Have not change my plugs in over 80K miles. Running fine. Just wondering
Cadillac Q&AAsk Your Question
2005 Cadillac DeVille Question: how often do I need to tuneup or replace spark plugs?
Answer #1Greg's Orange Auto (11870 Answers) , Orange, CA - (714) 361-9386globalhelper November 08, 2012, 15:38Master
they claim 100k miles but i think its about time for yours as preventitive maint
Replyjosefarr, November 09, 2012, 05:38Rookie
Answer #2your.mechanic November 08, 2012, 17:25Master
on your car...100000 mi
Replyjosefarr, November 09, 2012, 05:39Rookie
How much is the usual charge, if go to Cadillac dealer?
Want some idea of the charges.