Stalling 2004 AllRoad in Pine, CO

[Gerard]

Hi

Been a while since I've been here with questions. :)

My sister lives out in Pine, CO, about an hour out of Denver. She's 
running a 2004 2.7T AllRoad automatic. She loves this car, but there've 
been some niggles lately.

It's started stalling on the highway. First time it stalled she'd been 
driving for about 15 minutes. Second time it was 45 minutes. No 
overheating conditions.
My immediate thought w.r.t the stalling is faulty fuel pump, but there's 
so much that could be causing it (O2 sensors, crank/cam sensors, blocked 
cats, DBW faulty, MAF faulty, etc, etc, etc). I've got no clues about 
these 2.7T engines.

About a month or so ago she reported some transmission noise. Stopped, 
transmission in drive, there's some clicking noise going on. Only 
evident when parked up next to a wall, like in a drive-thru. Put into 
park and it goes away.

Anyone near Denver or Pine who might have some OBD-II diagnostic tools 
or might be willing to help track these faults down? Thought pulling the 
error codes might help.
Or any recommendations for a reputable shop that won't charge her an arm 
and a leg for some diagnostics?

Much appreciated.

G.