How To Install Fan Speed Control Blower Motor Resistor Chevy Silverado GMC Sierra 99-06 1AAuto.com




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Joseph Direnzo: Followed and replaced it was great but blew out my resistor , tried again secound time change harness and resistor blew out again any suggestions no idea what is happening thanks Joe

wasted/time/traveler: What about if the fan comes on full blast when the truck isn't even on..?..thats what my 05' silverado does..i go out in the morning to start it up, and it's blowing on high..

Walter Erhart: Dear Mike Green, I am no the type of person who does a lot of repairs on his vehicles. Praise the Lord, with your video, it gave me the confidence to do it. Everything is working ok now and I really Praise the Lord for you and your video. Thank you.

Drago P: After its done getting cold here, im going to deff get mine replaced, its a 2005 Silverado an the 1 & 2 settings do not work.

Brad J: Thanks bud!

wakeywakey: i have a 06 but cant get it to unplug even when i lift the catch

Loose Drag: Replacement worked exactly as described. My '01 Silverado has only had fan speed "5" working for years. Had an auto electrics specialist tell me to "just get a new a/c control panel. About $100 for parts, plus labor." Your video has me up and running for under $25. If I wasn't hitting the hiway tomorrow, I would have bought my resistor from you. You've earned my respect, and I'll make sure I check you first next time I'm diagnosing a problem with my truck. Again, many thanks!!

Keith Lavallee: My 2001 lost high speed only. I had no power at "Terminal ā€œGā€ Orange with ignition on, as its supposed to receive constant power from hvac 30 amp fuse under hood. the fuse tested good, so i pulled the fuse block out and followed the two fat orange wires, the burnt one will be obvious, cut and add wire to hard wire to positive bolt, then add a 30 amp inline fuse inside the cab. black out the fuse location. Finally high speed a/c

Him Self: Was very helpfull

John Deer: Good video. I will be purchasing one from your shop soon.

chris c: got a 1998 chevy 1500c basicly same problem except mine just doesn't shut off in the off position just stays on full speed and if i wiggle the knob or press on it, while it's on full speed it shuts off until i wiggle or press on it again think this would be the resistor or the fan speed control knob switch its self. any ideas?

artifactman660: I changed the resister still nothing, going to change the motor tomorrow I hope that fixes it.

RBG0979: Great video as usual. Many thanks.

Jacob Taylor: I am having a similar problem with my 2003 Sierra 2500HD. The A/C works when I drive it will blow out the vents, but the fan will not come on at all. I have the digital display with dual climate control. I am wondering if this is different? Thanks

Sal C: Hey thanks for the video! I just purchased a ac control module from 1A auto for my 2005 gmc sierra 2500hd. but I was curious if you knew where I can't get a wiring diagram for the system? Due to the previous owner installed a toggle switch running under the dash to two wires and when you flip the toggle switch the AC turns on but I don't like to have it rigged that way that is why I purchased the new module

Endless Florida: My 99 GMC sierras does the same thing. The AC only works when it is on level five. But when I accelerate the vehicle and the AC is on the engine makes a funny noise. The noise will stop as soon as I turn off the AC. What do you think that is?

mike johns: hey 1aauto I have a suburban but neither 1-4 blow air from the vents can the blower be the problem?

Mike Wheat: I replaced the resistor and I don't have speed 5. All but 5 works. Replaced wiring and block that connects to the resistor as well and no 5th speed. The resistor is bypassed to get speed 5. What is there left to check, fan control? The relay is built in to the resistor correct?

Scott Eckelberg: this helped alot

Joey Russell: This video was exactly what I was looking for! I will be ordering and replacing in my 04 Silverado. Also my setting dial doesn't work so it will only blow out of the defroster. Have you made any videos for that or any advice for me to fix it? Not a problem I've ever dealt with before. Thanks!

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