Goats

Just had a bunch of service done on the V at the dealership including an oil change. Now the oil pressure is pegged at 129 psi, appears to be the max as it has not gone any higher. The oil level is good, oil temp and water temp is normal. I am thinking the gauge is bad. But the oil change was just done 10 miles ago.

06 SS

sounds like you lost a ground at the gage

Slithering_Joe

Sounds like sensor, wiring or connection failure.

RocketSSled

It's probably the wiring issue (poor ground) that I and other V owners have had. Go to the dealer to have it corrected. They should be able to pull the TSB.