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2001 Chevy Astro Blower fan speed

Tiny
SUNLAKES
  • MEMBER
  • 2001 CHEVROLET ASTRO
Electrical problem
2001 Chevy Astro 6 cyl All Wheel Drive Automatic

Fan does not work in high. Replaced resistor, replaced vacuum hose, checked fuse; have voltage at fuse box and plug to blower fan.
Saturday, June 27th, 2009 AT 2:54 PM

3 Replies

Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
He high speed is controled by a relay.
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Monday, June 29th, 2009 AT 4:43 PM
Tiny
SUNLAKES
  • MEMBER
  • 2 POSTS
Where is the relay located? Is the relay and resistor the same part or is there 2 relays? I changed the resistor inside the heater core cowling (passenger side of engine compartment behind windshield washer and overflow tanks).
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Thursday, July 2nd, 2009 AT 7:33 PM
Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
I'm sorry I was wrong, your van has a resistor / relay as an assembly.

The low speeds go through a 20 amp fuse.
But the high speed goes through a different 30 amp fuse. That is under the hood.

Check that. And let me know.
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Thursday, July 2nd, 2009 AT 9:00 PM

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