What should the oil pressure read at idle on a 2000 Chevy v8 truck?

The oil pressure at idle on a 2000 Chevy v8 truck should be between 20 and 40 psi. If it is below 20 psi, it may be a sign that the oil pump or oil filter is clogged, or that there is a leak in the oil system. If it is above 40 psi, it may be a sign that the oil is too thick or that the oil pressure relief valve is sticking.