Question about 1998 Chevrolet Blazer

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My Blazer 1998 w/Vortec 4.3 and only 34,500 miles on it, start w/heating problems, where the thermostat goes? and how I can replace it, before dismount radiator and check it for the problem. Thanks for your help.

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The thermostat is under the housing at the bottom of your top rad hose. Held in by 2 bolts.

Posted on May 14, 2009

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1998 chev blazer 4x4 4.3L vortec do i need to pull the engine to replace the transmission oil cooler lines?


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Sep 19, 2010 | 1998 Chevrolet Blazer

1 Answer

How do you change a thermostat in 1998 blazer


The thermostat is under the fitting with the upper radiator hose on. Remove the 2 bolts replace the thermostat, add coolant. Allow the engine to heat up with the radiator cap installed on the lock position not fully tightened. The air in the system will purge out into the reservoir. Fill the reservoir to the hot line when fully heated and no air is coming out anymore.

Dec 06, 2009 | 1998 Chevrolet Blazer

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1998 blazer will not start


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How can I locate the blend door for the heater/defroster


Well FOR THE FIRST PROBLEM YOU PROBABLY NEED TO REPLACE THE THERMOSTAT IT IS MORE THAN LIKELY CLOSED SHUT NOT LETTING COOLANT INTO THE BLOCK TO CIRCULATE THE HEATED COOLANT 2ND THE UNIT IN WHICH CONTROLS THE TEMPERATURE OF THE INSIDE OF THE VEHICLE IS OR MAY BE BAD I WOULD START WITH THE THERMOSTAT FIRST BEING THIS IS USUALLY A MORE COST AFFECTIVE SOLUTION GOOD LUCK!

Nov 21, 2008 | 1998 Chevrolet Blazer

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