air coming only on defrost and floor

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03-14-2010, 10:13 AM

ryanflynt

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Join Date: 03-14-2010

Location: birmingham, alabama

Posts: 4

air coming only on defrost and floor

I have a 2008 hhr and the air blows fine on all speeds just not out of the front vents. It only comes out of the top defrost vents and the floor. I had this problem on my 2000 astro and it was a small vaccum hose, where do i start looking?

thanks for you help
ryan

03-14-2010, 04:31 PM

J W Davis

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Join Date: 09-23-2009

Location: Hurst Texas

Posts: 472

You haven't hit any "birds" on the road have you? Don't ask.

03-14-2010, 10:15 PM

ryanflynt

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Join Date: 03-14-2010

Location: birmingham, alabama

Posts: 4

no i didnt

03-15-2010, 08:17 AM

ZTony8

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Join Date: 04-11-2008

Location: Eastpointe,MI.

Posts: 663

It's likely the mode cam or the link on it is at fault ($42.55 plus tax) unless something got lodged in the heater module to prevent the vent flap from opening.

03-15-2010, 08:31 AM

oneton

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Join Date: 07-13-2006

Location: Geneva, FL.

Posts: 1,567

I am Thinking it.is this

http://cgi.ebay.com/ebaymotors/06-HH...item45f1838c6b

03-15-2010, 10:12 AM

ChevyMgr

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Join Date: 11-23-2007

Location: Texas

Posts: 8,210

Hopefully it's the control head or wiring....anything else will be painful.

03-15-2010, 11:49 AM

ryanflynt

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Join Date: 03-14-2010

Location: birmingham, alabama

Posts: 4

so there isnt a vacuum hose that fell off?

03-15-2010, 02:42 PM

ChevyMgr

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Location: Texas

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Quote:

Originally Posted by ryanflynt

so there isnt a vacuum hose that fell off?

No vacuum involved in this system.

04-02-2010, 02:14 PM

ryanflynt

Thread Starter

Join Date: 03-14-2010

Location: birmingham, alabama

Posts: 4

Quote:

Originally Posted by ZTony8

It's likely the mode cam or the link on it is at fault ($42.55 plus tax) unless something got lodged in the heater module to prevent the vent flap from opening.

where would this be located?