Q: transmision wont shift out of frist gear on 1990 Chevrolet G Series Van (G20)

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
the trans just stop shifting but will go in all gears.
(1) Answer
have a shop check the govenor gear. it is common for dishing and will not build pressure for shifting. common failure in those transmissions.
it is external and an easy fix.

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