if it's the same as the 80's, that will require removing the entire dash board. this will take a good deal of time... have fun with that.
To replace the heater core in a 1984-1989 Nissan 300ZX, first disconnect the battery and drain the coolant. Remove the dashboard and the center console to access the heater core. Detach the heater hoses from the core, unbolt it from the housing, and then install the new heater core by reversing the disassembly steps. Reconnect all components, refill the coolant, and check for leaks.
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yes, see toms z31.com
To remove and replace the heater core on the 1987 Nissan 300ZX with air, begin by removing the dashboard totally. This means the radio panel and the instrument cluster. Remove all air ducts and access the heater core. Remove the bolts holding the core and replace it with a new core. Then replace the dashboard and instrument panel.
comes out inside . remove glovebox and go in that way . about one hour .
very carefully
Drain the water from your 1990 Chevy Corsica cooling system. Remove the heater core water supply hoses. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
To replace the heater core on a 1990 Chevy Caprice, begin by disconnecting the negative battery cable and draining the coolant. Remove the dashboard and any components obstructing access to the heater core, such as the center console and the climate control housing. Disconnect the heater core hoses from the engine bay, then unbolt the heater core from the housing and replace it with the new unit. Reassemble everything in reverse order, refill the coolant, and check for leaks.
Remove the water supply lines from your 1990 Ford E3 50 heater core. Remove the heater core retaining bolts. Reverse the process to install your new heater core.
How do you replace the heater core on a jimmy?
Take out the whole dash and then the heater core should be behind the glove box on the passenger side.
how do u replace the heater core