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Re: 47RE 5.9 Turbo Diesel (1999) erratic lockup(in&out)
Posted to Transmission Forum on 10/28/2004 1 Reply

Did this truck have the JTEC PCM software update done (TSB 18-02-99)?

The Cummins ECM develops a voltage spike on the 5v supply used by the APPS which causes a spike on the signal output. This spike is then sent to the JTEC PCM which seeing a sudden large ch... Login to read more.

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