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Home >> Buick >> 2008 >> Allure CXL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Control System & Fuel System - 5.3L - Introduction (2 Of 2)) >> Description and Operation >> Evaporative Emission Control System Description >> Check Gas Cap Message

Check Gas Cap Message

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The control module sends a class 2 message to the driver information center (DIC) illuminating the Check Gas Cap message when a malfunction in the evaporative emission (EVAP) system and a large leak test fails.

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