I just heard back from the dealer and I hope we all don't find this to be a Ecotec Issue!!!
Note that the Ecotec engine is a 4 piece case; Upper; Cylinder Head; Lower; Oil case. They tell me the "Lower" crankcase seal (silicon bead) has failed. OK no biggie...WRONG!!!
Seems that GM in their infinite wisdom eliminated crank shaft bearing caps by casting them into the "Lower" case now called CrankCase. When mated to the "Upper" the "Lower" holds the Crank up into the Upper. They silicon the two together and the Main Cap Bolts hold the two together. SO in order to reseal the Upper & lower, they have to pull the motor, invert it (so the crank assembly doesn't fall out
, disassemble, clean, throw away cap bolts (one time use only), seal, reassemble and reinstall. $1,500!!!!
I only have 75K miles on what I thought was a proven engine.
Anyone else have this or heard of it?