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Rough shift from 1st. To 2nd. When van cold

Tiny
KENNY 2956
  • MEMBER
  • CHEVROLET VENTURE
I have a 2ooo chevy venture van 3.4L engine with 115,000 miles. It has a delayed rough shift from 1st. To 2nd. When van is cold and the outsde temp. Is below 45 degrees. Problem goes away after 5 or 10 minutes of driving. All other shifts are smooth. The 1st. To 2nd. Shift is smooth if it's warm outside. Transmission fluid is in good shape. Any ideas what could cause this? Thank you.
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Saturday, October 27th, 2007 AT 11:03 AM

1 Reply

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Im not a transmission guy, but I do know GM had a bunch of valve body updates for harsh 1-2 shift around those years. Try calling few trans shops and asking
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Sunday, October 28th, 2007 AT 8:32 AM

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