Question about 2004 Chevrolet Silverado 1500 Crew Cab
2004 Silverado Heater/AC Blower on WITHOUT the Ignition Switch ON. Is there a Relay in this circuit? If so, where is it located? None of the under hood relays are identified as controlling the Heater/AC Blower. Have previously replaced both the Blower Motor and twice the Resistor module. Where can I find a schematic for this circuit? What specific color wire is associated with High Speed only? From reading the other difficulties on this site, I find you state that the Resistor is only used for Lower Fan Speeds. Last time the Resistor failed I had no Blower speeds and a Dead Blower Motor. Vehicle was purchased new and this circuit and components seem to be a group of recurring problems. Is the Fan Speed Switch the culprit? The Blower was definitely OFF last evening when I parked it for the night. When I went out to use the Truck today, the Blower was running as I walked up to the truck.
Sign me: Rapid Robert
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
Where is the heater blower resistor located in a 2004 Silverado 1500?
Posted on Nov 22, 2008
The blower motor control module is shorted under right side of instrument panel next to blower motor replace and it will fix
Posted on Nov 29, 2009
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Posted on Jan 02, 2017
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