* Spark Plug Gap: This is the distance between the spark plug electrodes. The correct gap is crucial for proper ignition. You'll need to consult your owner's manual for the precise specification. It's typically between 0.040" and 0.050", but always check your manual.
* Other Gaps (less likely): There might be other gaps related to specific components within the engine, but without more context, it's impossible to say.
To find the correct spark plug gap: Look in your owner's manual. If you don't have the manual, you can often find a digital copy online through a site like the Oldsmobile Owners Club or a reputable automotive parts website. You can also search online using "2002 Oldsmobile Alero 3.4L spark plug gap". This should yield the correct information.