I have the thinking cap on, may take awhile as the possibilities are huge ...........
If the steering shop has had a look then it shouldn't be things like shock mounts, tie rod ends etc but you never know..
Did they replace the front axles or the actual drive shaft ? either way when the CV joints on them start to go they will knock.....
Find some dirt and do some tight figure 8's at a reasonable speed to see if any knocking happens if so then its in the drive, so one of the axles has a dodgy CV or there's something in the diff not right ........... drop the diff oil and look at the plug to see if any shavings, if not refill with something like Penrite Pro Gear 75W85 GL5 ...
The upper ball joints and drive shaft, did they show signs of problems or was it a workshop replace them and see affair ???
Then again it could be an engine or gearbox mount or something simple like a loose panel or fitting, sound travels so it could even be from the back.
Running standard wheels and tyres or have you upped them ???
I service my Auto and TC every 40K kms and if its going to cause you grief it will let you know ....
What year model and version of JGC ?
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2015 WK2 CRD Laredo( ZG, WG 2.7 )
Your Never Too Old To Learn Something Stupid.
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