Knock Sensor

[simmonsp5]

i got a knock sesor that is bad i have found that there are 2 of them 1 on each side of the mower any one know how hard this is to change.

 

veh 2001 gmc 5.3 liter

[alwcurlz]

i got a knock sesor that is bad i have found that there are 2 of them 1 on each side of the mower any one know how hard this is to change.

 

veh 2001 gmc 5.3 liter

 

Both knock sensors are underneath the intake plenum and installed into the valley pan.

Replacing the knock sensors involves removing the intake system, manifold/plenum and fuel rails. Once those are removed then you'll have access to the rubber grommets in the valley pan.

 

Check this link, for more info and pictures. Read through this. There is a lot of good info!

 

Good luck!