My 2005 Cadillac sts v6 check engine light keeps coming on what could be the problem my macaic says it is the catilicic converter

Asked by Feb 23, 2014 at 09:14 AM about the 2005 Cadillac STS 3.6

Question type: Maintenance & Repair

2 Answers

109,975

What codes is the check engine light giving you? You can have them checked for free at the local auto parts store. Use caution if it is a bad convertor you could cause more major issues by continuing to drive it. Are you having any drivability issues?

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16,275

my problem turned out to be a new gas filler cap - no more check light

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