HD fuel economy baby! No one's pushing the envelope on YouTube like we are! The GMC Sierra 2500 HD really doesn't do that bad on the highway with the Duramax diesel engine.

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Sound-system test:    • 2022 GMC Sierra 2500 – Bose 7-speaker...  
Full review:    • 2022 GMC Sierra 2500 Duramax Diesel –...  

We use a Grizzl-E 240V charger for our home EV charging, and you should too! https://grizzl-e.com/product/usa/char...

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Intro music and graphics by Skyler Benn.

This video was filmed with in-ear, binaural microphones, so if you listen with headphones, it will sound like you're sitting in the driver's seat!

#sierrahd #2500 #mpg