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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 396 (Engine Controls - System Testing & Engine Component Tests - 3.1L) >> Emission Systems & Sub-Systems >> Fuel Tank Leak Test >> Test Description

Test Description

WARNING: This page is about a different car, the 2003 Pontiac Grand Prix, 2003 Chevrolet Malibu, and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

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

  1. 3  - This test is to locate fuel leakage in the fuel lines.
  2. 4  - This tests for fuel leaks below the fuel tank fuel level.
  3. 5  - This test is to locate fuel vapors escaping above the fuel level in the fuel tank.
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