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go to website coloradok5.com and look in their tech section. they have very detailed instructions on changing a heater core in a Blazer....should be exactly like your suburban. its kind of a pain but worth the money you'll save over paying someone else to do it.

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โˆ™ 2011-09-13 00:08:13
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Q: How do you change a heater core on a 89 Chevy suburban blazer 4x4?
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