right on the valve cover under the air inlet hose and manifold. indiviual coil packs per cylinder. easy to change.
How do you change the spark plugs on a 2002 chavy trailblazer
ALL gasoline engines have spark plugs. Only diesels don't have spark plugs.
What huh?
AC Delco Iridiums
follow the plug wires they are on the heads
Depends on the size of your engine. IE if, you have a 6 cylinder (v-6) it requires 6 spark plugs etc.
Where are the spark plugs on a trailblazer
in the trunk
Screwed into the head.
A 2004 Chevrolet Trailblazer that has a 4.2 liter engine will have a spark plug gap of .044 inches. The best spark plugs for this vehicle are iridium spark plugs.
take off the plastic cover and under where the silver cover on the engine says ecotech is where the spark plugs are located
I would recommend the OEM spark plugs, AC/Delco. Excellent plugs.