Yukon Regearing 456

[Cort Liggins]

I have a 2018 tahoe 6.2L with 10 speed 4wheel drive. 
 

I put a 7 inch lift on the truck and running 35s. 

I had a master Yukon installer, install the 456 swap front and rear into my Tahoe, but for some reason the shop can’t seem to found out why when I drive the truck and get to around 50 miles an hour  and let off the gas it start making like a grinding / splashing sound. It’s loud, the shop has broken down two different times and re-did the installation but still having the same issues!!! Can some one please help me this have been 6k and a month later I still don’t have my truck!!!

 

added list of parts from Yukon that’s was put into truck 

[Cort Liggins]

I have a 2018 tahoe 6.2L with 10 speed 4wheel drive. 
 

I put a 7 inch lift on the truck and running 35s. 

I had a master Yukon installer, install the 456 swap front and rear into my Tahoe, but for some reason the shop can’t seem to found out why when I drive the truck and get to around 50 miles an hour  and let off the gas it start making like a grinding / splashing sound. It’s loud, the shop has broken down two different times and re-did the installation but still having the same issues!!! Can some one please help me this have been 6k and a month later I still don’t have my truck!!!

 

added list of parts from Yukon that’s was put into truck