Transmission?

[Luv53]

Recently purchased a 2002 Yukon xl after losing my Sierra with 375k miles. Upon purchase all fluids looked great, no smells/sludge etc. vehicle handled test drive well including heavy acceleration. Unfortunately, 1500 miles later and I'm afraid the transmission went out. Upon accelerating from a slow down (car in front of me turned), there was a weird clunk and then whining sound. Oil pressure gauge was creeping up to 80, rpm was about 4-5k and speed would not go over 10mph. I'm no stranger to transmission issues with the Sierra and I was really hoping to avoid this sigh.

Does this sound like a transmission issue? A replacement? It has 185,000 miles on it and as much as I love the GMT800, 5.3, and GM I want to just get rid of it now.

ETA- no codes when we purchased it, nor is it throwing any tonight either. That's a bit odd, which makes me think they were cleared and I got stiffed, or I have extremely bad luck.

 

[about20ninj45]

did you check to see if you blew a hose? Any fluid left in the old trans? Have you checked the dipstick?

 

[Luv53]

I had to leave leave on the side of the road due to weather. I'll be headed out to check that while waiting on tow truck.

 

[Luv53]

Fluid looks and smells fine. It's parked unlevel so I can't get an accurate reading but I did look up top and underneath to see if I could find a leak. No fluid under the vehicle either. So I am going to see what the transmission shop says.

 

[rockola1971]

Sunshell bit the dust. Stripped it. The OEM ones can do that with age or one heavy doglegged camper or trailer backing up. Tell them to put a Beast Sunshell in or equivalent in on the rebuild. The Beast is cheaper than the OEM and it is beefier too.