Question about 2005 Chevrolet Silverado
You say the blower goes on/off at any speed?,you mean if on high it cuts off?,on low it cuts off?sounds the same???. Try putting a continuity lamp at the fuse box and watch(someone watch)to see if light goes on/off;"could" be power is disconnected at blower(if light stays on). This is free of cost(s) and somewhere to start. Hope this helps somewhat. Alberto
Posted on Feb 08, 2014
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Posted on Jan 02, 2017
there is no relay for the heater fan it's a 15 amp fuse and is on the accessories circuit. the reostat is responsible for all 3 speeds .with the key off there should be no voltage to the blower motor whether the fans speed fan switch is on or off. the fuse will be located in the fuse paneleither on the drivers left side in the dash or underneath the dash in the fuse block. you have a short in the harness that is under the dash and most likely it's a bad plug on the harness. your going to have to do some searching but that's where the problem short is... please rate
Posted on Oct 04, 2008
SOURCE: Blower motor or resistor?
If it was the motor that went out then it would not blow at all. The resistor is the culprit that starts killing off speeds. It should be about $25 to $30 at an aftermarket store like autozone or advanced auto parts.
Posted on Jan 09, 2009
the resister is usually located in the air box above the passengers feet ,high indicates the resistor needs to be replaced
Posted on Sep 04, 2009
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