Question about GMC Safari
The line comes from the Air condidtion system
Posted by Anonymous on
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Posted on Jan 02, 2017
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
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."
This is for a 98 T5, but it should be close enough. http://www.matthewsvolvosite.com/forums/viewtopic.php?p=93956#p93956
Posted on Oct 20, 2009
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
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