To get at the rear plugs you need a good assortment of 3/8 drive adapters swivel ect. I did mine last week. Once you find a good combination for the back same setup work for all 4 plugs and its not that bad of a job. I'm sure there a best way to take the rear valve off too but you should be able to figure it out.
Spark plug change, 2006 DTS performance.
I am gong to replace the spark plugs on my 2006 dts, I know there,s a unit to remove for the rear plugs, is there any thing else that I should be aware of, the car has 83,000 miles, Thanks Tony.
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