTY PICKUP TRUCKS AND SPORT UTILITY VEHICLES. THESE VEHICLES FAIL TO COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT."
THESE VEHICLES DO NOT COMPLY WITH REQUIREMENTS OF FMVSS NO. 108.
DEALERS WILL INSTALL A REVISED WIRING HARNESS THAT CHANGES THE DRL'S FROM HIGH BEAM TO LOW BEAM DRL'
This Preliminary Information communication provides information to the technician about vehicles that may have slack in one of the tailgate cables. Technician should not replace any parts for this concern. Please communicate to the customer
This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
This Preliminary Information communication provides information to the technician about vehicles that may have slack in one of the tailgate cables. Technician should not replace any parts for this concern. Please communicate to the customer
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and
THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLE THAT AFTER A TRANSMISSION OR TORQUE CONVERTER REPLACEMENT THE VEHICLE MAY HAVE A HARSH 1-2 UPSHIFT AND THE CHECK ENGINE LIGHT OR SERVICE ENGINE
Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
CLUNK NOISE FELT THROUGH THE FLOOR PAN. *KB
Showing the 8 most recent of 55 technical service bulletins on file with NHTSA.
WHILE DRIVING 20MPH DRIVER APPLIED BRAKES AND THE VEHICLE DID NOT STOP. CONSUMER REAR ENDED ANOTHER VEHICLE. NEITHER DRIVER'S SIDE NOR PASSENGER'S SIDE AIRBAGS DEPLOYED. DEALER SAID IT WAS NORMAL. D
WHILE DRIVING 20MPH DRIVER APPLIED BRAKES AND THE VEHICLE DID NOT STOP. CONSUMER REAR ENDED ANOTHER VEHICLE. NEITHER DRIVER'S SIDE NOR PASSENGER'S SIDE AIRBAGS DEPLOYED. DEALER SAID IT WAS NORMAL. D
DRIVER WAS GOING APPROX. 40MPH DOWN THE RURAL HIGHWAY IN HEAVY RAIN AND THE TRUCK IN FRONT OF HER CAME TO A STOP. BY THE TIME THE DRIVER OF THE SONOMA SAW THE TRUCK IT WAS TOO LATE TO STOP AND NOT HIT
DRIVER WAS GOING APPROX. 40MPH DOWN THE RURAL HIGHWAY IN HEAVY RAIN AND THE TRUCK IN FRONT OF HER CAME TO A STOP. BY THE TIME THE DRIVER OF THE SONOMA SAW THE TRUCK IT WAS TOO LATE TO STOP AND NOT HIT
DRIVER WAS GOING APPROX. 40MPH DOWN THE RURAL HIGHWAY IN HEAVY RAIN AND THE TRUCK IN FRONT OF HER CAME TO A STOP. BY THE TIME THE DRIVER OF THE SONOMA SAW THE TRUCK IT WAS TOO LATE TO STOP AND NOT HIT
Showing the 5 most serious of 202 complaints filed with NHTSA.
