2005 Gmc sierra towing capacity Read Also: 2005 Gmc sierra 1500 towing capacity Towing capacity of 2005 gmc sierra 1500 Towing capacity of 2005 gmc sierra 2500 Towing capacity of 2005 gmc sierra Towing capacity of 2005 gmc sierra denali 2005 Gmc sierra 1500 crew cab towing capacity