I have no idea!!!
 

So here is the deal my cts-v is a pain in my ass.
Think it was built on a Monday.
So when I start it (every time) I start it says low oil pressure then all of a sudden 10 to 15 seconds later the pressure goes right up and stays up.
It doesn’t seem to matter if it is cold or warm or if I need an oil change or just had it changed. Once the pressure goes up you can drive like normal. I have even taken 2 to 3 hours down the highway with no problems.
Like I said only when i start does it do this.
Can anyone come up with an idea about this? I’m out of them myself.
Has anyone had as many problems with the V as I have?

List of items replaced
Water pump
Rear end
Belt tensioner
Steering sensor
Radiator
Transmission mount
Power steering lines have leaked
2 wheel sensors

All this before i ever hit 65 K
Son of B
The funny thing is i bought it from a Doctor that babied it complete car lover.

Oil pressure sending unit is my guess. They are notorious for going bad on these cars.

Yea, it will eventually show 129-130 psi constantly once it goes dead. Had mine replaced at 72k. They're infamous for going bad on LS motors.