Just did this job. Best to think of this as how they install these in the first place on the assembly line. That means there's no seats, no steering wheel, etc. The HVAC system gets bolted to the firewall as one unit. The dash slides on the pins and rotates forward and gets bolted into place. Reverse that and your work will be much easier. I made the mistake of trying to work on the HVAC box in place behind the dash. It can be done, but it's an ugly job.
So with that said, pull at least the driver seat and the center console, if so rigged. Remove the plastic panel below the steering wheel. Remove the two metal plates below the steering wheel. Remove all nuts holding the steering wheel and the cross bar below it, then pull the steering column off the bolts on a bracket closest to the firewall, and it will drop to the floor. Remove ash tray and glove box. Remove bolts holding the dash at the pivot pins on each side. Remove the two bolts attaching the dash to a plate above the glove box. Remove the 3 screws holding the dash across the top (the Rattle Stop Screws). Bag and label all this stuff as you go so you know where it goes on the reinstall. The dash should now rotate down on the pins. You need to rotate it down far enough to be able to clear the brackets above the pins, thus explaining why you need to remove seat and console. It will pull out about 2' without disconnecting wiring. You can then remove the HVAC box through that space. HVAC box is held in place by about 4 or 5 screws and a nut or two from the engine side and one long screw at the top from the cabin side. Need to remove dryer and lower AC line from the evaporator (rear AC on the Burb) and the two lines from the heater core. Once down the learning curve on this, I can see doing this in an hour. That's it from memory. Enjoy the experience.:thumbsup:
