In order to create power, your engine burns a mixture of fuel and oxygen in its combustion cylinders. The spark for this burning process is provided by your spark plugs, and the electricity to generate the spark is carried to the plugs from your distributor by your GMC truck spark plug wires. How much electricity is required to ignite your fuel? Your truck spark plug wires carry tens of thousands of volts at once, several times a minute.

This means they must be in good shape, or your engine is going to have problems. Rough idling, hard starting, stalling, detonations, misfires, and a drop in fuel efficiency can be some of the symptoms of bad GMC truck spark plug wires.

If there are any cracks or imperfections in your spark plug wires, all that electricity is going to have an escape route, and your spark plugs will not fire at full capacity. It is a good idea to periodically inspect your truck spark plug wires for signs of damage, but you may not be able to tell just by looking at them, as cracks in the underside of the wire coating or damage to the wires themselves can cause the same problems. You should replace your GMC truck spark plug wires with every engine tune-up, as well as whenever you replace your spark plugs. When you install new spark plug wires, you will need to pick up a set of genuine truck spark plug wires, as the wires are all different lengths in order to reach the various spark plug locations in your engine.Spark plug wires are not expensive and not difficult to replace, and you can enjoy our great low prices and high quality selection when you shop our extensive online catalogue.