1989 X8937 GMC Light Duty Truck Unit Repair Manual – PDF DOWNLOAD
DESCRIPTION:
1989 X8937 GMC Light Duty Truck Unit Repair Manual – PDF DOWNLOAD
FOREWORD
- This manual includes procedures involved in disassembly and assembly of components listed in the “ Table of Contents.” This manual should be kept in a handy place for ready reference. If properly used, it will meet the needs of technicians and vehicle owners. CAUTION: These vehicles contain some parts dimensioned in the metric system as well as in the customary system. Some fasteners are metric and are very close in dimension to familiar customary fasteners in the inch system. It is important to note that, during any vehicle maintenance procedures, replacement fasteners must have the same measurements and strength as those removed, whether metric or customary.
- (Numbers on the heads of metric bolts and on surfaces of metric nuts indicate their strength. Customary bolts use radial lines for this purpose, while most customary nuts do not have strength markings.) Mismatched or incorrect fasteners can result in vehicle damage or malfunction, or possibly personal injury. Therefore, fasteners removed from the vehicle should be saved for re-use in the same location whenever possible. Where the fasteners are not satisfactory for re-use, care should be taken to select a replacement that matches the original. For information and assistance, see your authorized dealer.
- No part of this publication may be reproduced, stored in any retrieval system or transmitted, in any form or by any means, including but not limited to electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of the GMC Truck Division of General Motors Corp. This includes all text, illustrations, tables and charts.
SERVICE PARTS IDENTIFICATION LABEL
The Truck Service Parts Identification Label is provided on all models (figure 1). It is located on the inside of the glove box door (or on an inner body panel for Forward Control models). T he Label lists the VIN (V eh ic le Identification Number), wheelbase, paint information and all Production options or Special Equipment on the vehicle when it was shipped from the factory. ALWAYS REFER TO THIS INFORMATION WHEN ORDER ING PARTS.
VEHICLE IDENTIFICATION NUMBER The VIN is the legal identifier of the vehicle. On all models except Forward Control, it is located on a plate which is attached to the left top of the instrument panel and can be seen through the windshield from the outside of the vehicle (figure 2). On Forward Control models, the plate is on the dash and toe panel. To find out the manufacturer, model and chassis type, engine type, GVW range, model year, plant code, and sequential number, refer to figure 3.
CERTIFICATION LABEL The Certification Label shows the GVWR, and the front and rear GAWRs, and the Payload Rating for your vehicle (figure 4). Gross Vehicle Weight (GVW) is the weight of the orginally equipped vehicle and all items added to it after-it has left the factory. This would include bodies, winches, booms, etc.; the driver and all occupants; and the load the vehicle is carrying. The GVW must not exceed the GVWR. Also, the front and rear gross axle weights must not exceed the front and rear GAWRs. The Payload Rating shown on the label is the maximum allowable cargo load (including the weight of the driver and all occupants) that the vehicle can carry based on all factory installed equipment on the vehicle. The Payload Rating is reduced if any accessories or other equipment is added to the vehicle after final date of manufacture. The weight of these items should be determined and deducted from the Payload Rating. T h e v e h ic le may a so have a G CW R (G ro s s C om b in a tio n W e ig h t R a tin g ). T h e G CW (G ro s s Combination Weight) is the total weight of the loaded tow vehicle (including passengers) and a loaded trailer. The tires on the vehicle must be the proper size and properly inflated for the load which you are carrying. The vehicle Certification Label shows the originally equipped tire size and recommended inflation pressures.
TABLE OF CONTENTS:
1989 X8937 GMC Light Duty Truck Unit Repair Manual – PDF DOWNLOAD
SUBJECT PAGE
Service Parts Identification L a b e l………………………………………………………………………………………………………………………OA- 1
Vehicle Identification Plate………………………………………………………………………………………………………………………………….OA- 1
Certification L ab e l………………………………………………………………………………………………………………………………………………..OA- 1
Engine Identification Number………………………………………………………………………………………………………………………………OA- 2
Model Reference…………………………………………………………………………………………………………………………………………………. OA- 2
Metric Fasteners…………………………………………………………………………………………………………………………………………………. OA- 2
Fastener Strength Identification………………………………………………………………………………………………………………………….OA- 3
Six Lobed Socket Head Fasteners…………………………………………………………………………………………………………………….. OA- 4
Prevailing Torque Fasteners………………………………………………………………………………………………………………………………..OA- 4
Conversion Table…………………………………………………………………………………………………………………………………………………. 0A-10
Decimal and Metric Equivalents………………………………………………………………………………………………………………………….OA-11
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