engine reving

1989 CHEVROLET CHEYENNE
150,000 MILES • V8 • RWD • AUTOMATIC
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SCHAGIN
  • MEMBER
  • 1 POST
truck shift good, first, second and third.When you hit about fifty miles an hour it just seems to start revving really high so back off to about forty five and runs good. What could be the problem?
May 18, 2017 at 8:42 AM
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STRAILER
  • CERTIFIED EXPERT
  • 53,854 POSTS
Hello,

Please check the fluid level and the condition of the fluid it might be time for a transmissions service.

Here is a guide that will help you get the job done.

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Please let us know what happens.

Cheers, Ken

May 22, 2017 at 10:25 AM