‘02 Silverado V6: how many pan bolts?

Anyone know how many pan bolts there are for a '02 Silverado V6?  I've removed 10 and the two horizontal bolts that connect the pan to transmission. Pan won't budge. 
I think I'm still missing two bolts (based on the limited info I could find on the web), but can't figure out where they are.
Are they under these rubber bumper things?

I think they may be towards the front, but I don't see any. Do I have to remove the timing chain cover to get to them?

I'm just baffled at the moment and need a second set of eyes. 
-Rob

There might be two more at the rear.  Pull those rubber things and see what's up there.

Streetwiseguy said:

There might be two more at the rear.  Pull those rubber things and see what's up there.

That's a bingo!  Whew!  Thanks for the prompt reply.