Oldsmobile Achieva Air Conditioner Drain

I'm Intending To Replace, Th Eheater Core; I Was Told That I Would Have To Detach The Drain Tube; Give Insight For This; Please!

I Need To Know Where The A/c Drain Tube Is Located So I Can Disconnect It.

I Was Told Too Detach The Drain Tube, And Disconnect The Heater Hoses From The Core Tubes; But I Don't Know Where There Located, Neither How...

I Mentioned In An Earlier Guestionaire, That I Believed My Heater Core To Be Leaking Antifreeze, And Was Told It Could Just Be A Clogged...