GMT360 gauge clusters all the same?

[Cadillac Mac]

I just purchased a 2004 Rainier v8, 159k miles. Everything seems pretty sound but needs a little tlc. My question is are all the gauge clusters compatible? GMT360
My oil pressure gauge is messed up, right when i turn the key to on it just pegs the oil pressure to 80psi. Engine is not on. What do you guys think?

 

[MelsRegal]

I just purchased a 2004 Rainier v8, 159k miles. Everything seems pretty sound but needs a little tlc. My question is are all the gauge clusters compatible? GMT360
My oil pressure gauge is messed up, right when i turn the key to on it just pegs the oil pressure to 80psi. Engine is not on. What do you guys think?

Does it stay at 80 when running?
Did you check if the sensor wire is touching something other than the sensor?
What is GMT360?

 

[Cadillac Mac]

Does it stay at 80 when running?
Did you check if the sensor wire is touching something other than the sensor?
What is GMT360?

Yes stays at 80(maxed out)
No I have not looked at the sensor or any wiring.
Gmt360 is the chassis platform for trailblazers, envoys, and rainiers. So identical vehicles just different looks/trims.