YES. There are three ignition coils, 2 wires on each coil to 2 spark plugs. The jumping part I don't think is going to be fixed by replacing ignition coils. Unless you are trying to crank the vehicle and are killing the battery. The ignition coils are located, facing the engine, on the left side or passengers side in the back along the top. They are black and obviously. You can trace a plug wire to the coil. ALSO.I know this sounds stupid. But OEM parts DO MATTER on some GMC vehicles. So that means ACDelco/Delphi parts. They cost more. But sometimes getting those parts does make a difference.
Have the battery and alternator checked. Replace all 3 coils packs
Wednesday, February 17th, 2010 AT 7:59 AM