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Home >> Chevrolet >> 2017 >> SS Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls And Fuel - 6.2L (LS3) - Repair Instructions >> Repair Instructions >> Fuel Tank Draining >> Fuel Tank Draining Method 2
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Fuel Tank Draining Method 2

  1. Install the fuel pressure gauge to the vehicle. Refer to Fuel Pressure Gauge Installation and Removal .
  2. Place the bleed hose of the fuel pressure gauge into a suitable container.
    3. NOTE:

    Do not leave the vehicle unattended when performing this procedure.

  3. Command the fuel pump ON with a scan tool.
    4. NOTE:

    Do not fully open the bleed valve on the fuel pressure gauge. To drain both sides of the fuel tank simultaneously there should be a restriction on the flow rate at the bleed hose.

  4. Open the bleed valve on the fuel pressure gauge just enough to cause a restriction to the flow of the fuel rate at the bleed hose.
    5. NOTE:

    To avoid damage to the fuel pump do not allow the fuel pump to run dry while the fuel pump is in the ON state.

  5. Command the fuel pump OFF with the scan tool as soon as it is observed that no more fuel is coming out of the bleed hose.
  6. Remove the fuel pressure gauge from the vehicle. Refer to Fuel Pressure Gauge Installation and Removal .
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