Check Engine Light Due to Gas Cap Issue on Cadillac Escalade EXT

Problem Description and Possible Solution

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

Problem Data
RepairPal Verified
Average mileage: 93,333 (30,000–150,000)
9 model years affected: 2002, 2003, 2004, 2005, more2006, 2007, 2008, 2009, 2010
13 people reported this problem
Viewing 1 - 3 of 3 problem details
I changed the gas cap, and then they took out and swapped the whole fuel system. The light is still coming on due to this matter.
Gas cap was exchange to get light to go off. Warning continued for several weeks and then inadvertently went out.
Worn cap set off my engine check light also. Suspect the rubber seal.