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trany ?

Question Description

I’m trying to learn for my class and I’m stuck. Can you help?

1998 GMC siearra 3500 diesel dully auto 4 wheel drive 

my transmission will not shift from 1st. it has not ever slipped - seems to have the correct amount of fluid - worked perfectly when I parked but when I restarted the service engine soon light came on and it would not shift

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Final Answer

From what you are saying, it sounds like your transmission has gone out. Your sun gear reaction shell has likely broken. I would recommend overhauling your current transmission or buying a re-manufactured transmission from a reputable company. AC DELCO makes good replacement transmissions.

rafffy (55)
Rice University

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