behind the dash!..... an experienced tech would take about 6-7 hrs to replace a novice 15hrs.+ depending on ablities...good luck!
diagram for a 92 Chevy van g20 Heater core
help me preplace heater core in 92 Chevy van g20
How do you change a heater core in 1994 chevy astro van?
How do I replace the heater core in a Chevy express 1500
Remove the water supply hoses from your 1985 Chevy heater core. Remove the heater core retaining bolts. The heater core will come out. Reverse the process to install your new heater core.
Begin by removing the water supply hoses from your 1989 Chevy heater core. Remove the heater core retaining bolts. The heater core can be removed.
On a 1993 Chevy G-20 van, the heater hose is typically located on the engine compartment's passenger side. One hose runs from the engine’s water pump to the heater core, while the other returns from the heater core back to the engine. You can follow the hoses from the firewall, where they connect to the heater core, to identify their paths. Always ensure the engine is cool before inspecting or working on any hoses to avoid burns or injuries.
Drain the water from your 1998 Chevy Astro cooling system. Remove the water supply hoses from the heater core. Remove the heater core retaining bolts. Reverse the process to install the new heater core.
The 1988 Chevy G 20 Van heater core can be found behind the passenger side kick plate. You will need to remove the kick plate in order to access the heater core.
I have a 1993 Chevy lumina van that has heat but doesn't have a fan how do I fix the fan?
your heater core is bad
To change the heater core on a Chevy G-30 series van, first, disconnect the battery and drain the coolant. Remove the dashboard and the heater assembly to access the heater core, which is typically located behind the firewall. Disconnect the heater core hoses, remove the mounting screws, and take out the old heater core. Install the new core, reassemble the heater assembly and dashboard, and refill the coolant before reconnecting the battery.