( https://www.allTFL.com ) Check out our new spot to find ALL our TFLstudios content, from news to videos and our podcasts! Not only does the 2023 GMC Sierra 1500 sport the half-ton's recent facelift and the luxurious Denali Ultimate trim, but this year also sees the new LZ0 3.0-liter Duramax turbodiesel. We already know its an efficient powertrain, but here's a critical question: Will leaving the truck in AWD mode (4-Auto) *kill* your MPG versus actually switching the truck into 2WD mode? Andre and Nathan find out! ( http://www.patreon.com/tflcar ) Visit our Patreon page to support the TFL team! Watch more videos from TFL Studios: The Fast Lane Truck ( https://www.youtube.com/tfltruck ) The Fast Lane Car ( https://www.youtube.com/tflcar ) TFLoffroad ( https://www.youtube.com/tfloffroad ) TFLbike (https://www.youtube.com/channel/tflbike ) TFLnow ( https://www.youtube.com/tflnow ) TFLclassics ( http://www.youtube.com/tflclassics ) TFLtalk (https://www.youtube.com/tfltalk ) TFL Podcasts: TFL Talkin' Cars Podcast ( https://redcircle.com/shows/tfltalk-car-podcast ) TFL Talkin' Trucks Podcast ( https://redcircle.com/shows/tfl-talking-trucks-podcast ) #gmc #sierra #duramax
