I'm leaning towards a transmission issue(torque converter), put the suv on neutral at that speed (65) and raise the rpms to 1500 thru 1900 and if the engine misses its an engine issue if not it's transmission related.
Have a paint shop do a hard blend and repaint those panels and buff the entire suv. A hard blend will get the paint as close as possible to the existing color (paint fades over time)
I'm sorry that you are going thru this, I would have the shop redo the work. I bet they used the wrong oring and didn't even clean the pick up tube. Apparently those yahoos have never worked on an LS engine to know that the pick up tube needs to be cleaned. It's hard to believe that an LS engine...
I used arp hardware, the arp bolts get tighten with a torque wrench.
The ARPs are three pass in the stock procedure. First pass is 30-35lbs, second is 50-55lbs, and the final pass is 70-75lbs for the large bolts, 25lbs for the small bolts if I recall correctly.
It would be best if you start a separate thread and list all the things you have done to diagnose your problem.
Your problem might have a different solution.
Only high end obd readers read suspension codes. There's a thread on this forum that shows members that have a Tech II along with their locations. You might get lucky and be close to one of the members. They can scan the suspension codes for you.
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