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
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Dec 21, 2013 | 2004 Chevrolet Silverado 1500 Crew Cab
Oct 26, 2012 | 2001 Chevrolet Silverado 2500HD
Sep 08, 2011 | 2004 Chevrolet Silverado 2500HD
Mar 01, 2011 | 2004 Chevrolet Silverado 1500 Crew Cab
Dec 30, 2010 | 1999 Oldsmobile Alero
Dec 04, 2010 | 2004 Chevrolet Monte Carlo
Nov 10, 2010 | 2004 Chevrolet TrailBlazer
Feb 10, 2010 | 2004 Chevrolet Silverado 1500 Crew Cab
Oct 07, 2009 | 2004 Saab 9-3
Jul 09, 2014 | 2004 Chevrolet Silverado 1500 Crew Cab
7,917 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: