They are located under the resonator box that says Vortec 4200. Due to the dual overhead cam configuration the plugs are on the top of the motor under individual coil packs. You must remove the coil...
Your owner's manual lists the schedule for replacing the plugs. Unless you notice a reduction in mileage or performance they are more than likely good for 100,000 miles.
take the wires off make sure you put a peice of different color tape on each wire so you know what wire goes back on the spark plug.then you take one plug at a time off with a ratchet set,and put the...
In many automobile engine configurations, a spark plug socket is the only way you will ever get at the plug. But even in situations whee the hex on the plug is easily accessible (lawnmower, for...