Chevy/GM Allison)( Generations I-II- 2000-Up Rebuild ATSG Tech Manual 120 pages Standard Paperback Book Design (not pocket guide) Start your rebuild here... This is a very well illustrated manual with valuable information on the tolerances that the Allison requires. It is the manual all the shops use; if you are planning on rebuilding your transmission yourself I would highly recommend owning one. It is extremely easy to follow and has useful illustrations. Start your rebuild out right with the information this manual provides it will guarantee a successful rebuild! This manual covers: Clutch and Solenoid Application Chart, Transmission Identification Tag Information, General Description and Operation, Electrical Operation, Throttle Position Sensor, Neutral Start Back Up Switch, Transmission Control Module Connector Identification, Diagnostic Trial Code Identification, Solenoid Identification and Operation, Internal Wiring Harness Schematic and Resistance Chart, External Wiring Harness Schematic and Terminal Identification, Pressure Switch Assembly Identification, Retrieving Diagnostic Trouble Codes, Line Pressure Tests, Bell Housing Oil Passage Identification, Main Case “Front” Oil Passage Identification, Main Case “Rear” Oil Passage Identification, Oil Pump Cover Oil Passage Identification, Shift Valve Body Oil Passage Identification, Main Valve Body “Top View” Oil Passage Identification, Main Valve “Bottom View” Identification, Transmission Disassembly Process, Component Rebuild: Transmission Case Assembly, Oil Pump and Bell housing Assembly, Four Different Bell Housing Identification,C1/C2 Clutch Housing Assembly, C1/C2 Clutch Housing Snap Ring Identification, Valve Body Assembly, Solenoid Air Checks, Extension Hosing Assembly, Gear Train Parts, Case Clutch Parts, Case Clutch Parts. Final Transmission Assembly Process, Bolt Identification Chart, Torque Specification Chart. If you have any questions, feel free to call us or send us a message. If you need a rebuild kit or parts for your Allison rebuild please see our store or ask us we will be glad to accomodate all of your part needs.