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Reverse will not work

Tiny
JIMMY BRYANT
  • MEMBER
  • 1994 BUICK PARK AVENUE
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 163,000 MILES
Was accelerating and heard/felt something give and chattering started, and engine would rev but not accelerate. I slowed very gradually then shifted to 1, 2 and drive and the engine would pull in forward gears without the chatter. I then put the engine in reverse and the chattering started and would not work in reverse.
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Sunday, March 6th, 2022 AT 2:57 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Hi,

It sounds like what is called the reaction sun gear housing has failed. I attached an exploded view of the component I'm referring to.

Here is what I suggest. Drain and remove the transmission fluid and remove the transmission oil pan.

There is a magnet in the pan. See if there are any metal shavings attached to it.

Let me know.

Joe
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Monday, March 7th, 2022 AT 2:05 PM

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