BBBBadSS

iTrader: (16)

I'm doing a intake swap and was wondering if it's a good idea to change knock sensors while in there or are these things good for many miles. I have a 98 with about 75,XXX miles on.

Jabroni

From what I know, they do not degrade like an O2 sensor does. If I were you, I'd probably just replace them because I was already digging aroung under the intake and they are bound to go out sooner than later if your luck is like mine....but that's just me.

SS1875

iTrader: (34)

I would change them....it wont hurt and then you wont have to go through the whole process again if one decides to go bad on you...like mine did!!

WhiteRhino

iTrader: (6)

Since you have a 98 you should upgrade to the 99-02 style knock censors.The 98's are known to have crap censors.When you upgrade to the newer style you need to get the harness as well.I dont remember the cost but its not that exspenive.I had mine desensitised (sp?) thru tuning.But,if it wasnt for tuning I would upgrade as well.

BBBBadSS

iTrader: (16)

That's what i was thinking, since im already in there i sould propably just do it. Would anyone happen to know the gm part # for 99 and up knock sensors? If i need to replace the harness also where does the harness go to, from the sensors to where? Thanks guys!

WhiteRhino

iTrader: (6)

The harness goes from the censors to the main wiring.You'll see once you get the intake off.You can ask for the part numbers here https://ls1tech.com/forums/new-ls1-owners-newbie-tech/336996-request-part-numbers.html

Hope this helps!

BBBBadSS

iTrader: (16)

Thanks for the help guys!

WILWAXU

iTrader: (6)

Hehe, to think.... some have purposely "desensitized" their knock sensors.