1989 GMC Light Duty Trucks C/K Models - Electrical Diagnosis and Wiring Diagrams Manual

Clean copy of Factory Softcover Manual with minor shelf wear.

This manual contains wiring diagrams and electrical diagnosis. Covers GMC C/K Models.

Contains the following sections:

• Introduction

• Power Distribution

• Auxiliary Battery

• Headlamps and Parking Lamps

• Fog Lamps

• Front Exterior Lamps

• Horns

• Start

• Ignition

• Fuel Controls - Gasoline

• Glow Plugs

• Diesel Engine Fuel Controls

• Auxiliary Cooling Fan

• Electronic Control Module (ECM) Gasoline

• Electronic Control Module (ECM)-Diesel

• Auto Transmission Kick down Solenoid

• Heater

• Air Conditioning

• Brake Systems

• Instrument Panel Lamps

• Safety Belt Warning Buzzer

• Four Wheel Drive Indicator

• Interior Lamps and Key-In Buzzer

• Radio

• Windshield Wipers and Washers

• Power Windows

• Power Door Locks

• Cruise Control

• Rear Exterior Lamps

• Component Locator Views

• Index