Car acting jerky

2006 BUICK RENDEZVOUS
141,200 MILES • AWD • AUTOMATIC
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JLFUERST
  • MEMBER
  • 2 POSTS
When I am traveling on the interstate going 80 mph and I have to go up a hill the car shifts into high gear and then it jerks, it is a two step process every time. Then when I get to my destination and stop at a red light and when the light turns green and I press the gas to go again it jerks. It only occurs at high speeds and then after long trips at high speeds at the first full stop. What is this?
Mar 16, 2016 at 7:55 AM
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MIKE H R
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 3,094 POSTS
Have the transmission checked, there may be a clogged line or the filter may need to be changed. There is also a down shift rod. Check so it has not slipped
Mar 16, 2016 at 8:51 AM