2021 GMC Sierra 2500HDThe 2021 GMC Sierra pickup truck gets a price correction that lowers the cost of the 3.0-liter turbodiesel engine by $1,500, compared to last year, the truckmaker announced Tuesday. New available trailering technology and a broader rollout of the six-way Multipro tailgate highlight the other changes for the 2021 model year. Introduced for 2020… a href=”https://www.thecarconnection.com/news/1129615_gmc-drops-price-on-2021-sierra-pickup-turbodiesel-adds-trailering-features”>High Gear Media Network