If you have the 4.3 V6 engine I find it best to jack up the front of the truck, support with jack stands and remove front wheels. With a long extension on your plug socket you can easily change all but #3 cylinder. With #3 I use a standard plug socket with a "wobble" extension to get around the steering shaft.
Need to know what size engine.
how do i change the spark plugs on a Chevy silverado 1500
5/8 spark plug socket and a 6 in extension
How do you change the spark plugs on a 2002 chavy trailblazer
Spark plugs and wires
Take out the old ones and put in the new ones
Spark Plugs on a LuminaSee the related questions to the right. HOW DO YOU CHANGE THE SPARKS PLUGS ON A 1993 CHEVY LUMINA APV 3.8L 231-V6 ENGINE (an van)
how do you change spark in a chev 2008 cobalt
Remove the spark plug wires from your 2000 Chevy Impala spark plugs. Remove the spark plugs with a 5/8 deep well socket by turning the socket to the left. Reverse the process to install the new spark plugs.
Check and clean your spark plugs that might be the problem.
ONE AT A TIME.
take it to the dealer