Are you serious? You gott Abe kidding me, right? They're screwed into the engine block - four on each side.
at the back of engine you'll see a round cap with 8 wires coming off it with another one coming out of the middle, just fallow each wire and it will go right to your spark plugs, each wire goes to each plug, 4 on each side of your engine. if you can't find them just call me and I'll walk you through it, 636-575-0255, thanks harry
It is in the driverside head between the front 2 spark plugs.
take it to the dealer
Most came with a V-8 engine, which took 8 spark plugs.
The V-8 engine has 8 plugs and the V-6 has 6 plugs.
A 2003 Chevy Suburban will crank but not start if it has no spark or fuel. Checking for a clogged fuel filter or fouled spark plugs can help to resolve the problem.
A person must leave the right size gap for the spark plugs when changing them. The 1999 Chevy Suburban has a spark plug gap of .060 inches.
in the trunk
Screwed into the head.
take off the plastic cover and under where the silver cover on the engine says ecotech is where the spark plugs are located
Follow the spark plug wires, they will lead you right to them.
The Spark Plugs are located under the resonator box in the center of the engine (its the rectangular black box on top of the engine)
passenger side third spark plug back Driver side ?