What does this do for the car????

 

LT4 version is different than the LT1 in that its a bit less sensitive due to the LT4 cars having a noisier valvetrain. This was so they would not get any false knock associated with noisier rockers and such.

-Brian

 

Oww Ok,Thanx I didnt now that! May come in handy.

 

To make it work right you need to do bolth the LT4 Knock mod & sensor

 

Thats not what shoebox has said... according to him you just need the knock module.

 

That cool, I was told to do them bolth by my buddy that works for GM. I am just going by what he told me to do

 

I'd check the part number I bet the LT4 sensor is the same as the ODBII Sensor... Your buddy who works for gm does he work at a dealer or is he an engineer or something? (trying to establish credentials because if hes more than just a salesman or mechanic and the part numbers ARE different then we may have to take a new line of thinking towards the LT4 KM)

 

No my buddy is not a sale men he has been working on cars for over 30 years.
I call the parts dep the part# for the LT1 is 16214671 and the LT4 is 16214681. they did not have one for the sensor BUT when I did the one on my car the # on the sensor that came off my car was different from the "LT4 " sensor I got.

 

I just did this to my car. You get the LT4 knock module, and the LT1 knock sensor (pn 10456...). The LT4 sensor will not work.

 

i replaced both when i back-dated the computer to OBD1. i replaced the module first. then i noticed i was getting pretty bad knock so i replaced it and all is well.