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How to Replace the Spark Plugs on the Cadillac CTS?

Model: Cadillac Cts MK 1 - Years 2002-2007
Part: Spark plugs

To replace the spark plugs on the Cadillac CTS, open the hood to access the top of the engine block. Loosen the plastic cover secured with the appropriate screws to access the underlying components: disconnect the coils from their connectors and remove them from their housing after unscrewing the bolts. After removal, pull out the underlying spark plugs to replace them with new parts. Finally, reinstall all previously removed parts.

Updated on 18 May 2026 by ScegliAuto

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