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1998 blazer over heating


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prattski1973
New User

Jul 23, 2013, 1:17 PM

Post #1 of 2 (785 views)
1998 blazer over heating Sign In

my 1998 chevy blazer started to over heat today. I quickly turned the heater on full blast and the engine instantly started to cool down again. I made it back home ,waited awhile,and started the truck back up again . This time it started to over heat in my driveway,with the heat on. I am wondering if this is a sign of a bad thermostat,or something far worse. Thank you for your time.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 23, 2013, 2:41 PM

Post #2 of 2 (747 views)
Re: 1998 blazer over heating Sign In

There are dozens of possible causes for overheating. Your first step is to pressure test the cooling system for leaks and make sure the system hasn't sludged up from old Dexcool.



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