2010 terrain code

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  • Tech32
    Junior Member
    • Aug 2013
    • 11

    2010 terrain code

    I am new to doing dianostics no formal training am a tech and have been for 20 years have a 2010 GMC terrain with codes POO17 and POO16 crank sensor and cam sensor corralation did some basic checks not sure what to do now any suggestions would help
  • Steve6911
    Moderator
    • Feb 2007
    • 2168

    #2
    Barry

    When posting a question please give Year, Make, Model and engine displacement of the vehicle. The first 10 digits of the Vin will also be helpful. Your profile shows you have a Modis, did you check the troubleshooter for any tips? Also the Component Testing Module will show you how to test the cam and crank sensor if thats where there Troubleshooter directs you.

    Steve

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    • Bob's Garage
      Senior Member
      • Nov 2007
      • 3257

      #3
      Originally posted by Tech32
      I am new to doing dianostics no formal training am a tech and have been for 20 years have a 2010 GMC terrain with codes POO17 and POO16 crank sensor and cam sensor corralation did some basic checks not sure what to do now any suggestions would help
      Since you are new to diagnostics, these codes can be a challenge, but usually end up as a loose timing chain. You should have some cam timing deviation type PIDs on something as new as a 2010.



      Like Steve has said, the Troubleshooter is full of great tips on these and many other codes and symptoms. Troubleshooter is one of the most underutilized benefits of using Snap-on scanners. You can have a clue and some well researched info that may help you get an understanding as to what these codes really mean.

      20121008-1937-1.jpg

      Since you have a Modis, you can try using the scope and pin out the CKP & CMP signals. In this way, you can see exactly what the PCM sees, and compare your CKP & CMP correlation.

      You can save some scope movies and mail them to your peers, or compare your signals to "known good" on iATN in the waveform library for example.

      20121010-1917-1.jpg


      Good Luck, Bob

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