PDF-6T30/40

PDF-6T30/40 Download: 6T30 / 6T40 Rebuild/Reference Procedure

The 6T30/40 Rebuild/Reference manual, written by Bill Brayton and published by the Automatic Transmission Rebuilders Association (ATRA), is a detailed technical guide for GM's "global 6-speed" front-wheel-drive transaxles. Updated in 2021, the book provides comprehensive, step-by-step instructions for transmission disassembly and assembly, sub-assembly repair for various generations (Gen 1, 2, and 3), and component identification. It includes essential diagnostic data, such as clutch apply charts, solenoid functions, torque specifications, and air check locations. This resource is designed to help professional technicians navigate the massive control system changes introduced across the 6T30/40/45 family.