Stopped by the dealer and now I have to cross my fingers. The tech called GM and want him to inspect the cam and determine if there is metal up there. If there is then they will replace the motor. If there is no metal then they will recommend a rebuild...
...He will inspect the cam on Monday.
Here are some pics. It was rod bearing #3 that blew. Fuzzy picture of the cam damage, rod bearing sleeve, metal in the oil pan and the oil pickup filter.