Front AC not blowing cold...

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Front AC not blowing cold...

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Chevrolet Forums >> Chevy Trucks, Vans & SUV's >> Suburban >> Front AC not blowing cold...

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Front AC not blowing cold... - 6/10/2007 12:06:01 AM

smithguy

Posts: 3
Joined: 6/10/2007
Status: offline

Here's a tricky one: I have a 1999 Chevy Suburban, 5.7L, V8, 120K AT. It has front and rear AC. The rear AC blows ICE cold, yet the front is barely getting cool (it's there, but the coolnees is real weak). The blower strength is still strong. I've checked the freon (R134a) and all levels look good. Any thoughts on this?
Thanks a million for reading, I'll appreciate any help or suggestions I get.

ALSO: does anyone know where to get a REAL service manual for this truck? my Chiltons is waaay to vague, and really doesn't have specific info on the Suburban.

< Message edited by smithguy -- 6/10/2007 4:21:42 AM >

Post #: 1

RE: Front AC not blowing cold... - 6/10/2007 8:54:17 AM

golfer

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

It may simply be debris ( leaves , etc. ) obstructing the air intake plenum under the cowl.

(in reply to smithguy)

Post #: 2

RE: Front AC not blowing cold... - 6/10/2007 11:51:49 AM

RonH

Posts: 415
Joined: 1/31/2007
Status: offline

Or a door open in the ducting of the front system letting outside air in.

(in reply to golfer)

Post #: 3

RE: Front AC not blowing cold... - 6/10/2007 6:34:19 PM

smithguy

Posts: 3
Joined: 6/10/2007
Status: offline

RonH & Golfer - Thanks a million for the replies, I will investigate those possibilities. I've also heard from other people that the blend door (betwen heat and AC) is vacuum driven, and there may be a compromise to the vacuum system lines (pin hole, broken hose, etc.). Sound feasible?

(in reply to RonH)

Post #: 4

RE: Front AC not blowing cold... - 6/11/2007 4:04:10 AM

golfer

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

You betcha.

(in reply to smithguy)

Post #: 5

RE: Front AC not blowing cold... - 6/11/2007 9:12:07 AM

smithguy

Posts: 3
Joined: 6/10/2007
Status: offline

Thanks again! I'll look into it!

(in reply to golfer)

Post #: 6

RE: Front AC not blowing cold... - 7/3/2007 9:28:13 PM

73shark

Posts: 2135
Joined: 4/17/2006
Status: offline

quote:

ORIGINAL: smithguy
ALSO: does anyone know where to get a REAL service manual for this truck? my Chiltons is waaay to vague, and really doesn't have specific info on the Suburban.

You can get a Chevy Service Manual from Helm, Inc @ http://www.helminc.com

Also an owner's manual from them.

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(in reply to smithguy)

Post #: 7