1999 GMC Sonoma Service and Repair Manual

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Factory-Grade Data

1999 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

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Vehicle Safety Data

1999 GMC Sonoma Recalls & Complaints

NHTSA #07E02100012/03/2007Component: FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES

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

Consequence

FUEL MAY LEAK, POSSIBLY RESULTING IN A FIRE.

Remedy

DELPHI WILL NOTIFY OWNERS AND REPLACE THE UPR FREE OF CHARGE. THE RECALL BEGAN ON APRIL 23, 2007.

TSB #10237648

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

TSB #10232287

This warranty administration bulletin provides information regarding the field action courtesy transportation policy.

TSB #10211764

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

TSB #10208027

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

TSB #10190934

Underbody Component Corrosion The following information may be helpful when addressing underbody component corrosion with customers. Some customers may comment that one or more of their vehicle's underbody components are showing some form o

TSB #10190933

Underbody Component Corrosion The following information may be helpful when addressing underbody component corrosion with customers. Some customers may comment that one or more of their vehicle's underbody components are showing some form o

TSB #10190932

Refinishing Aluminum Wheels This bulletin updates General Motor's position on refinishing aluminum wheels. GM does not endorse any repairs that involve welding, bending, straightening o re-machining. Only cosmetic refinishing of the wheel's

TSB #10190931

Refinishing Aluminum Wheels This bulletin updates General Motor's position on refinishing aluminum wheels. GM does not endorse any repairs that involve welding, bending, straightening o re-machining. Only cosmetic refinishing of the wheel's

Showing the 8 most recent of 71 technical service bulletins on file with NHTSA.

20171228Component: AIR BAGSCrash reported1 injured

TL* THE CONTACT OWNED A 1999 GMC SONOMA. WHILE DRIVING 5 MPH ON A FLOODED DIRT ROAD, THE CONTACT CRASHED INTO A DITCH. AFTER THE CRASH, THE VEHICLE CAME TO A COMPLETE STOP. THE AIR BAG DEPLOYMENT WAS

20000324Component: AIR BAGS:FRONTALCrash reported1 injured

VEHICLE STRUCK THE REAR OF ANOTHER VEHICLE AT 35MPH, NEITHER DRIVER'S SIDE NOR PASSENGER'S SIDE AIR BAG DEPLOYED. MANUFACTURER HAS BEEN CONTACTED. *AK

19991206Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITEDCrash reported1 injured

THE ACCIDENT THAT HAPPENED IN OCTOBER WASN'T REPORTED BECAUSE IT WAS A SINGLE VEHICLE ACCIDENT AND THE PAVEMENT WAS WET. I FIGURED IT WAS MY FAULT AND NOT THE BRAKES. AT THE SECOND ACCIDENT, THE PAV

19990617Component: AIR BAGS:FRONTALCrash reported1 injured

WHILE DRIVING AT 10 MPH CONSUMER WAS HIT HEAD-ON BY ANOTHER VEHICLE ON DRIVER'S SIDE. UPON IMPACT, DRIVER'S SIDE AND PASSENGER'S SIDE AIR BAGS DIDN'T DEPLOY. DRIVER SUSTAINE D LOWER BACK INJURY.

20031028Component: AIR BAGS:FRONTALCrash reported

WHILE DRIVING 65 MPH CONSUMER HIT A COW IN THE ROAD, AND THE AIR BAGS DID NOT DEPLOY. TOOK VEHICLE TO DEALERSHIP, WHERE THE MECHANIC HAD NOT RESOLVED THE PROBLEM.*AK

Showing the 5 most serious of 78 complaints filed with NHTSA.

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