I'm at a loss... Can't determine CLUNK sound

17 Tahoe LS with 140k. The suspension has been making a clunking sound front and rear. It was due for a full front and rear end suspension refurb so it has new:

New hardware
New Upper and Lower arms front and rear
Panhard bar
Front and rear factory shocks
New front spring upper seat
New spring insulators
New upper shock mounts
New strut bumpers
New rear upper insulators
Swar bar mounts and links new

Pretty much every component has been replaced new with OEM parts and I'm STILL getting the clunk. Sound only happens on bumps and road imperfections at slow and high speeds. Anyone have any ideas

how does your car idle? Could it be motor mounts? Try to isolate the bump by doing things like pressing on the brakes/accelerating/decelerating/coasting/engine-loaded or not

for example, when you are about to hit the bump, drag your brakes a little. This will put tension on the calipers and rotors to rule those out. Could also be Bearings, but that would make a howling sound. and could be something simple like a nut that wasn't tightened. This happened to me before. a bolt on the lower control arm was on, but night tightened.

Sound travels… where you hear it may not be where it’s coming from.

Sway Bar, Sway Bar Bushings, End Links, Ball zjoints, Tie Rods are all common Kline’s, especially at 140k

Check your front differential mounts.

mrkev said:

how does your car idle? Could it be motor mounts? Try to isolate the bump by doing things like pressing on the brakes/accelerating/decelerating/coasting/engine-loaded or not

for example, when you are about to hit the bump, drag your brakes a little. This will put tension on the calipers and rotors to rule those out. Could also be Bearings, but that would make a howling sound. and could be something simple like a nut that wasn't tightened. This happened to me before. a bolt on the lower control arm was on, but night tightened.

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After posting last night, I thought about the engine mounts. They’re less than a year old but maybe they weren’t torqued down enough. The hubs are still good and all the bolts were checked.

Joseph Garcia said:

Check your front differential mounts.

Click to expand...

RWD

LegalBrief said:

Sound travels… where you hear it may not be where it’s coming from.

Sway Bar, Sway Bar Bushings, End Links, Ball zjoints, Tie Rods are all common Kline’s, especially at 140k

Click to expand...

Like I stated in the original post, all of those items are new

Transmission mount worn or loose? All crossmember bolts tightened to spec?

Fless said:

Transmission mount worn or loose? All crossmember bolts tightened to spec?

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Yup, and it’s new also

Double checked and everything is tightened up. All three mounts are good.

The only other thing I can think of is the driveshaft/Ujoints. I do have some play on the shaft as I turn it… but not forward or backwards