Volume 1

Foreword

This manual provides information on the diagnosis, the service procedures, the adjustments, and the specifications for the 2003 Chevrolet Silverado and Avalanche, GMC Sierra and Denali XL, and Cadillac Escalade EXT pickup trucks. Information on transmission unit repair (overhaul) can be found in the 2003 Transmission/Transaxle/Transfer Case Unit Repair Manual (TURM), available separately. The TURM contains information on automatic and manual transmissions, including the fluid flow and circuit description information.

The technicians who understand the material in this manual and in the appropriate Dealer Service Bulletins better serve the vehicle owners.

When this manual refers to a brand name, a part number, or a specific tool, you may use an equivalent product in place of the recommended item. All information, illustrations, and specifications in this manual are based on the latest product information available at the time of publication approval. General Motors reserves the right to make changes at any time without notice.

Published by

North American Operations

General Motors Corporation

Warren, Michigan 48090

2002 GENERAL MOTORS CORPORATION

ALL RIGHTS RESERVED

The information cutoff date is 6/13/2002.

LITHO IN U.S.A.

No part of this manual 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, and recording) without the prior written permission of General Motors corporation. This applies to all text, illustrations, and tables.