Low Oil Pressure Oil Pressure Regulator?

[dblount]

I have a 2003 gmc 1500hd 6.0 with low oil pressure. when I start it up, it is around 10 psi and after it warms up at idle, the oil pressure working comes on. I have replaces the sensor and was thinking about changing the oil pressure regulator or relief valve, but i can't find it anywhere. Does this just come with a new oil pump? thanks David.

[txab]

You could have the stepper motor that is the "gauge" going bad. I'd check oil pressure with a mechanical gauge first.