how much life can be expected on stock spark plugs in a 02 5.3 tahoe

how much life can be expected on stock spark plugs in a 02 5.3 tahoe


If they are original plugs, I think they are AC. They are good plugs. Technically you should replace them every xxxxx miles? What is it guys?, 30K?

What do they look like? I recently replaced mine in the Burb for the second time at around 100K.

Lesson learned....don't use Bosh.

Lesson learned....check the gap on "pregapped" plugs.

If they are original plugs, I think they are AC. They are good plugs. Technically you should replace them every xxxxx miles? What is it guys?, 30K?

What do they look like? I recently replaced mine in the Burb for the second time at around 100K.

Lesson learned....don't use Bosh.

Lesson learned....check the gap on "pregapped" plugs.


I'm pretty sure there the AC's. I have 75k on the truck and they are original.......I'm I way over due!! If 30K is the number then they need to be changed for sure. Also I don't want to spend the $ 17.?? something each at the dealera trip to napa or autozone!. do you know the AC part number.....Thanks Aaron

I'm pretty sure there the AC's. I have 75k on the truck and they are original.......I'm I way over due!! If 30K is the number then they need to be changed for sure. Also I don't want to spend the $ 17.?? something each at the dealera trip to napa or autozone!. do you know the AC part number.....Thanks Aaron


Check your owners manual!
Plug replacement isn't due till 100K