400 Commonwealth Drive, Warrendale, PA 15096-0001 U.S.A. Tel: (724) 776-4841 Fax: (724) 776-5760 SAE TECHNICAL PAPER SERIES 2001-01-2705 GM’s New Silverado and Sierra Heavy Duty Truck with the Duramax 6600 Diesel Powertrain John C. Haraf and M. Mark Moussa General Motors Corporation International Truck and Bus Meeting and Exhibition Chicago, Illinois November 12-14, 2001Downloaded from SAE International by University of British Columbia, Thursday, August 02, 2018The appearance of this I SSN code at the bottom of this page indicates SAE’s co nsent that copies of the paper may be made for personal or internal use of spec ific clients. This consent is given on the condition, however, that the copier pay a per article copy fee through the Copyright Clearance Center, Inc. Operations Center, 222 Rosewood Drive, Danvers, MA 01923 for copying beyond that permitted by Sections 107 or108 of the U.S. Copyright Law. This consent does not extend to other kinds of copying such as copying forgeneral distribution, for advertising or promotional purposes, for creating new collective works, or forresale. Quantity reprint rates can be obtained from the Customer Sales and Satisfaction Department.To request permission to reprint a technical paper or permission to use copyrighted SAE publications in other works, contact the SAE Publications Group. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior wr itten permission of the publisher. ISSN 0148-7191 Copyright © 2001 Society of Automotive Engineers, Inc. Positions and opinions advanced in this paper are those of the author(s) and not necessarily those of SAE. The author is solely responsible for the content of the paper. A process is available by whic h discussions will be printed with the paper if it is p ublished in SAE Transactions. For permission to publish this paper in full or in part, contact the SAE Publications Group. Persons wishing to submit papers to be c onsidered for presentation or publication thr ough SAE should send the manuscript or a 3 00 word abstract of a proposed manuscript to: Secretary, Engineering Meetings Board, SAE. Printed in USAAll SAE papers, standards, and selected books are abstracted and indexed in theGlobal Mobility DatabaseDownloaded from SAE International by University of British Columbia, Thursday, August 02, 2018 2001-01-2705 GM’s New Silverado and Sierra Heavy Duty Truck with the Duramax 6600 Diesel Powertrain John C. Haraf and M. Mark Moussa General Motors Corporation Copyright © 2001 Society of Automotive Engineers, Inc. ABSTRACT Vehicle requirements are measurable and define the performance of a system and its design constraints. Requirements are developed and translated from the voice of the buying customer, the voice of the government, and the voice of General Motors. Duramax powertrain subsystem requirements are developed from the vehicle requirements. This “flow down” approach optimizes the vehicle as a system. The packaging envelope, common interfaces, and manufacturing impacts were the outcome of the Vehicle Portfolio Development Process. Project execution was a global development process executed by Isuzu Engineers in Japan, Allison Automatic Tr ansmission Engineers in Indianapolis, ZF Manual Transmission Engineers in Detroit, and General Motors Engineers in Detroit. The vehicle integration required analysis, design, and development to achieve the po wertrain specifications as defined within the fundamentals of packaging, cost, dependability, emissions, noise and vibration, acceleration, drive quality, and fuel economy. INTRODUCTION General Motors’ new full-size pickup truck design introduced in the 1999 model year has proven very successful in the light-dut y truck marketplace. The heavy-duty version of these pi ckup trucks (Chevrolet Silverado and GMC Sierra) transition to this new design in the 2001 model year