Transmission clunck shifting into drive

[sctrl]

Hi all. Recently I started noticing a loud metal clunk when shifting into D or R from Park on cold. I recorded a video of this. Also, there’s a long delay between shifts when cold. The video shows shifting from P to R to D to R to D and to P again. When tranny is warm, shifts are faster and clunking noise is not noticeable.
What do y'all think, alarming?

 

[Geotrash]

Hi all. Recently I started noticing a loud metal clunk when shifting into D or R from Park on cold. I recorded a video of this. Also, there’s a long delay between shifts when cold. The video shows shifting from P to R to D to R to D and to P again. When tranny is warm, shifts are faster and clunking noise is not noticeable.
What do y'all think, alarming?

Motor mounts is my guess if they haven’t been done.

 

[sctrl]

Motor mounts is my guess if they haven’t been done.

I replaced them with H3 mounts a year ago. Maybe I messed something up, will recheck bolt torques.
But does it explain that clunking going away when drivetrain is warmed up?

 

[OR VietVet]

Yea, that does not explain noise going away when warmed up but I bet ol' @rockola1971 has an opinion.

 

[donjetman]

Front differential carrier mounts

 

[OR VietVet]

Front differential carrier mounts

Ok, but again, why does noise go away when warmed up? Plus, those carrier mounts would have to be real bad to make that noise just shifting gears. I don't doubt the possibility but I am curious and want to learn something if I can.

 

[sctrl]

It’s 2x4, no front differential. Maybe transmission mount? But I don’t see it moving much.

 

[Geotrash]

It’s 2x4, no front differential. Maybe transmission mount? But I don’t see it moving much.

It doesn't look like it's coming from the differential because I would expect to see the input shaft jump at the same instance it makes the noise. And you have a 14-bolt which is considerably tougher than the 10-bolt.

I know that you're having shifting performance change at the same rate, but they could also be two separate issues. So another possibility is that you're experiencing the time-honored GM driveline clunk:

 

[Dustin Jackson]

Sounds more crunchy than I expected, I've had a few chevys that clunked a lot when shifting into D or R. I would say its nothing to be concerned about. Drive it until it breaks and THEN you'll know what the problem was.

 

[Joseph Garcia]

I will repeat what @OR VietVet said. All of the suggestions given so far do not explain the fact that the OP says that the clunk goes away after the motor is warmed up.