HVAC Vacuum line?

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Jan 4, 2015 | 10:42 AM

Extra260

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From: Mebane North Carolina

HVAC Vacuum line?

Working on a neglected 98 C5. Can someone tell me if the vacuum line from the motor goes to the top or bottom fitting on the vacuum cannister check valve?

Thanks
Mark

Jan 4, 2015 | 03:32 PM

zachaeous

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From: USA

vacuum line diagram

Quote:

Originally Posted by Extra260

Working on a neglected 98 C5. Can someone tell me if the vacuum line from the motor goes to the top or bottom fitting on the vacuum cannister check valve?

Thanks
Mark

here is a great diagram of what you are looking for. It goes to the bottom of the check valve.

Last edited by zachaeous; Jan 4, 2015 at 09:47 PM.

Jan 4, 2015 | 04:49 PM

Extra260

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From: Mebane North Carolina

HVAC Vacuum lines

Quote:

Originally Posted by zachaeous

here is a great diagram of what you are looking for. I goes to the bottom of the check valve.

Thanks for the reply! That helps a ton. I wonder what the other check valve and line goes to?

Jan 4, 2015 | 05:03 PM

Extra260

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From: Mebane North Carolina

Quote:

Originally Posted by Extra260

Thanks for the reply! That helps a ton. I wonder what the other check valve and line goes to?

Oooops! I had scrolled down to see the bottom and now I see it is clearly identified. However My shop manual doesn't show that line. Do the all have them? When I got the car the check valve/valves was missing.

Thanks Again
Mark

Jan 5, 2015 | 01:09 AM

LoneStarFRC

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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

Here's a picture of just the OE system, without any aftermarket items added.

Vacuum line #13 comes from the engine, and take special note that vacuum line #5, runs either to item #15 OR item #40, depending on which HVAC system (automatic or manual) is installed on the vehicle. Regardless, it runs inside the car to provide vacuum to the control head in the dash.

HTH

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