Hello and welcome to justanswer.
The knock sensor is relatively easy to replace.
Do you have the 2.0 or the 2.2 or the 2.4 liter engine?
Thanks for the info.
The starter must be removed first to access the knock sensor. The knock sensor is on the side of the block, facing the radiator, above the starter. The knock sensor is held in place with one bolt. When installing the new knock sensor, make sure not to overtighten the mounting bolt. Tighten to 18 ft. lb.