Where is the knock sensor located on a 2012 gmc acadia 3.6l engine

SOURCE: 2002 jeep liberty 3.7 engine where is knock sensor

get the pcm computer checked first for errors.
The 2 knock sensors are bolted into the cylinder block under the intake manifold. The sensors are used only with the 3.7L engine.
http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c15280221909

what are your sysptoms of no start?

SOURCE: Location of knock sensor on 1994 toyota 22vre engine

The Knock sensor on a 22re is located under the intake manifold on the engine block. to the upper left of the oil filter. With is the passenger side of the engine. I believe it is yellow in color. Not do be confused with the oil pressure sensor which is close by. The knock sensor has a larger electrical connector. Good luck it can be hard to get to.

SOURCE: trying to locate where the knock sensor is located on the engine.

on my 1990 gmc its right be hind the starter its round and has a one wire plug becarful some have left hand treades and coolant willbe comn out i would do it while it was cold

SOURCE: 2003 GMC Sierra Knock sensor and oil pressure??

the knock sensors are located below the intake plenum,or,upper intake manifold as some call it, they screw into the lower intake, the front one is sensor 1, the rear is sensor 2. it is wise to change both if you have some miles.since you are going to be buying a gasket set to do this job.the sensors are cheaper than the gaskets.

SOURCE: where do i find a knock sensor a 1993 gmc sierra

Should be on the right side of the engine by the starter.Has a 1 wire connector.It does not go into the cooling system so you can just take it out without draining the coolant.Hope this helps.Good luck.