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It can be that your coolant level is low, your thermostat is stuck, the actuators are sticking...

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15y ago
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Q: Why would a 1997 s10 Blazer heater only work on occasion?
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Replace heater core in 1997 Chevy blazer?

how to replace a heater core in a 1997 Chevy blazer


How do you remove the heater fan on a 1997 Chevrolet blazer?

were is the heater relay on1996 jimmy?


Where is the location of the heater motor in 1997 Chevy blazer?

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To many steps to list here, would recomend purchasing a shop manual if you intend on replacing that heater core yourself.


Would an automatic transmission from a 1997 Blazer fit a 1996 Blazer?

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your heater core is going out, you need to replace it before it ruptures.


Where is the heater core located on a 1997 Chevy Blazer?

Behind the dash assembly, big job for the faint at heart.


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Not a fun job. If your looking to replace the heater core it requires removal of the entire dash and steering columm. I would suggest purchasing a shop manual for that vehicle to help you step by step thru the job.


Where is the heater relay switch in 1997 Chevy blazer?

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What other years blazer parts are interchangeable with a 1997 Chevy blazer?

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