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GM 2.4 Ecotec Camshaft Position Sensor – How To Test & Replace

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In this video we go through the process of diagnosing the problem with my car via an OBDII scanner, testing the probable Camshaft Position Sensor failure and replacing the part. My vehicle is a 2012 GMC Terrain but the process should be essentially the same on any 2.4 Ecotec engine.


Exhaust Camshaft Position Sensor – #12655421, genuine GM replacement


Intake Camshaft Position Sensor – #12655420, genuine GM replacement


OBDII Scanner


Multimeter










Tools Needed:
Ratchet w/ Extension
8mm socket
10mm socket
Pliers / channel locks
Slotted / flat screwdriver
ODBII scanner (if you want to check your engine codes)
Multimeter (if you want to test the camshaft position sensor)

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