2005 Suburban auto climate control front blower not working properly

[Dietz]

Hello,

This past week, my front blower (fan) for my automatic climate control stopped working properly. Seems like SOMETIMES it will blow out a tiny bit of air, however it's not right. No change in performance of the blower if I set it to high, low, AC, heat, defrost, etc. I replaced the fuse for the blower. No change. Anyone else have a similar problem? I have heard that there is a resistor near the blower motor that may be the culprit. Please share your insight, if you have any on this. THANKS!!!

[j cAT]

Originally Posted by Dietz

Hello,

This past week, my front blower (fan) for my automatic climate control stopped working properly. Seems like SOMETIMES it will blow out a tiny bit of air, however it's not right. No change in performance of the blower if I set it to high, low, AC, heat, defrost, etc. I replaced the fuse for the blower. No change. Anyone else have a similar problem? I have heard that there is a resistor near the blower motor that may be the culprit. Please share your insight, if you have any on this. THANKS!!!

auto ac system has a computer controller ....when this goes bad the system will not properly work including the fan....

the manual ac system uses external resistor module that is what I have and this is about 25.00..

the auto ac controller is about 100.00 or so ...

[Dietz]

Autozone tells me they have a blower motor resistor for the Automatic Climate Control system for a 2005 Suburban. Does this make sense? Does the Automatic Climate Controls system even HAVE a resistor that is separate from the control module???

[mblumhardt]

I seem to have the same issue. I also have climate control. I have approx 12 volts power coming out of what I think the blower motor resistor (three leads in (hot, ground, control) and two leads to the fan). When the console fan speed selector iis on full the fan clunks and and rotates just a bit but doesn't take off. When the selector is anything lower, no clunking and no roation at all. I connected a new blower and it has the same behavior.

[mblumhardt]

Originally Posted by j cAT

auto ac system has a computer controller ....when this goes bad the system will not properly work including the fan....

the manual ac system uses external resistor module that is what I have and this is about 25.00..

the auto ac controller is about 100.00 or so ...

Do you know approx what a shop would charge to remove/replace to auto ac controller? Or is this something I could do myself with relative ease?

[j cAT]

Originally Posted by mblumhardt

I seem to have the same issue. I also have climate control. I have approx 12 volts power coming out of what I think the blower motor resistor (three leads in (hot, ground, control) and two leads to the fan). When the console fan speed selector iis on full the fan clunks and and rotates just a bit but doesn't take off. When the selector is anything lower, no clunking and no roation at all. I connected a new blower and it has the same behavior.

remove the blower motor fan assy..connect the resistor motor connector to your blower motors with this on the floor . see if the blower works ..if so see whats interfering in the ducting with the blower movement ...

[mblumhardt]

Originally Posted by j cAT

remove the blower motor fan assy..connect the resistor motor connector to your blower motors with this on the floor . see if the blower works ..if so see whats interfering in the ducting with the blower movement ...

The new blower I connected was never mounted. It was on the floor. So nothing was obstructing it. Yet it behaved the same as the old blower. So this means to me its electronic. Like an AC control module mentioned above. Its located adjacent to the blower, right? Parts stores don't seem to know what this is, and the photos they pull up are not correct.

I will call a Chevy dealer parts dept tomorrow AM to see if they know of this part.

[j cAT]

Originally Posted by mblumhardt

The new blower I connected was never mounted. It was on the floor. So nothing was obstructing it. Yet it behaved the same as the old blower. So this means to me its electronic. Like an AC control module mentioned above. Its located adjacent to the blower, right? Parts stores don't seem to know what this is, and the photos they pull up are not correct.

I will call a Chevy dealer parts dept tomorrow AM to see if they know of this part.

read my posting #2 here.

I thought you bought new resistor module.
don't buy the computer module at dealer cost toooo much ..you can get other places for 80-100.oo ....