Check for a vacuum leak either under the hood or under the dash
Check the operation of the vacuum actuated motors under the dash
Check the operation of the selector switch
Defrost is the default position for this system
get a new heater switch
heater sensor circuit Chevy astro 2000
How do you change a heater core in 1994 chevy astro van?
On dash Switch that says vent heat, a/c defrost etc.
You can find the block heater cord behind the grill of your 2001 Chevy Astro. The cord will be on the drivers side of the grill.
The 1997 Chevy Astro fuel relay switch is located on the firewall in the engine compartment. The fuel relay switch will be in the center of the firewall.
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.
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how to remove heater core 87 Chevy astro van. like to have diagram.
johnny frank
You will need to remove the ignition switch retaining ring in your 2002 Chevy Astro Van. Slide the ignition switch out. Remove the wiring harness from the end of the ignition switch. Reverse the process to install the new ignition switch.
The heater resistor on a 94 Astro is located on the top of the heater box under the hood, it has a four or five wire plug on it and two 6mm screws hold it in a hole in the heater blower box.