Chevrolet Suburban Air Conditioner Condenser

I Am Replacing The A/c Compressor And The Condenser. Do I Need To Evacuate The System Or Just Put In The R134 And Oil If Needed?

I Was Wondering If Anti-freeze Runs Thru The A/c Condenser In Front Of The Radiator ? Had A Little Front End Damage, Had Grill Replaced...

2001 Chevy Suburban 101,000 Miles+, 3.5. The Air Condition Is Draining In My Back Floor Board. I Can Not Find The Drain Plug For The Rear...