I have a 2004 Buick Park Avenue that has about 145,000 miles. Problem: It shifts hard after it warms up. Why and how can I get it fixed?

Asked by Jan 10, 2015 at 02:07 PM about the 2004 Buick Park Avenue FWD

Question type: Maintenance & Repair

Transmission shifts hard after car warms up or driving 15-20 miles.  Why and how do I
get this fixed?

2 Answers

1,175

Have someone hold the brake and shift it from park to reverse to drive while you look into the engine compartment watching the motor mount and transmission mounts, you shouldn't observe a lot of play, if you do they may need replaced. If not it could be the clutch plates internal to the transmission. Mounts are not cheap but compared to a transmission rebuild, they are. hope this gives you some direction, best wishes.

1 of 1 people found this helpful.
1,175

You may want the person to hold break and put in drive and lightly apply gas to really see if engine raises excessively. What is excessive? More than a fraction of an inch (3/8 or more) the mounts are metal and bonded rubber and besides holding the engine and trans in place they absorb shifting if you have one that tore, when the engine shifts it can be felt .

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