Sceptre

I'm wanting to upgrade my plugs, was thinking NGK, but havent found any for an 09 SS/TC, i dont know much about them any suggestions as far as this goes

SSlobalt

You don't need to upgrade your plugs. Messing around with the plugs on these engines just causes misfire codes.

Bandit1

He's right,you don't NEED to.I have and so have a few others.I don't know if they cause misifre codes?since i don't think a misfire may or may not throw a cel and have no way of checking that.

I changed mine simply because i wanted to take them out and look at them anyways and check the gaps,etc.I also don't know if these cars(engines) have issue with plugs getting frozen in sockets after x miles,so a little antisieze could'nt hurt.

Autolite has a set for our cars.You can cross check that(part#)at any autozone now as well.

http://www.autolitesparkplugs.com/mo...2862&pid=18360

note-changed mine after a tune,not before-

Rissa

Anyone care to tell me what part # the stock plugs are? I tried searching and THIS thread popped up lol

Bandit1

ac delco pn# 12620540 was the exact p/n from my factory installed plugs.That p/n looks superceded by ac delco p/n 41-108.

If you do a search here under 08 model ignition category,it seems to check out.

http://parts-catalog.acdelco.com/b2c/catalog_search.php

Rissa

Thanks you're great!!