Just installed the LS6 w/ EGR
Reach under the cowl to the back of the intake manifold and gently see if you can locate the oil pressure sending unit and make sure it is still in one piece, they frequently get broken when doing intake swaps.
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that narrows it down, it's a very common problem
Last edited by SSmokin99; Jul 30, 2006 at 03:15 PM.
You might be able to change him out without removing the manifold even. Search for oil pressure sending unit in this section and you'll come up with a few pictures of it.


NAPA sell's them for about $7 or so.