Could possibly have a cracked head..if it is a 5.3 liter engine remove valve covers and check for casting cracks around bolt recess...see local dealer for bulletin on this problem and pictures to id head castings
Did you check the water ports on the head were they opened up with corrosion ,-- did you put the gasket on the right way round ,was it the right gasket with the right number of holes
201 views
Usually answered in minutes!
×