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I need a vacuum line schematic 2003 gmc safari

The line comes from the Air condidtion system

Posted by Anonymous on


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  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 12 Answers

SOURCE: 2006 gmc canyon 3.5 inline 5 cyl.

Not much of a vacuum diagram on this vehicle. Uses vacuum mainly for the EVAP system ( not a good source). Best bet would be to use a source that stems directly from the intake manifold. Good luck

Posted on Jul 07, 2008

  • 491 Answers

SOURCE: I need a vacuum line schematic for a 2003 chevy

Replace the complete heater control vacuum line over the motor with rubber vacuum tubing.
The heater vacuum line connects on the drivers side of the engine halfway back on the intake manifold.Run the new line to the heater vac connection at the passenger side at the right front in the engine compartment.
I change 2 a week....this should be where your problem is.

Posted on Sep 09, 2009

Testimonial: "That took care of it. I did change from that small vacuum line to the large rubber and ran it up to a wire loom overhead so as not to get as hot."

  • 60 Answers

SOURCE: looking for 1995 volvo 850 turbo vacuum line schematic diagram

This is for a 98 T5, but it should be close enough.

Posted on Oct 20, 2009

  • 85 Answers

SOURCE: no air coming out of vents on 2000 gmc safari

it sounds like the hvac mode acuator which controls where the air goes. if it still blows through def or floor thats what it is

Posted on Feb 24, 2010

  • 524 Answers

SOURCE: Need 95 gmc jimmy vacuum diagram. I have a loose

THat goes to your map sensor. If you look very closely under your hood there will be a vac line diagram there

Posted on May 09, 2010

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1 Answer

2002 gmc safari van defrost blow cold, a/c blow out of defrost

open the hood and check for leak on any plastic vacuum lines.

Oct 19, 2012 | 2002 GMC Safari

2 Answers

My 2003 safari air vents are not working properly. The fan motor works in all speeds but air mostly only comes out of the defrost vent. What do I do. Thank you in advance. Jack

It sounds like vacuum is not getting to the vent, heat and A/C controls. Find the vacuum can. It may be under the hood on one of the inner fenders. The "one-way" check valve is usually located in the line and close to the can, make sure it works properly. The valve could be the very thing that's causing the problem. Trace the lines back to the vacuum block at the intake manifold or fire-wall, and also back to where the line goes thru the fire-wall. Check the can for leaks or obvious holes. They used to be just a plain metal can, but it could be a plastic ball. Check the lines as you go, for breaks and rub-thru's. Move the controls thru all settings and listen for vent door movement. Worst case is a bad vacuum motor or air flow position selector switch, and/or a faulty Blend Door Actuator. If you have been driving around with the Temperature knob or control set at the same spot for months, move it from fully cold to fully hot several times and wait for the air temperature to change each time. This will help reset the blend door and vacuum control system. Hope this helps... Let me know what you find.

Aug 24, 2011 | 2003 GMC Safari

1 Answer

1999 gmc safari blower motor works perfect but no air comes out of the ac vents only defrost vent works

you have a sucked shut or broken vacuum line under the hood somewhere. mine was burnt and broke, same problem. it is a little, skinny, hard vacuum line from left side of motor over to right across the front.

Jul 10, 2011 | 1999 GMC Safari

2 Answers

When switching the a/c on the blower comes on, but sometimes no air comes out of vents

sounds like a blower motor resistor. Does it only do it at one speed or a couple or all

May 25, 2011 | 2003 GMC Safari

1 Answer

2003 safari- I have no heat in my interior and my engine within about 10min of driving goes to the red area of the heat guage and the "Check guages" light comes on.

You are out of water ... or there is a big air bubble in your system. If you can loosen one of the neater hoses, you can let the air out ... and fill with water. If you are in the North ... I suggest you add anti freeze fter you get the air out of the system.

Nov 26, 2010 | 2003 GMC Safari

1 Answer

Vacum line to hvac where does it conect to engine

Hello Mr. Wilkins.
It hooks up to the throttle body and can be difficult to find.
Looking into the engine compartment from the front, look to the left of the air intake near the throttle body at the top center of the engine. You may need to take off the air cleaner assembly to allow better access.
Have a good flashlight handy as that may make it easier to locate.
I use some rubber vacuum line to reconnect the heat-broken plastic line.


Apr 22, 2010 | 2003 GMC Safari

1 Answer

Air out defrost only

The vacuum line is not connected or broken. You will find one plastic line under the hood, it will have a break in it somewhere.

Jul 13, 2009 | 2000 GMC Safari

1 Answer

1999 gmc safari van upper vent

Check under the hood for deteriorated small vacuum hose coming off the intake over to the heater box area.
Repair the vacuum hose.

Oct 21, 2008 | 1999 GMC Safari

1 Answer

A/c control for dash

If you only get air blowing from the defrost & foot level vents check & replace the hard plastic vacuum lines under the hood with rubber vacuum line. That will fix your problem

Jun 23, 2008 | 2001 GMC Safari

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