If you find oil inside the connector on your Workhorse chassis with a Allison 1000 or 2000 transmission you may develop communication problems with the TCM computer possibly putting you in limp home mode.
I have a video showing step by step how to replace the wire harness.
Watch it here [ Ссылка ]
Rostra 121446A 350-0086 3500086 147-3304 29539792 D121446A Wiring Harness (Internal) 7 connectors
[ Ссылка ]
Allison Transmission spin on oil Filter 29539579
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Filter, Deep Pan Transmission Parts Direct 29542824 Allison 1000/2000/2400: Filter, Deep Pan
[ Ссылка ]

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