1998 Chevy Truck Transmission Shifting Hard

1998 CHEVROLET TRUCK
89,500 MILES • V8 • 4WD • AUTOMATIC
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BIGGRIPP
  • MEMBER
  • 1 POST
Every time I drive my truck for a while, the transmission shifts hard when changing gears. This only happens during the months that the temperature is warm. What do you think could be causing this to happen? It never happens during the cooler months.
May 10, 2008 at 11:50 AM
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PEAR69
  • ✓ASE Certified Mechanic
  • 1,482 POSTS
  • ASE Certified Mechanic
Change the tranny fluid and put in a higher mileage fluid-- Valvoline 75000 mile plus tranny fluid worked for me.
May 19, 2008 at 5:33 AM
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