Over heating-head gasket problems - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 06-18-2012, 09:11 AM   #1
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Default Over heating-head gasket problems

Im sure theres probably been a million threads on this problem with the Northstar engine but to keep from digging through all the old info, is there an easy fix for this? I see lots and lots of Cadillacs with this problem but have never heard of a definite fix for it. Main problem is that if buying one with the head gasket problem you have no way to know just how hot the owner has gotten the car, correct? Ive heard of pellets, fluids,even replacing head gaskets but no sure fix. I have also heard that theres some type of crossover for the coolant that gets clogged causing this problem but have never actually seen what or where it is. Anyone have a good solution, I would love to hear from you as I have had chances to buy nice Cadillacs but with a heating problem it scares me away. Thaanks!!
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Old 06-18-2012, 10:02 AM   #2
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I have heard that a company does make a kit for them. In order to do it, it requires all the bolt holes to be drilled and inserts put in then fresh bolts. Supposedly that'* the best fix on the market.
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Old 07-23-2012, 09:34 PM   #3
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I just did a 07 DTS the other day that was overheating. I thought it was the headgaskets but ended up being the coolant crossover gaskets leaking when it was cold. Luckily I pressure tested it the night before I tore the engine out to do the headgaskets! Came in to a big puddle of antifreeze on my floor the next morning. They would have been changed while doing the headgaskets and it was under warranty, but I'm pretty glad I found a definite problem and know it'* repaired for sure now. BTW it was NOT a fun job!
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