Uploaded October 2020 | Updated September 2026, 6 hours ago

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Full video, starting with draining the radiator, removal of block heater and reinstalling, then, Refilling the cooling system and removing air pockets.

Truck used in this video 2004 GMC/CHEV 2500HD LLY Duramax.I realize that the sound is off near the end. Sorry about that.

Full Drain and Refill video - youtube.com/watch?v=ysz_wWKL4yo

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Disclaimer - This video is for entertainment purposes. I am not a licensed mechanic. Any and all information or advice given will be used at your own risk. Some models may vary from the truck shown in this video.