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Buzzing Noise and Missing something
Posted to HD/Fleet Forum on 5/5/2019 9 Replies

2009 Navistar 4200 9H542344 with a VT365 aka 6.0L. 2 problems. Getting an intermittent shutdown that leave a 626 DTC. Unexpected power loss. Also 523 IDM voltage low. Have inspected all the usual suspect wiring trouble points. Replaced on set of connectors tha... Login to read more.

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