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Home >> Chevrolet >> 2003 >> Impala LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing - 3.8L >> Fuel Systems >> Fuel Tank Leak Test >> Test Description
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Test Description

The numbers below refer to the step numbers on the diagnostic procedure.

  1. - Perform this procedure to determine that no EVAP diagnostic DTC is present.
  2. - This test locates fuel leakage in the fuel pipes.
  3. - This tests for fuel leaks below the fuel tank fuel level.
  4. - This test locates fuel vapors escaping above the fuel level in the fuel tank.