This book introduces the automatic transmission/gear drive bridge of General Motors Company's 1994-1998 models, including: 4T60-E and 4T65-E automatic transmission drive bridge and 4L60-E automatic transmission maintenance methods. Contents include general knowledge of the system, maintenance knowledge, adjustment of various control devices, testing of various sensors and actuators and system testing, fault diagnosis programs and methods, testing of various sensors and actuators and system testing, fault diagnosis programs and Methods and related fault codes, troubleshooting methods, disassembly and repair of automatic transmission/gear drive bridge. Equipped with a large number of charts, the content is detailed, practical and comprehensive, the description is concise and easy to understand, and it is a must-have tool for general Motors automatic transmission/gear drive bridge maintenance personnel, and it is also a rare reference book for relevant professionals to understand foreign automotive automatic transmission technology.