Check Engine Light Due to Loose or Worn Gas Cap on Chevrolet Express 3500

Problem Description and Possible Solution

A loose or worn gas cap could be cause the Check Engine Light to illuminate.

Problem Data
RepairPal Verified
Average mileage: 38,920 (38,920–38,920)
Exhaust & Emissions affected: Gasoline
7 model years affected: 1996, 1997, 1998, 1999, more2000, 2009, 2010
8 people reported this problem