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The easiest and quickest way to change the heater core in your 1988 GMC Jimmy is to remove the water from the cooling system. Remove the water lines from the heater core. Remove the heater core retaining bolts. Reverse the process to install the new heater core.

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โˆ™ 2014-09-18 00:22:33
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Q: What is the easiest and quickest way to change the heater core in a 1988 GMC Jimmy S15?
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