Engine Kits

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



Part #: 121400
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This ATSG Automatic Transmission Manual is for the Allison (Generations I-II) 1000/2000 Transmission found in 2000 and up C and K Series Chevy GM trucks.

This transmission manual covers assembly, dis-assembly, diagnosis, troubleshooting, electronic controls, and operation.