AC blower problem????

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Aug 29, 2007 | 09:09 PM

01vetteC5

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Instructor

Joined: Jan 2005

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From: Raleigh Nc

AC blower problem????

ok i have a small problem with my ac blower --- it dosnt work on 1 or 2 but it blows just fine on 3 and up??? any idea whats causeing this to happen?

Aug 29, 2007 | 10:08 PM

speedsk899

Burning Brakes

Joined: Mar 2006

Posts: 750

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From: Bedford IN

Well I am not sure what year your car is, But my 99 has the same problem except it is 1-4 that doesn't work and 5 does. On mine there are two control modules, one for 1-4, and one for 5. The one that controls 1-4 went out. I just haven't gotten around to fixing it yet. Hope this helps

Aug 29, 2007 | 10:12 PM

ajg1915

Race Director

Joined: May 2005

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From: West Norriton PA

St. Jude Donor '08

If you have manual system (option C60) more than likely it's the resistor that is in the duct housing on the passenger side.

Haven't fooled around with the climate control system.

Aug 29, 2007 | 11:43 PM

0Doug@MorosoPerformance

Former Vendor

Joined: May 2006

Posts: 718

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From: Riviera Beach FL

If your system is manual it most likely is the resistor, which is located next to the blower. It is not hard to change just a pita to get to. It is about $30 from a forum vendor.

Sep 11, 2007 | 11:43 PM

rio124

5th Gear

Joined: Sep 2007

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From: Plano Texas

I am having the same problem with the HVAC blower only working on 5. Talked to the dealer and there is a TSB on this. Unfortunately it just walks through steps to troubleshoot the problem. He walked through a couple of the steps. I think they were:

Step 1: Replace blower (motor only I think.)
Step 2: Replace control board (for the blower - no idea where it is)

Didn't make it past that. Hope it helps.

-Greg

Sep 12, 2007 | 12:04 AM

ajg1915

Race Director

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From: West Norriton PA

St. Jude Donor '08

Quote:

Originally Posted by rio124

The controller is right behind the blower motor if you have a manual system.

Sep 12, 2007 | 12:15 AM

LoneStarFRC

Team Owner

Joined: May 2001

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From: Dear Karma, I have a list of people you missed.

St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16

Quote:

Originally Posted by ajg1915

If you have manual system (option C60) more than likely it's the resistor that is in the duct housing on the passenger side.

Haven't fooled around with the climate control system.

C60: GM part #15304891 Blower motor resistor

CJ2: GM part #52479971 Blower motor control module

HTH

Sep 12, 2007 | 09:52 AM

rio124

5th Gear

Joined: Sep 2007

Posts: 5

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From: Plano Texas

I just got confirmation that it was the resistor that caused this issue. They also found some debris in the blower (probably leaves from previous owner.) This may have caused the problem.