b9ba8401_y__Buick__GMC___Cadillac_Parts__ng_Visible_cracks_in_coil_body
Ignition Modules Limited Lifetime Parts Warranty Protection Later-model vehicles with a distributor and coil pack use an ignition module as a switch that, when engaged, supplies power to the coil which in turn creates the spark that ignites the air-fuel mixture.
Signs of wear: Engine won’t start Engine misfiring
Auto Parts Wear & Replacement: Chevy, Buick, GMC & Cadillac Parts
Signs of wear: Engine won’t start Engine misfiring Visible cracks in coil body