If your instrument panel ( dash ) is telling you that you have really high oil pressure, your gauge is actually broke. It is 99% of the time a bad ground that is on the .
The Oil Pressure guage Stepper motor on our 04 GMC Sierra is failing, see what this looks like and note that it can happen to any of the .
This is the fix 90% of the time when the oil pressure gauge is maxed out. The repair will cost about 50 bucks for the part and about 1 hour of labor. This is the .