Spark Plug Change in a Truck--How Hard Can it Be? Update#2

BFL13: You seem like you have more than the limited skills to change LS engine plugs.

You should just change the spark plugs and take carb. cleaner and clean the throttle body butterfly and throat while your under the hood.

Drive your vehicle and see how it runs. If the wires and/or a coil are not good, you'll get a trouble code that tells you which cylinder needs attention.