AC/Heat control problems

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AC/Heat control problems

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Chevrolet >> Chevy Cars >> Malibu >> AC/Heat control problems

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AC/Heat control problems - 12/28/2006 6:01:26 PM

malibuman76

Posts: 7
Joined: 12/5/2006
Status: offline

I have been having a couple of problems with my AC/HEAT control module. My Fan setting for 1, and 2 do not work and recently my rear defroster doesn't work ether. Does anyone know what I will have to do to fix these problems?

Post #: 1

RE: AC/Heat control problems - 12/28/2006 10:54:08 PM

Dieselcaddy

Posts: 2
Joined: 12/23/2006
Status: offline

what year?

(in reply to malibuman76)

Post #: 2

RE: AC/Heat control problems - 12/29/2006 6:04:11 PM

malibuman76

Posts: 7
Joined: 12/5/2006
Status: offline

Its a 1997 with the 3.1 liter V6.

(in reply to Dieselcaddy)

Post #: 3

RE: AC/Heat control problems - 12/30/2006 3:25:26 PM

313hitman

Posts: 159
Joined: 10/10/2006
Status: offline

mine is doing the same thing. the a/c and heat only work when the dial in on 3 and up..

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(in reply to malibuman76)

Post #: 4

RE: AC/Heat control problems - 12/30/2006 7:53:58 PM

malibuman76

Posts: 7
Joined: 12/5/2006
Status: offline

Its strange that its donig this. I actully read alot about other people having the same problem but know one has a fix for the problem, its very odd i think.

(in reply to 313hitman)

Post #: 5

RE: AC/Heat control problems - 12/31/2006 8:12:25 PM

golfer

Posts: 610
Joined: 10/8/2006
Status: offline

It's not strange at all ... fairly common problem ...the fix for the fan only working on high speed is the voltage divider circuit ( resistor coils ).

For the rear defroster check the fuse first if that's OK then use a multimeter to check for voltage at the back window contacts , also with your multimeter check the filament grid for continuity.

< Message edited by golfer -- 12/31/2006 8:16:08 PM >

(in reply to malibuman76)

Post #: 6

RE: AC/Heat control problems - 12/31/2006 10:43:30 PM

malibuman76

Posts: 7
Joined: 12/5/2006
Status: offline

This might sound stupid but where is the resistor coils and how would I go fixing it.

(in reply to golfer)

Post #: 7

RE: AC/Heat control problems - 8/14/2007 1:54:34 PM

MalibuRich

Posts: 8
Joined: 7/18/2007
Status: offline

Have you removed your A/C control module and pulled the back cover off your fan speed control switch to see if the contacts are dirty?

(in reply to malibuman76)

Post #: 8

RE: AC/Heat control problems - 8/14/2007 2:50:22 PM

malibuman76

Posts: 7
Joined: 12/5/2006
Status: offline

Actually MalibuRich, I haven't even looked at it. My AC doesn't work so I haven't used the control since winter for the heat. I have found a How-To on this one a Malibu forum. I will be replacing the resistor sometime this fall. I will check the contact before I purchase a new resistor and see if that is the problem. Thank you.

(in reply to MalibuRich)

Post #: 9