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#1
06-05-2013, 07:17 PM
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No vacuum at the vent selector
My daughters 2000 Grand Am's 2.4l, vent selector is not working, right now all the vents are wide open. I took the control panel off and found that I wasn't getting any vacuum from the back of the knob, took the passenger underside and glove compartment off found the vacuum lines and wasn't getting any suction from there either. I have no idea where the vacuum should be coming from, I suspect either a bad hose or canister but I have been unable to locate it . If anyone has a diagram for the HVAC vacuum lines or has had this problem any help would be appreciated. Hope someone has the answer cause i really don't want to take the whole dashboard assembly off.
Thanks Chris 
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#2
06-05-2013, 08:34 PM
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Re: No vacuum at the vent selector
The emissions label in the engine compartment shows all vac lines....
Do you smoke? Disconnect vac line from control head and blow smoke backwards to find the leak...
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#3
06-06-2013, 04:34 PM
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Re: No vacuum at the vent selector
Thanks for the response, but yeah I been told that unfortunately it's no longer there. Someone out there has to have the Service manual Volume one (I have volume 2) which shows the HVAC vacuum diagram. Any help, pictures, drawings, crayon sketch something that will lead me in the right direction.
Thanks again.
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#4
06-10-2013, 02:48 PM
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Re: No vacuum at the vent selector
their is a vacuum canister on the passenger side, under the hood. And the vacuum diagram is right their on the strut tower brace. i'll try and get a diagram of this posted ASAP
__________________
1999 Grand Am SS 3.4 OHV 
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#6
06-12-2013, 02:29 PM
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Re: No vacuum at the vent selector
here is the diagram. i would search for broken/cracked vacuum line(s).
__________________
1999 Grand Am SS 3.4 OHV
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| The Following User Says Thank You to xeroinfinity For This Useful Post: | ||
azzanione (06-15-2013)
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#7
06-15-2013, 12:20 PM
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Re: No vacuum at the vent selector
That did it, found the accessory vacuum line to be cracked, repaired it and now it all works. Thanks for all the help could not have done it without the diagram.
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#8
11-21-2013, 02:42 PM
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Re: No vacuum at the vent selector
hello
I have the same problem only the center vent blowing air not lower and defrost...any help would be appreciated...mine is 01 Pontiac grand am gt 3.4L thanks
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#9
11-21-2013, 05:52 PM
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Re: No vacuum at the vent selector
Quote:
__________________
Post back, that's what makes Forums Work.
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#13
12-26-2013, 07:57 PM
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Re: No vacuum at the vent selector
I have a 2003 grand am gt 3.4 and last year i was not getting any heat when i turned the controls, come to find out my Air Vent Blend Door Actuator was bad. Was very easy to replace. Maybe just keep that in mind for the future
__________________
Current Cars 2006 Eclipse GT 6 speed MT (V6 3.8), mods so far- S Tech Springs, after market 18's, 2012 headlight Conversion, Greddy cat back exhaust, CAI, RRE Headers, Polyurethane Motor Mounts, NX Nitrous kit at 100 shot for now, RPM Window Switch, Triple Pod. 2003 Grand AM GT - official beater car for the winter lol ---------------------------------------------------- 95 TSI AWD [email protected] (T-25) Now fully Modded engine with 3,560 miles on it.SOLD
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