A Loose or worn gas cap may cause Check Engine Light to illuminate.Google+
Car Problem Reports
Buick Enclave Check Engine Light Due to Gas Cap Issue
Buick Enclave Problem
Average Mileage: 75,416 mi (52,000 mi - 146,000 mi)
engine light is on and we are trying to solve the problem. I will look into the gas cap as well.
Visitor, 2008 Buick Enclave, 69,574 mi
check engine light has been on 3 days - OnStar says it's a loose gas cap but I've tightened it 3 times and the light is still on. 2nd call to OnStar said "Car has to be driven normally for 7 times and the light will go out"??? Why 7 times?
Visitor, 2008 Buick Enclave, 146,000 mi
check engine light came on today, can you tell me what might be the problem?