Heater Motor Resistor Question(s)
 

I have an '06 LT with over 81,000 miles and the heater motor just quit working on the lower speeds. I used the search and found 17 pages of posts on heater problems and it appears to be a blown resistor causing the heater to only run on the hi speed.

Because I'm waaaay out of warranty I would rather not take it to the dealer like most of the ones with this problem have done. Does anyone know where the resistor is located and/or have any info on the type, size or part number for this resistor? :confused:

Thanks,

Dan

when it goes out you have hi and off. The resistor is close to the heater on the firewall/floor area

Thanks Tom, I'll poke around that area and see if I can locate it.

Usually a water leak is the cause of the resistor blowing. Here is a thread that can help you with both.

https://www.chevyhhr.net/forums/how-tutorial-library-21/fixed-my-water-leak-last-night-14263/

Here you go :thumb:

Thanks Guys. Didn't find any water on the carpet or floor mat and couldn't feel any on top of the carpet thingy that covers the bottom of the blower motor. It didn't get much above 20 degrees today so I didn't spend too much time outside looking into it.

Tomorrow I'll get down to that rubber cover and get the resistor pulled out. Is there any way to check the resistor with some type of meter to see it it is bad?

Chevy Mgr, thanks for that link, I must have missed it in the 17 pages of threads I read after doing a search.

you can check it with a dvom. here is the wirring diag. but I'm sure that if you replace the resistor your blower problem will be corrected. :smile:

Thanks Lucky. I pulled the cabin filter out and it was dry as a bone with no evidence of any water spotting or moisture. There was no evidence of any moisture around the resistor area, fan moror area, firewall or carpet.


I was able to pull the resistor with one hand thru the glove box opening holding the retaining clip open and one hand from underneath pulling the resistor down. Local Chev dealer had 1 in stock for $50.15, Part # 158189-10. Much closer Napa dealer did not have 1 in stock was was only $36 plus $6 shipping from Va. Would have been 2 days but Post Office is closed today so will probably be 3 days. It's cold enough here to run the heater on high anyway so I'll wait for NAPA.

The cabin filter was slightly gray and had 3 pine needles trapped after 26,000 miles and 1 year. I had a new one on the shelf and put that in, but did notice that they are now "Made in USA". The last one from NAPA was made in Poland.

Skyeglen,your local Chevy dealer is boning you.Regular list on #15818910 is $40.97(plus tax).

Oh yeah. Sometimes he's the only game in town... like the $30.32 rear wiper blade insert, all 10 1/4 inches of it. That was b/4 any of the parts stores carried that item. Definitely pays to check around.