General Motors, GM, GMC, CHEVROLET, the GM Emblem, the GMC Truck Emblem, the CHEVROLET Emblem, and the names SIERRA, SILVERADO, SAVANA and EXPRESS are registered trademarks of General Motors Corporation.

This manual contains information that pertains to the operation of your diesel engine. It also contains your Diesel Maintenance Schedule. The sections in this manual correspond to the sections in your owner manual. This manual, along with your owner manual, will assist you in the proper use and maintenance of your vehicle.

Keep this manual with the owner manual in your vehicle, so it will be there if you ever need it while you are on the road. If you sell your vehicle, leave this manual and the owner manual with the vehicle.

This manual includes the latest information at the time it was printed. We reserve the rights to make changes in the product after that time without notice.

Litho U.S.A. © 2006 General Motors Corporation.

Part Number All Rights Reserved

GENERAL MOTORS, GM, the GM Emblem, CHEVROLET, the CHEVROLET Emblem, and the name CHEVY EXPRESS are registered trademarks of General Motors Corporation.

This manual includes the latest information at the time it was printed. GM reserves the right to make changes after that time without further notice. For vehicles first sold in Canada, substitute the name "General Motors of Canada Limited" for Chevrolet Motor Division wherever it appears in this manual.

This manual describes features that may or may not be on your specific vehicle.

If the vehicle has the DURAMAX® Diesel engine, refer to the DURAMAX® Diesel supplement for additional and specific information on this engine.

Read this manual from beginning to end to learn about the vehicle's features and controls. Pictures, symbols, and words work together to explain vehicle operation.

Keep this manual in the vehicle for quick reference.