ZF-6 Reverse problem

264WSM

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Nov 25, 2017
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Wyotana
In the recent 30" of snow we got I had to rock the truck a bit to get out of some situations. Since then, the trans doesn't want to stay in REVERSE. The bigger the load the faster it pops out of R. Backing up on flat pavement is OK, Backing uphill on rutted dirt/mud, it pops out right a way. Holding the stick forward helps, but not much. The trans was rebuilt 7000 miles ago, but it was 3 years ago and the warranty is expired.
Do I have a broken tooth on a gear ??? A shifter problem ??? Both??
 
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