1993 gmc k3500 6.5 deisel

Question Description

I’m stuck on a question and need an explanation.

transmission will not shift into reverse or drive,0nly into 1st and 2nd


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Final Answer


Check your fluid level and fluid color. Is it dark and smells burnt? If it has an odor of a burnt fluid it is more likely that you will be needing a complete transmission rebuild.

Sometimes this type of problem is associated with bad shift solenoid. Have your shift solenoids check. A good mechanic should have the resistance specification at hand when checking these solenoids. GM have a recommended resistance in ohms of properly working solenoid switch.

Check the transmission's wiring harness. GM cars are known to have a pretty weak wiring harnesses.

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