Ok, sometimes it just doesn't play nice. Regardless, you will still need to remove the vacuum pump and the canister. I would recommend to evacuate the AC, undue the pipes, and pull it all straight forward as one unit. It is really fast this way!
If you want to leave it hooked up, you need to take off the valve cover, the heat-shield - a few of the push on clips are a PITA to reach or find, and the cover for the coil (rad). Unscrew the condenser from the side as well. To get the coil/exchanger out, you might be in for a fight, but sometimes it comes out nicely. Look at the pictures and see the angle I have on it to get it out. You don't want the HVAC box too far forward, or it will bind on the HPO oil rail. A little tip is to cut 1/2 of the alignment tab off so it doesn't damage the fins.
One of the upper bolts on the top is behind the glove box. go straight up from the lower one that is right by/behind the side kick panel.
Once you get it free, you can pull it up and then pull the whole HVAC box out. You will find it will go in easier.... Same for the AC coil as it is unstuck.
Upper left needs a long extension. The one you see to the right, no need to remove it. The extreme right one is same height hidden behind glove box.
Cover off and ready to remove or install. Note angle. It helps to undue the clips on the one pipe.
Pull it up and forward to make room to pull the box.
Reverse order installation.
One extra shot of the coil/exchanger.
If you want to leave it hooked up, you need to take off the valve cover, the heat-shield - a few of the push on clips are a PITA to reach or find, and the cover for the coil (rad). Unscrew the condenser from the side as well. To get the coil/exchanger out, you might be in for a fight, but sometimes it comes out nicely. Look at the pictures and see the angle I have on it to get it out. You don't want the HVAC box too far forward, or it will bind on the HPO oil rail. A little tip is to cut 1/2 of the alignment tab off so it doesn't damage the fins.
One of the upper bolts on the top is behind the glove box. go straight up from the lower one that is right by/behind the side kick panel.
Once you get it free, you can pull it up and then pull the whole HVAC box out. You will find it will go in easier.... Same for the AC coil as it is unstuck.

Upper left needs a long extension. The one you see to the right, no need to remove it. The extreme right one is same height hidden behind glove box.


Cover off and ready to remove or install. Note angle. It helps to undue the clips on the one pipe.

Pull it up and forward to make room to pull the box.


Reverse order installation.
One extra shot of the coil/exchanger.
