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Home >> Chevrolet >> 2003 >> Monte Carlo LS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing - 3.4L >> Fuel Systems >> Fuel Tank Leak Test >> Description
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Fuel Tank Leak Test: Description

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 Emission (EVAP) diagnostics completes one test cycle. The Malfunction Indicator Light (MIL) will illuminate after the EVAP diagnostics completes two test cycles.

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