This video will show you how to replace the engine block heater and cord plus drain and refill the cooling system on the 6.6 Duramax Diesel engine found in the GMC Sierra and Chevy Silverado trucks. This was done on a 2005 LLY Duramax but will be similar on various years and models of the Duramax. Block heater, cord, and coolant was purchased from Amazon and I will provide links below.
GM Block Heater: https://amzn.to/3DJhyus
GM Block Heater Cord: https://amzn.to/3T5XGWZ
Dexcool Concentrate: https://amzn.to/3U5Uprk
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