06 ESKY OIL Pressure gauge pegged at 80?

[02Lightning]

Ok, the mother-in-laws oil pressure is pegged at 80 psi. When I turn the key to run position the gauge peggs at the high end before the car is even started. Then when I start it, it stays at the same place, never moves. Any ideas? I'm thinking it's a bad cluster? When it is in accessory position the gauge goes to zero.

---------- Post added at 10:10 PM ---------- Previous post was at 10:09 PM ----------

Oops, sorry wrong spot.

 

[sumo]

sounds like a bad sending unit. how are the oil levels? Any unusual noises from the engine?

 

[02Lightning]

motor sounds fine, and changed the oil again to make sure it was the correct weight. Where would the sender be on a 6.0 2006? I guess I could unplug the sender and see if that does anything.

 

[sumo]

here this will help you out

http://www.cadillacforums.com/forums/cadillac-escalade-ext-esv-forum-1999/176963-oil-pressure-high-reading.html

 

[02Lightning]

Thanks!

 

[sumo]

let us know what you find. Your welcome

 

[02Lightning]

I got back there last night and unpluged it and the gauge went to zero. So I assume that is it.