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International Automotive Technicians Network
Re: 1998 Peterbilt 320 Low Power
Posted to HD/Fleet Forum on 4/2/2018

The fix was a wire either from the TCM to VIM or the VIM to the ECU. The VIM is behind the driver seat and the wiring was not secure. The wire got cut by the seat track when drivers changed. Found the wire as I was removing the seat to get at the VIM. Login to read more.