knock sensor

[rcsilverado99]

i dont know where they are located so can some one give me some help pleasei checked in back but i couldnt find it if some has pics or somethings

[farmtruc]

Remove the intake manifold and they are screwed into the valley pan.

[rcsilverado99]

do i replace one or both? is there a difference in both or the same but just 2?

[rcsilverado99]

are they both inside

[farmtruc]

might as well do both, ya, same spot

[GasGuzzler]

Lots of KS questions lately.