Q: i attain a coil kit for my car and plugs what the purpose of a coil kit

asked by on October 29, 2016

I brought a coil kit for my car a 2003 gmc envoy im goin to have it tune up what the purpose of a coil kit and how you know if you need a coil kit and what are the symptom if they need to be replace

My car has 16350 miles.
My car's transmission is unknown to me.

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