Please help!!! Tranny issue

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Dec 29, 2019 | 11:24 AM

Hcornwell1

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Please help!!! Tranny issue

2013 f250 6.7
Last night I went to get diesel and just cruise around. Truck started flashing brake lights abs lights and track lights. Lost engine power pull in a gas station and go to put it in reverse and it started to lunge. Put it in park and clear codes u0073 and u0121. Drove fine after. This morning I get in and go to back ups it doesnt go anywhere. Reverse is now a park, park is like a drive with the brakes slammed and neutral is more like a drive. Dint know what could be the issue. It's never slipped. It has shifted hard from time to time after I installed my tuner.

Dec 29, 2019 | 12:44 PM

alloro

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Both codes refer to a loss of communication so you either have a blown fuse, a chaffed wiring harness, or a connector in the system that's corroded.

Dec 29, 2019 | 12:49 PM

Hcornwell1

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Quote:

Originally Posted by alloro

Both codes refer to a loss of communication so you either have a blown fuse, a chaffed wiring harness, or a connector in the system that's corroded.

would that cause it not to go in reverse?

Dec 29, 2019 | 12:54 PM

alloro

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Quote:

Originally Posted by Hcornwell1

would that cause it not to go in reverse?

Both circuits could be in the same portion of the harness. A visual inspection is really the next step here.

Dec 29, 2019 | 01:06 PM

Hcornwell1

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[QUOTE=alloro;19025898]Both circuits could be in the same portion of the harness. A visual inspection is really the next step here.[/QUOT
I already tried chase dont all abs wires and tranny harness no chaffing.