I am having the same problem, my issue is a broken vacuum line from the pasenger side of the van to the engine. I am trying to find a diagram so that I can fix it.
The temp blend door up front is malfunctioning.
Blue port. If you have the rear air then the charge will be greater than front air only.
Mombasa Air Safari was created in 1985.
East African Safari Air was created in 1989.
Take the air box off in front of car it will be on the throtle body on front left side
You have a vacuum leak. Usually find the hard thin vacuum line that runs from L/H top of the engine acroos the front and over to th eR/H fender broken. But it could be from any part of the vacuum system.
round cylinder on front of air ride compresor
Left front frame rail under air cleaner.
To bleed the brake system on a 2000 GMC Safari van, start by ensuring the brake fluid reservoir is full. Begin at the wheel farthest from the master cylinder (the right rear), loosening the bleeder valve and having an assistant press the brake pedal. Once fluid flows without air bubbles, tighten the valve, then move to the left rear, right front, and finally left front brake in that order. Check the brake fluid level frequently and top off as needed during the process.
Under the front seats
located in the front right side conected to the air filter...
On a 2000 Lincoln Navigator : The switch for turning OFF the air suspension compressor is located in the front passenger footwell , by the kick panel