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Home >> Cadillac >> 2003 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 140 (Engine Controls - System & Component Testing) >> Fuel Systems >> Fuel Tank Leak Test >> Description
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Fuel Tank Leak Test: Description

WARNING: This page is about a different car, the 2003 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

The fuel tank leak test is used to locate any fuel or fuel vapor escaping the fuel tank area. Fuel vapors escaping above the fuel level will be detected when the Evaporative (EVAP) emission leak diagnostic completes one test cycle. The MIL will illuminate after the EVAP emission leak diagnostic completes 2 test cycles only when a condition is detected.

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