Transmission

chevrolet
lumina

#1

Immediately on leaving repair shop for Intake Manifold Gasket replacement, the car had a vibration that my body could feel slightly. That was gone the second day. I then noticed for the the first time ever, that the first and second gear shift had a thump sound, which still continues. Before taking car in for IMG repair, I do recall accidentally hitting the gear arm into Neutral from Drive as the car was moving about 5 mph. But thump shift began after IMG repair visit. What do you think is going on with the Transmission?


#2

What kind of car is “the car”?


#3

I’m going to guess it is a '97 Chevy Lumina.

And I’m going to guess - as a first shot - that there are one or more engine or transmission mounts that may have been undone or loosened during the gasket replacement and that someone forgot to properly torque them/it down.


#4

It’s a 97 Lumina


#5

Just to be clear - the hard shift occurs during driving. In the past, before IMG repair, infrequently there was a thump or clunk sound when

I’ve heard of a loose mount causing a clunk sound when the gear shift lever is moved to R or D etc, and I have experienced that in the past, before IMG repair. However,the clunk/thump I refer to in original Post occurs while driving - the car has a hard shift, more so in the first shift at 10-15mph than at the second shift at 25-30 mph, but at both. Could a loose mount cause this as well? If not, any other ideas? Transmission was serviced 20,000 miles ago.

What about me knocking the gear lever into N from D.
What about Pressure Control Solenoid