Should be on the right side (passenger side) of the engine, mounted above the oil filter.
The link below may give you more information, but login may be required to view.
www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?chapterTitle=Distributorless+Ignition+System&partName=Engine+Electrical&pageId=0996b43f8037164a&subChapterTitle=Ignition+Coil&partId=0996b43f80371627
The coil pack is located on the passenger side of the motor in a 1996 GMC Sonoma 4.3L Vortec Engine. The spark plugs plug into the coil pack eliminating the spark plug wires.
pull of the coil wire and unbolt the 2 10mil bold and its off
Here is the number three coil pack located?
Technically it will not cause the truck to run rough. Depending on what year the truck is. If its a 2000 or higher then it might have to be secure. But If your truck is running rough, it's either going to be spark plugs and wires, cap or rotor, coil pack, or fuel filter. I have just had this problem with my 1990 Chevy truck. The coil pack was loose, but that wasn't causing the problem. It was because the coil pack was bad. If you are having these problems check the minor things first. Mostly something electrical will be causing this problem.
On a 2003 Explorer, there is no distributor or coil pack. Each spark plug has it's own coil pack as part of the spark plug boot.
beneath each individual coil pack. You need to remove a coil pack to get to a spark plug.
coil----3---4 pack---2---6 plug----1---5
f150 ignition coil sequence
To replace a coil pack you will have to do a few steps. Start with disconnecting the battery cable, open hood, go to the coil pack, unplug the old one, plug in the new one, recharge the coil pack and then shut the hood.
Your truck has two coil packs. one on each side of the truck. I changed mine twice on my 99 expedition. I dont know the exact definition of the coil pack, but i know that they are related to the sparkplug and it's wires, and when they go bad they can cause a misfire with the sparkplugs. If you need to change them send me a message i can tell you how.
The coil pack is located on the right hand side of the truck. Remove the right tire and pull back on the plastic cover closest to the motor.
coil---3---4 pack--2---6 plug---1---5