GM 5.3 Vortec Questions

[Gutling]

your supposed to change o2 sensors after seafoam, all the nasty that comes out of your engine builds up on them. that would be first guess

[Blitanicle99]

Hmm I never new you were supposed to change the O2 sensors after you run seafoam. Thanks.

And damn I never knew it was a 325. I could have sworn I read it was a 327 but after sitting here and googling lots of junk, your right.