I have a 97 yukon with the 5.7 vortec. Its been loosing antifreeze. Granted i just did the head gaskets maybe 10,000 miles ago. Today i brought it home and a puddle of antifreeze on under the truck by the rear of the motor on the passenger side. I can see it its all over the starter trans and oil pan. What would cause this? Freeze Plug. I am not to familar with the vortec motors. can someone help me please.. it snowed here now i dont have my 4x4 just 2 camaros lol..