I have an 01 LT. Just replaced my intake gasket cause it was leaking. A day or 2 after the fix my engine light came on check the oil and antifreeze both were good. And there was no antifreeze in the oil. Anyone have the same problem.

 

Take it to Autozone or other shop to get the error code(s). There could be a thousand things it could be either related to the repair or just a coincidence. Most likely you either missed a sensor connection or vacuum line but you never know.