This document, which is intended as a guide for work force preparation program providers, details the Illinois occupational skill standards for programs preparing students for employment in occupations in the automotive technician cluster. The document begins with overviews of the Illinois perspective on occupational skill standards and credentialing, the process used to develop the skill standards, and assumptions underlying the standards. Presented next are skill standards for 68 tasks performed by automotive technicians. Each skill standard statement contains the following components: (1) the actual skill standard (including the conditions of performance, work to be performed, and performance criteria); (2) performance elements and assessment criteria; and (3) a recommended assessment and credentialing approach. The 68 tasks covered are all related to diagnosing, repairing, and maintaining the following automotive systems and components: engines; automatic transmissions and transaxles; manual drive trains and axles; suspensions and steering; brakes; electrical/electronic equipment; and heating and air conditioning. The following items are appended: glossary; list of Illinois Occupational Skill Standards and Credentialing Council members; list of Transportation, Distribution, and Logistics Subcouncil members; list of Mechanical Drafting Cluster Standards Development Committee members; Transportation, Distribution, and Logistics Subcouncil Automotive Technician Cluster skill standards recognition proposal; and list of necessary workplace skills. (MN)