Square body heater core replacement tips

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=C4Itd3u_VN8

It's a time consuming job and it sucks. Replacing my heater core on my 1987 GMC Sierra square body truck. Same as C 10 WITH AIR CONDITIONING.

heater core, C10, K10, C20, K20, 1500, square body, square, body, R1500, R2500, SWB, LWB, swb, lwb, short bed, long bed, core, heater, heater box, removal, installation
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