Check Engine Light Due to Gas Cap Issue on Oldsmobile Bravada

Problem Description and Possible Solution

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

Problem Data
RepairPal Verified
Average mileage: 122,210 (59,475–215,000)
9 model years affected: 1996, 1997, 1998, 1999, more2000, 2001, 2002, 2003, 2004
20 people reported this problem
Viewing 1 - 3 of 3 comments
took the old cap and replaced it with a locking one
Check engine light comes on when gas cap is loose.
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.