How To Drain Fuel Tank Chevy Silverado. Connect the ground strap and shield back to the fuel tank and lower the silverado off the jack stands. Drop the tank and remove the fuel lines on the top of the tank, turn the ring counter clock wise that holds the siphon and pump in.

On vehicles with dual tanks, the front tank is the main and the rear tank is the auxiliary. A quick video on the easy way to drain your fuel tank.i've done this a few times the hard way of using hand pumps, lifting the tank and pouring out. The low pressure, about 32 kpa (7.