Finding an Automatic Transmission Repair Manuals and books can be the hardest part of an Automatic Transmission Repair. These Transmission Repair Manuals are well illustrated and are easy to read from Automatic Transmission Service Group (ATSG)

The typical manual is 80 to 120 pages long and in addition to detailed tear down and assembly instructions will include valuable information such as test procedures, diagnostic information, oil pressure and range reference charts, wiring and hydraulic diagrams, checkball and thrust washer locations, torque and end play specifications, electronic controls, operations, and special tools if needed.

Up-Date Handbook
up-dates do not include identification, tear down or Diagnosis on the whole transmission
But they do include identification, tear down or Diagnosis on the parts they cover and are extremely important if you have a newer transmission in the fitments years ( if a manual covers 69-86, and you have a 82 or newer the update is suggested)

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ATSG

ATSG 121400 Allison (Generation I-II) 1000/2000 Transmission Manual

Part #: 121400

Allison (Generations I-II) 1000/2000 Transmission found in 2000 and up C and K Series trucks.

ASTS 6T70 / 6T75 (6 Speed) Hydra-matic Transmission Repair Manual

Part #: 124400

Hydra-matic 6T70 / 6T75 (6 Speed) fully automatic, six speed, front wheel drive, electronically controlled transmission.

ATSG 24400E GM 4L30E Transmission Repair Manual

Part #: 24400E

GM 4L30-E Transmission is found in Cadillac Catera, Honda Passport, Isuzu and BMW. Covers transmission assembly, dis-assembly, diagnosis, troubleshooting, and electronic controls & operation.

ATSG 34400 1969-85 GM TH400 Transmission Repair Manual

Part #: 34400

GM THM 400 Transmission found in many 1969-1985 GM domestic vehicles. Covers assembly, dis-assembly, diagnosis, and troubleshooting.

ATSG 34400E 1991-Up GM 4L80E Transmission Repair Manual

Part #: 34400E

THM 4L80-E Transmission found in Trucks and vans, 1991-UP. Covers transmission assembly, dis-assembly, diagnosis, troubleshooting, and Electronic Controls & Operation.

ATSG 44400 1969-86 GM TH350C Transmission Repair Manual

Part #: 44400

GM TH350/350C 69 - 86 model years. an ATSG General Motors THM350C and TH350 Transmission Repair Manual or TH350 / THM350C Transmission Tech Service Manual

ATSG 54400A 1976-87 GM THM200C Transmission Repair Manual

Part #: 54400A

GM THM 200C Transmission Manual found in many 1976 to 1987 GM domestic vehicles. Covers transmission assembly dis-assembly diagnosis and troubleshooting.

ATSG 54400B 1980-89 GM THM2004R Transmission Repair Manual (Mini CD)

Part #: 54400B

GM THM 200-4R Transmission Manual. Covers transaxle assembly, dis-assembly, diagnosis, and troubleshooting.

ATSG 54400D 1979-85 GM THM325/3254L Transaxle Manual

Part #: 54400D

GM THM 325/3254L Transaxle Manual found in 1979 to 1985 Riviera Toronado and El Dorado. Covers transaxle assemble, dis-assembly, diagnosis, and troubleshooting.

ATSG 64400 GM THM3T40(125C) Transaxle Repair Manual

Part #: 64400

GM THM 3T40 (125C) Transaxle found in many GM vehicles and Opels. Covers transaxle assembly dis-assembly diagnosis and troubleshooting

ATSG 74400 1982-86 GM THM 700-R4 Transmission Manual

Part #: 74400

GM THM 700-R4 Transmission Manual (1982 to 1986)found in many domestic vehicles. Covers assembly, dis-assembly, diagnosis, and troubleshooting.

ATSG 74400A 1987-93 GM THM 4L60 (700-R4) Transmission Manual

Part #: 74400A

GM THM 4L60 (700-R4) Transmission Manual (1987 to 1993) found in many domestic vehicles. Covers assembly, dis-assembly, diagnosis, and troubleshooting.

ATSG 74400E 1993-Up GM THM 4L60-E Tech Service Manual

Part #: 74400E

GM THM 4L60-E Transmission Manual found in 1993 and up trucks and vans, 1994 and up passenger cars. Covers assembly, dis-assembly, diagnosis, troubleshooting, and electronic controls & operation.

ATSG 74400EA 1993-03 GM THM 4L60-E Transmission Update Handbook

Part #: 74400EA

GM THM 4L60-E Transmission Update Handbook covers engineering changes that have occured from 1993 to 2003, parts affected by the change, interchangability, and part numbers. A must for 4L60-E rebuilders.

ATSG 74400H 1987-93 GM THM 4L60 (700-R4) Transmission Manual

Part #: 74400H

GM THM 4L60 (700-R4) Transmission 1987 to 1993

ATSG 84400 1984-89 GM THM 4T60 (440-T4) Transaxle Update Handbook

Part #: 84400

GM THM 4T60 (440-T4) Transaxle Update Handbook covers engineering changes that have occured from 1984 to 1989 parts affected by the change interchangability part numbers sprocket ratios and converter stall speeds. A must for 440-T4 rebuilders.

ATSG 84400E 1991-Up GM 4T60-E Transaxle Manual

Part #: 84400E

GM 4T60-E Transaxle Manual found in many 1991 and up GM domestic vehicles. Covers assembly, dis-assembly, diagnosis, troubleshooting, and electronic controls & operation

ATSG 84400G GM THM 4T65-E Transaxle Repair Manual

Part #: 84400G

GM THM 4T65-E Transaxle Manual found in many domestic GM vehicles. Covers assembly, dis-assembly, diagnosis, troubleshooting, and electronic controls & operation

ATSG 84400H1 1984-89 GM TH440 T4 (4T60) Update Handbook

Part #: 84400H1

GM TH440 T4 (4T60) 84 - 89 model years Update Handbook

ATSG 94400 1993-Up GM 4T80E Transmission Repair Manual

Part #: 94400

ATSG 1993-Up GM 4T80E Transmission Repair Manual