Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2001CAVALIER LS, 2.4 TREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 271 (ENGINE CONTROLS (INTRODUCTION) -- 5.7L)DESCRIPTION AND OPERATIONEVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM DESCRIPTIONCHECK GAS CAP MESSAGE
2001 Chevrolet Cavalier LS, 2.4 T
Check Gas Cap Message
2001 Chevrolet Cavalier LS, 2.4 TSECTION Check Gas Cap Message
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
The PCM sends a class 2 message to the driver information center (DIC) illuminating the Check Gas Cap message when any of the following occur:
- A malfunction in the EVAP system and a large leak test fails
- A malfunction in the EVAP system and a small leak test fails
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.