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under the resonator air inlet box. on the valve cover youll see the coil packs. remove the single bolts. pull up the coil pack until the boot clears the valve cover. change plug. reinstall the coil pack and move on to the next. easy. can be done in 30 minutes.

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15y ago
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Q: Where are the spark plugs in a 2004 Chevy Trailblazer?
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