SYCLONE, TYPHOON,
AND SONOMA GT
SERVICE MANUAL
This service manual supplement contains diagnosis, on-vehicle maintenance, and light repair
for Syclone, Typhoon, and Sonoma GT Models, when used with the 1992 Service Manual for
Sonoma and Jimmy Models. Procedures involving disassembly and assembly of major
components for these vehicles are published in the Light Duty Truck Unit Repair Manual.
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.
When reference is made in this manual to a brand name, number, or specific tool, an
equivalent product may be used in place of the recommended item.
All information, illustrations, and specifications contained in this manual are based on the
latest product information available at the time of publication approval. The right is reserved to
make changes at any time without notice.
NOTICE: When fasteners are removed, always reinstall them at the same location from which they were removed. If
a fastener needs to be replaced, use the correct part number fastener for that application. If the correct part number
fastener is not available, a fastener of equal size and strength (or stronger) may be used. Fasteners that are not
reused, and those requiring thread locking compound will be called out. The correct torque value must be used
when installing fasteners that require it. If
result.
X-9276
©1991 General Motors Corporation
Printed in U.S.A.
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.
1 9 9 2
SUPPLEMENT
FOREWORD
above conditions are not followed, parts or system damage could
the
GMC TRUCK DIVISION
TRUCK & BUS GROUP
General Motors Corporation
Pontiac, Michigan
iii
June 1991
All rights reserved
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