Check Engine Light Due to Gas Cap Issue on Oldsmobile Bravada

A Loose or worn gas cap may cause Check Engine Light to illuminate.

RepairPal Verified
Average mileage: 122,210 (59,475–215,000)
9 model years affected: 1996, 1997, 1998, 1999, more2000, 2001, 2002, 2003, 2004
18 people reported this problem
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problem details
took the old cap and replaced it with a locking one
2003 Oldsmobile Bravada 118,000 mi,
Check engine light comes on when gas cap is loose.
1999 Oldsmobile Bravada 215,000 mi,
When I went to emissions they told me it was the gas cap that had my vehicle not passing. I bought another one from dealership, 3 years later it done the same thing.