Cadillac DeVille DTS Problem Report
Cadillac DeVille DTS Check Engine Light on Due to Faulty Catalytic Conveter
Check engine light giving 3-4 error codes all related to catalytic converter. Put an after-market catalytic converter on one year ago so car would pass inspection. Now have the same problem. Car won't inspect with current error codes. Heard Magaflow catalytic converter fixes the problem and will last more than one year. - Visitor
check enigine light stays on steady. Computer code showed inefficient catalytic converter. Expensive replacement. - Visitor
Check engine light due to faulty catalytic converter - Visitor
Check engine light on, tech referred me to Cadillac as he claimed catalytic converter needed replacement. Dealer verified and replaced under warranty (8 years/80k miles). - options28
A Loose or worn gas cap may cause Check Engine Light to illuminate.
My check engine light is still on. Also the check coolant light is on. They were on before my e...
The torque converter clutch (TTC) may stop working due to an internal transmission failure. The...
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