Will not go in gear

1984 BUICK ELECTRA
163,000 MILES • 2WD • AUTOMATIC
Avatar
84PARKAVENUE
  • MEMBER
  • 1 POST
THM2004R will make a little thump when trying to go in drive. checked fluid lever hot in idle will only whine in reverse. what could be problem?
Apr 16, 2020 at 12:45 PM
Advertisement
Avatar
ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
Good afternoon,

It sounds like the front pump is whining from lack of fluid. This noise usually sounds like a power steering noise when it is low in fluid.

https://www.2carpros.com/articles/automatic-transmission-problems

What causes this is the filter is clogged in the pan and needs to be changed.

I would drop the pan and change the fluid and filter.

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Roy
Apr 16, 2020 at 1:10 PM