1991 GMC Sierra Jimmy Suburban Van Fuel & Emissions Shop Service Manual

1991 GMC Light Duty Truck Fuel and Emissions Service Manual

Fuel Injected Gasoline Engines for the following:

• GMC C1500 Sierra, C2500 Sierra, C3500 Sierra, K1500 Sierra, K2500 Sierra, K3500 Sierra
• GMC G1500, G2500, G3500 Vans (Rally, Vandura, Magnavan)
• GMC Full Size Jimmy 
• GMC P3500 (Value Van, Forward Control Chassis, Motorhome Chassis, PG Cutaway Chassis)
• GMC R1500 Suburban, R2500 Suburban, R3500 Pickup, R3500 Cab & Chassis, V1500 Suburban, V2500 Suburban, V3500 Pickup
• GMC S-15 Jimmy
• GMC Safari Van
• GMC Sonoma
• GMC Syclone
• 2.5 L4, 2.8L V6, 4.3L V6, 5.0L V8, 5.7L V8 & 7.4L V8 Gasoline Engines

Published by the General Motors Corporation

Drivability Symptoms * Control Module Systems * Fuel Systems * Evaporative Emission Control System * Ignition System * Knock Sensor System * EGR Valves * Transmission Controls * Crankcase Ventilation * Air Intake System * Special Tools

This is the Official Service Manual that the dealers and shops use, written by GM specifically for the vehicle(s) listed. This ensures you get the job done right the first time. It is incredibly comprehensive with detailed diagrams and exploded views. This is the best money can buy and a must for anyone who insists on Genuine OEM quality parts.
11" x 8.5" x 1". Approx. 500 pages.

Available Conditions

• Very good condition. Covers show very little wear. All pages are in place and straight. Page surfaces are clean.
• Good usable condition. Covers show some soiling. All pages are in place and straight. Paged edges are lightly soiled. Page surfaces are mostly clean.

Table of Contents

• Drivability Symptoms
• Computer Command Control
• Fuel Control
• Evaporative Emission Control
• Ignition System/EST
• Electronic Spark Control
• Air Management
• Exhaust Gas Recirculation
• Transmission Controls
• Positive Crankcase Ventilation
• Thermostatic Air Cleaner
• Special Tools and Specifications