Question about Cadillac DTS
Hello, The spark plugs are located on top of the engine under the ignition module assembly. On the driver side of the engine there is a electrical connector, disconnect it. there are 8 10MM bolts, remove them, Gently pull straight up, wiggle it while pulling up, the 4 front plugs are under neath. The boots may stay on the plugs pull them off and put them back on the module assembly. That was for the front plugs. The procedure for the rear is the same except you will need to remove the bracket and valve for the secondary AIR system to allow room to remove the ignition module assembly. Spark plug gap is .050 of an inch. Spark plug torque is 15 lbs, ft. Hope this helps
Posted on Sep 06, 2010
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Posted on Jan 02, 2017
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