400 Commonwealth Drive, Warrendale, PA 15096-0001 U.S.A. Tel: (724) 776-4841 Fax: (724) 776-5760 SAE TECHNICAL PAPER SERIES 1999-01-3744 Vocational and Body Builder Controls Features of the Allison 1000/2000/2400 Series™ Automatic Transmission Richard J. Koenig and John D. Hylto General Motors Cor International Truck & Bus Meeting & Exposition Detroit, Michigan November 15-17, 1999Downloaded from SAE International by Univ of California Berkeley, Friday, July 27, 2018The appearance of this ISSN code at the bottom of this page indicates SAE’s consent that copies of the paper may be made for personal or internal use of specific clients. This consent is given on the condition,however, that the copier pay a $7.00 per article copy fee through the Copyright Clearance Center, Inc.Operations Center, 222 Rosewood Drive, Danvers, MA 01923 for copying beyond that permitted by Sec-tions 107 or 108 of the U.S. Copyright Law. This consent does not extend to other kinds of copying such ascopying for general distribution, for advertising or promotional purposes, for creating new collective works,or for resale. SAE routinely stocks printed papers for a period of three years following date of publication. Direct your orders to SAE Customer Sales and Satisfaction Department. 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 it t e n permission of the publisher. ISSN 0148-7191 Copyright 1999 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 which 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 considered for presentation or publication through 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 Univ of California Berkeley, Friday, July 27, 20181 1999 01-3744 Vocational and Body Builder Controls Features of the Allison 1000/2000/2400 Series™ Automatic Transmission Richard J. Koenig and John D. Hylton General Motors Corp Copyright © 1999 Society of Automotive Engineers, Inc. ABSTRACT Light and Medium Duty Trucks (N.A. Classes 2-7) make up of a wide variety of vehicle configurations. Thesevehicles, in addition to providing the basic hauling needsof the industry, also provide distinct operational featuresdictated by the vocation they serve. This results inadditional auxiliary equipment and control features beingemployed. The control system for Allison Transmission’s new 1000/ 2000/2400 Series™ transmission was designed to satisfythe many requirements of this complex market. Thispaper will describe these features and how they interactwith various control aspects of the vehicle. Also, futurecontrol features will be discussed. INTRODUCTION NEW PRODUCT INTRODUCTION – The 1000/2000/2400 Series™ transmission is the latest new productoffering from Allison Transmission Division of GeneralMotors. Production began on June 1, 1999 after fouryears of development. The transmission is a fullyautomatic electronically controlled 5-speed transmissionwith one overdrive ratio, one reverse ratio and converterclutch available in the top four ratios. MARKET – The transmission is intended for vehicles ranging from heavy duty one-ton pickup trucks to 30,000lb. GVW medium duty on-highway