link doesn't show,,,at least not for me,,,thanks

 

How do you create a new post on this website ? Sry I not a techy. I have rough idle on auto 07 cts 2.8

 

have a 2002 Cadillac Seville SLS norhtstar. 174,000 miles original owner. recently overheating. radiator and cooling system flushed by a garage. Mentioned it was very very 'plugged' up with gunk. Later, the mechanic after putting it back together said: blown head gasket. Now: No white smoke from tail pipe. Engine runs smooth. No water in oil:clean. Engine heats up after 15min driving and then cools back down to 'just over heating zone, but not back to normal. upon checking: cap has sprayed fluid around the neck of the 'bottle'. Next day I notice it is low approximately 1-1/2 gallons....I fill with GM orange raditor fluid and water/50/50. Currently drove car and still overheats...but upon driving...returns back to one 1/4 over normal on the gage. Is this a thermostate problem? Also the fluid, yes orange in color is sort of a whipped orange foam at top of cap upon upon opening.

thanks
u4s