Gmc duramax mpg sierra denali Sierra drw 4dr cab 3500hd groovecar 2020 gmc sierra 3500 denali duramax diesel mpg test, review
2009 GMC Sierra 3500HD 4x4 SLT 4dr Crew Cab LB DRW - Research - GrooveCar
2009 gmc sierra 3500hd 4x4 slt 4dr crew cab lb drw
2009 GMC Sierra 3500HD 4x4 SLT 4dr Crew Cab LB DRW - Research - GrooveCar
2020 GMC Sierra 3500 Denali Duramax Diesel MPG Test, Review - YouTube