Blower motor issues?

[JoeFireGuy]

So my blower motor crapped out the other day in the middle of a "Noah-like" down pour here in Denver. I checked the fuses and relays, all seems in order. I checked the switch behind the center console, it seems ok too. When I operated the dial on the dash, I could hear an audible 'click' at the fan by the passenger side A pillar. I pulled the blower motor resistor and the exposed end has a little corrosion on it.
Here's my question...
I had to roto-router the drains for the sun roof like others. Has anyone had water get in there and short out the motor? Do I need a new motor or just a resistor and how do I check? FYI, when I tested the resistor with an ohm meter, I got 9v in the 'OFF' position and 0 in all the others?????

Electrical boggles me, I like stuff I can fix with a hammer and duct tape....

Any words of wisdom will be appreciated.

thanks,

Joe

 

[alrock]

I know there have been issues with the resistors in the blower motors. Haven't dealt with it myself but there are threads on here somewhere.

 

[alrock]

http://www.hummer4x4offroad.com/for...ondition-Problem-Question&p=144901#post144901

 

[JoeFireGuy]

Nice! Thanks for the help. Looks like I'm gonna have to get my head in there a bit more.
Joe

 

[JoeFireGuy]

Quick update following a trip to my local dealer....
they had the wiring harness in stock, they 'sell a lot of these.' $59 or so. The resistor you guys are talking about, Dan says its actually the modulator. Semantics? Apparently, GMC no make - no more. It should be available aftermarket, but no GMC dealer in the U.S. Will have one. Dan gave me this part # 157-91-232 for the modulator if it helps anyone.
Joe

 

[kilroy]

Are you talking about the resistor on the blower motor? If so it should be readily available, bought one myself just a couple months ago and the harness can be rebuilt using a new oem style connector and terminals from your dealer if they would care to order from "Dealer World"

 

[JoeFireGuy]

Maybe yes, maybe no. He showed me the resistor, black, has a flat 4 on the face and a few curly Q springs on the backside? That he had, just not what I wanted. I was looking for the modulator that plugs into the RED flat 5 recepticle on the wiring harness everyone talks about. I've seen pics of the rebuild kit that comes with 5 fuses and all the other plastic parts that are needed to rebuild a burnt wire. That's the part that he says is no longer available from GM.
I was at O'Reilly yesterday and they had a part number for the rebuild kit, just none in Colorado, like $53 or so.
Hi-ho, hi-ho, its to Amazon I go....

Any on-line auto parts sites you prefer?

thanks,
Joe

 

[JoeFireGuy]

Yeah, found it ALL over the net, AC D elco makes one. $18 to $40, "heater blower motor RESISTOR," you were right.

gonna try to track one down in the a m.

thanks for the help people,

joe

 

[JoeFireGuy]

Update...
got the harness in this morning. Works like a charm! The old one is fried just like all the pics you guys have posted. My a/c is still out, gonna have the pros look at it in the a.m.