Where are the spark plugs located in a 2002 olds bravada?

In a 2002 Oldsmobile Bravada, the spark plugs are located on the engine's cylinder heads. To access them, you'll need to remove the engine cover and possibly the ignition coils, which are mounted on top of the spark plugs. The engine is a 4.2L inline-six, so the spark plugs are positioned along the sides of the engine, typically requiring some maneuvering to reach.