2003 GMC Sonoma Truck acts like it is in neutral periodical

Tiny
BKC2A
  • MEMBER
  • 2003 GMC SONOMA
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 180,000 MILES
When I put the truck in D and drive forward the truck will go forward as it supposed to but suddenly while driving the motor will rev up and the truck acts like it is in neutral for a second and then it will engage again. The truck will do this back and forth while trying to drive. Thanks for any advice.
Monday, January 18th, 2010 AT 3:53 PM

1 Reply

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Check the fluid level of the trans first (Idling in park) to see ifi t is low. If ok, you may need to service the trans (Filter kit) a partially plugged filter will do what you describe. If it is the original trans I dont suggest a full flush of the trans at that mileage, just drop the pan and change the filter and the necessary amount of fluid to bring it up to correct level (Approx 4 qts)
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Tuesday, January 19th, 2010 AT 8:13 AM

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