With the back wire hooked up I ran a jumper directly to the battery pos and attached it the purple wire terminal on the motor. Replacing the blower motor resistor The information contained in this video is for general guidance, not responsible for any errors or injuries that you have done. You may want to consiered trying to squeeze a wire brush in there to clean it up then anti-ox it so there aren't any problems. The one I need is really thin and flat. The long-lasting design resists thermal fuse failure, overheating, and burnout. The next step is to test terminals 2 and 3 by using the jumper wires. I put a new resistor in.
The motor did not come on. Thanks guys for the help! Or add another one to make sure its grounded good. The blower motor resistor in your Chevy is responsible for regulating voltage and changing the speed of your blower fan. If you take it off the wire should read negative or ground to the frame the same potential. The next step requires a jumper wire which you will be using to check the operation of your resistor. No matter the situation, Advance Auto Parts has the Blower Motor Resistor product you desperately need.
If you have 12 volts at all three pin locations, this means you can continue with the testing procedure. And 2 does anyone know what I can find that thin resistor for a. Ratchet Pocket Screwdriver 2004 Chevy Suburban. How do you test your Suburban resistor motor? We only sell parts from trusted brands like so that you can find quality parts you can count on. So either my motor is dead shorted or something has gummed up the brushes or they are worn out.
Fan quit working on all 4 speeds. Control knob only worked one 5 setting and this part is what was needed! What is this pointing to? I have exactly the same problem. Paperwork says 2001 My blower motor stopped working. When your blower motor starts to fail, your air conditioning or vents will operate at just one speed or not at all. Correction assuming 97 is same probably is. What is the next step? The fan runs good when direct power is hooked up. This is the circuit that utilizes M1.
Leave us a message below and let us know! This tutorial assumes that you are comfortable working around the electronics of your 4. When I have the key on, I have 12v power to the purple power wire in the first 3 settings, but the 4th setting gives me no power. The site is fully functional and ad free! The other ones while shopping around I can get for like 20 bucks. Anyone ever measure what voltages are normal to speeds? Again you should see your vents blowing at maximum, and if you dont see this result it means that your resistor is bad and should be replaced. Maybe I bent one of the wires on it and it is touching another now to cause high not to work? Found the one I needed unfortunately it broke before I got to the check out. I spliced into the blower motor ground wire and grounded it to the frame under the dash. That is just not acceptable.
So my ground is bad. Is the relay the square box on top of the air box that I cannot see the connection unless I remove it and the bracket? I wanted to fix it properly, but I needed the Suburban right away. Your truck knowledge is missing! I just figured it was the resivor couldn't find any blown fuses while taking it out it snapped. Went to the local pick and pull. The four wires are labeled 1-4 in the diagram below, and the pinout of the resistor is listed below. I couldn't tell where that ground wire leads to see if it worked its way loose.
Welcome to The Truck Stop!. Have any questions about our How to guide on testing a Chevy Suburban blower motor? Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Blower Motor Resistor stock in-person! I rarely ever run a fan on high so I won't miss it, but out of curiosity, why would the first 3 speeds work but not high? Where does the ground wire attach to the inside of the cab? Might clean the cab body to engine ground wire on the firewall. If your resistor is beginning to go out, it can cause several symptoms, from screeching or odd noises to your blower motor only working at full blast or at maximum speed. When fan is on high the circuit bypasses the fan speed resistors and supplies 12 volts to the motor from this relay to the motor directly. On top of low prices, Advance Auto Parts offers 6 different trusted brands of Blower Motor Resistor products for the 2000 Chevrolet Suburban 1500.
Fan relay is as posted before on top of the duct work left of the resistors you can see both behind the glove box if you take it out. I tried to follow it, but it seems to go into a harness and is wrapped to where it can't be seen. So I put the motor back in place and hook the purple positive back up and then ran a jumper from the negative terminal on the motor to a ground under the dash. The black ground wire has low power when I hook up a test light to it???? This part from Advance Auto is what you need. I've checked the fuse in the dash fuse panel and it is good.
Now I have the first 3 speeds working but the motor still doesn't blow on high. I had this happen on another truck once a dirt dobber or wasp was sucked through the duct work and ended up getting caught between the motor brushes and armature contacts. It is a generic part but once wired properly it did work. But they didn't seem to have the thin ones any suggestions? Doing so can cause a permanently open condition, and prevent your resistor from ever working. I couldn't easily find where the ground wire led to and didn't feel like taking the time to tear the dash apart. Went to auto zone and they said the part I needed cost like 250. This part from Advance Auto is what you need.
My blower motor spins when I hook 12v directly to it. The design resists thermal fuse failure, overheating, and burnout. I think my motor has gone bad as I get continuity to ground touched dash brace to black wire and get continuity. The purple wire should have battery voltage ~ 12V when on hi. Once you have the resistor removed, flip it over to inspect the wiring.