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What is the best way to replace a leaking heater core on a 1992 GMC 1500 extended cab Sierra Grande pickup?
Wiki User
∙ 19y ago
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.
Wiki User
∙ 9y ago
Wiki User
∙ 8y agoYou will need to go and get a repair manual. This job though not really that technical, it is very involved, as with most vehicles, the entire dash assembly will have to be removed. And some vehicles with A/C makes the job even more difficult. But, your vehicle being sort of like a truck, may not be the case.
Wiki User
∙ 15y agoEasiest way: There isn't one. Remove whole dashboard.Upper passenger floorboard the core is located. Remove the in and out hoses in the engine compartment. Once dash is removed, which is a pain. The heater core will be exposed for removal.
Wiki User
∙ 19y agoGet a manual on your car from the parts store and follow the directions. It isn't hard but it requires lots of screw removal/
Wiki User
∙ 16y agoYou must remove the entire interior dashboard..
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