GM Chevrolet 4T60-E Rebuild ATSG Tech Manual 1987-1993 120 pages Standard Paperback Book Design (not pocket guide) Start your rebuild here... This is a very well illustrated manual with valuable information on general description and the procedures necessary to repair, overhaul, or service the new THM 4T60E electronic automatic overdrive transmission. 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! Introduction: This booklet contains the procedures necessary to overhaul, repair or service the THM 4T60-T Transaxle. The THM 4T60-E is a fully automatic front wheel drive transaxle that provides park, reverse, neutral and four forward speeds, with 4th Gear being overdrive The shift pattern is controlled electronically with solenoids that receive a ground signal from the powertrain control module (PCM. The PCM will vary shift points, as it is constantly interpreting numerous electronic signals from the various operation sensors located on the vehicle. The PCM also controls the application of the Torque Converter Clutch and the TCC apply Feel electronically with solenoids. Lin pressure and shift feel are still controlled by the vacuum modulator system