Had the same issue yesterday @ 4:00 a.m. and -10 windchill. Thanks to this forum and heated seats!! I just cut away the burnt port on the end of the red connector with a dremel tool and replaced the burnt pin with a female spade connector. Plugged the remaining connector back in. Finished in 20 minutes and good to go. Thanks guys!

 

I have replaced the resistor and the wiring harness again but this time the motor is still not working??? I hook the motor direct to a 12 volt source and it worked. I also checked the voltage at the wiring harness at the motor and relay and it only has about 4 volts then when I turn the switch on and it goes to 0 volts. I have checked fuses and switched the relay with others with the same results??? Any suggestions for this cheap shade tree mechanic?

 

please any help!!!!!!

 

Check power at the fuse box. If you have power there then it may be some wiring under the steering column. It's what runs to the control switch itself, easy to trace. That's what happened to mine. Replaced the burnt part of that wiring and good to go.

 

mine just now started doing this

 

yep pulled the resistor out and she's brunt

 

Follow CDobis on this one! Here is some more to add Craigs post:
Blower motor stopped. Pulled the wiring harness (four connections). You will need to remove the right hand side of the dash (remove the two plugs on the front on the edge of the glove box door and then gently pull the right side of the dash out towards the passenger door as it is a press fit piece) and drop the glove box. Remove two screws which hold in the resistor (under the dash). Cut off orange connector from the wiring harness to the resistor (five wires) which had melted together with the resistor and did an Ohm test on resistor which appeared good. Trimmed the white plastic around the resistor connector end and stripped harness wires and soldered the wires to the resistor directly. Remember to "tin" the wires and flat pins on the resistor to properly solder the two together. Re- installed wiring harness. A/C - heater fan motor purrs like a kitten. Seems to be a common GM Canyon and H3 problem. Probably should have been a recall as it is a fire hazard. Never needed to buy a part. Freebie and about 35 minutes of actual work. YouTube helped. Use the same search that brought you here.

 

I can't see the pics on how to fix the ac problems it just started yesterday

 

Ok, I read all of your fixes and am very impressed with what you've done.

This is what I did: I removed the resistor and unplugged it. After it was unplugged I took a small machinists awl or pick and with the pointed end I inserted it in the top of the connectors and bent the top or snap part down and then pulled the wires all out the back end. The only one that was hard to get out was the "A" wire because it was melted into the plug. When I got it out I had the wires and the plug separated. I found a dealer, Sands Chevrolet in Phoenix, Arizona who stocks a new plastic plug end and I bought one from them years ago; and it burned up, and this is now the second fix that I've done, since the last time I only put the new plug on and put the wires in place and plugged it back in. If your plug is burned, like mine is now, but not too badly you and use the existing plastic.

I then cut marked all of the wires, "A, B, C, D, E" according to their position on the resistor. If you look into the body of the resistor and on the plug you can see the corresponding marks there too.

I then bought some blue female wire connectors, making sure that I got the ones that were small and would fit the spades on the resistor and put them on all of the wires; cutting off just the old ends. I put the plastic end back in place on the resistor and shoved all of the new female connector ends back into their corresponding holes and made sure that they were well seated. The plastic connector separated them and kept them from grounding on eachother, thus eliminating the need to tape the ends.

Also, if you have a home improvement store or auto parts store in your area you can buy some shrink casing that you put on wires and heat them up with a hot blow dryer and that will shrink the casing over the connector ends and be a better fix than using tape, as tape may have a tendency to come loose or be too thick. The shrink casing is a great insulator.

I did this all while it was still in the Hummer and didn't take the harness out........as I knelt on the ground to do it.

I threw it all back together and "voila" my wife is happy and I don't have to worry about it again.

I'd post pics, except I can't see those that have been posted and so I've decided not to try.

 

Never, say never!

I too had to do the electrical connector repair, and it worked! However I checked amperage draw afterwords and it was excessive. Looking closer at the resistor it was rusted/distorted, so I replaced the resistor and all is normal. no cost to repair the wiring and the resistor replacement(ac delco 15-80647) was 18.00 shipped from APT.