1990 Buick lesabre when cold transmission slips 2nd going to drive when it warms up it becomes better

Asked by May 31, 2014 at 10:31 AM about the 1990 Buick LeSabre Custom Sedan FWD

Question type: General

Transmission slides from 2nd into drive

4 Answers

122,635

What color is the trans fluid? Have you replaced the fluid and filter lately? If not might be time to do that.

2 people found this helpful.
17,685

and after a day or two drain out some more through the filler tube. Do it once or twice until it's nice and red......don't let anybody tell you that a drain and filter won't help. It may not work but it's a cheap first step.

1 people found this helpful.
17,685

P.S. don't put any stop leak in but a pre-draining condition a few miles ahead of time is ok.

1 people found this helpful.
122,635

I have found that adding a can of CTC really helps older transmissions.

3 people found this helpful.

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