Product Details

Automatic Transmission Service Group - ATSG Techtran rebuild manual

Product specifics:

• ATSG part number: 8L90
• Book type: Rebuild and overhaul
• Covered models: 8L90, 8L45, 8L90E, 8L45E Hydra-Matic, 8 speed automatic
• Makes: Cadillac, Chevrolet, GMC, GM
• Transmission RPO: M5N, M5T, M5U, M5X
• Year range: 2014-up
• Format: Paperback
• Pages: 138
• UPC: 858840006061
• Country of origin: USA
• Copyright date: 2018

This book contains detailed information regarding the following:

• Assembly and disassembly procedures
• Bushing locations
• Checkball locations
• Clutch clearance specifications
• Electrical volt and ohms information
• Endplay check and recommendations
• Line pressure check procedures and specs
• Recommended tools list – Not all required
• Thrust washer locations
• Torque specifications
• Torrington bearing locations
• Transmission model application codes
• Trouble codes and fixes
• Trouble shooting
• Valve body assembly detail for valves and springs
• Much more….

Covered vehicle models:

Cadillac:

• ATS, 2.0L, 3.6L, 2015-2018
• CT6, 2.0L, 3.0L, 3.6L, 2016-2018
• CTS, 2.0L, 3.6L, 2015-2018
• CTS-V, 6.2L, 2015-2018
• Escalade, 6.2L, 2015-2018

Chevrolet:

• Camaro, 2.0L, 3.6L, 6.2L, 2015-2018
• Colorado, 2.8L, 3.6, 2015-2018
• Corvette, 6.2L, 2014-2018
• Silverado, 5.3L, 6.2L, 2014-2018
• Express van, 2.8L Diesel, 2017-2018

GMC:

• Canyon, 2.8L, 3.6L, 2016-2018
• Sierra, 5.3L, 6.2L, 2014-2016
• Savana van, 2.8L Diesel, 2017-2018
• Yukon, 6.0L, 6.2L, 2014-2018

HYDRAMATIC 8L90 Manual - The 8L90E transmission is a fully automatic eight speed rear wheel drive transmission that is available in both two and four wheel drive configurations. It features clutch to clutch shifting which provides eight forward and one reverse gear. It also uses a four element lockup torque converter, four planetary gear sets as well as five multiple disc and one mechanical clutch set. The 8L90 utilizes an off axis chain drive pump to maintain fluid volume and operating pressures. The externally located TCM controls the changing of gear ratios through the use of solenoids and also controls transmission line pressure through the use of a variable force motor. The TCM will also control converter clutch operation. The 8L90 has undergone some parts changes from its inception until the present. Some of those changes are indicated in this manual and some are not.

This manual will address the disassembly and assembly procedures for the 8L90 and is intended for use by the professional technician. 

ATSG produces the overhaul books that transmission mechanics; both professional and DIY, have looked to since 1985.

Automatic Transmission Service Group (ATSG) is the largest technical support service in the automatic transmission Industry. ATSG manuals are the world's foremost service guides utilized by professionals and technicians to troubleshoot and diagnose problematic areas, disassemble transmissions and reassemble accurately and efficiently. ATSG manuals cover all aspects of transmission care, overhaul and rebuild procedures. Straightforward and simple to use, ATSG manuals will assist professionals and non-professionals alike with all aspects of automotive transmission care.