Fluid level is where it should be.
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1996 Chevrolet G Series Van (G30) Question: Transmission does not want to shift up, stays in low. reverse and neutral fine.
Answer #1ebans777 March 03, 2014, 23:09Master
seek to diagnose it like AAMCO transmission
Answer #392G306.2 July 06, 2014, 22:23Rookie
It's likely a speed solenoid. They generally go bad from normal use over 20 years. You should replace all of them at once. There are 3. They are simple to get to under the van and easy to replace.
The connectors may be bad as well. The whole process for solenoids and connectors shouldn't ve blmuch more than 150-200$