Purge/Seal test not working after 17.2 update.

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  • phill57
    Senior Member
    • Oct 2007
    • 474

    Purge/Seal test not working after 17.2 update.

    I have reported this to Tech Support but thought I would put it here too in case someone else noticed this.

    Performing a Purge Seal test on a 2007 Pontiac G5 2.2 VIN 1G2AJ55F777232256 and noted that the purge function works as requested but when you request the seal function the purge solenoid is supposed to be commanded closed but it only closes for a split second and then goes back to the previously requested purge %. It will then abort the test as the vacuum gets too high in the tank. As a work around you can command the purge solenoid back to 0% and confirm the system holds a vacuum that way.

    Tried 3 other GM vehicles:
    2008 Chevrolet Equinox 3.4 VIN 2CNDL23F086327064
    2008 Chevrolet Equinox 3.4 VIN 2CNDL23F286343265
    2013 Chevrolet Cruze 1.4 VIN 1G1PC5SB7D7316812

    This test worked last week on the 2007 Pontiac when I was using the 16.4 software.
  • Wheel
    Senior Member
    • Jul 2007
    • 719

    #2
    Originally posted by phill57
    I have reported this to Tech Support but thought I would put it here too in case someone else noticed this.

    Performing a Purge Seal test on a 2007 Pontiac G5 2.2 VIN 1G2AJ55F777232256 and noted that the purge function works as requested but when you request the seal function the purge solenoid is supposed to be commanded closed but it only closes for a split second and then goes back to the previously requested purge %. It will then abort the test as the vacuum gets too high in the tank. As a work around you can command the purge solenoid back to 0% and confirm the system holds a vacuum that way.

    Tried 3 other GM vehicles:
    2008 Chevrolet Equinox 3.4 VIN 2CNDL23F086327064
    2008 Chevrolet Equinox 3.4 VIN 2CNDL23F286343265
    2013 Chevrolet Cruze 1.4 VIN 1G1PC5SB7D7316812

    This test worked last week on the 2007 Pontiac when I was using the 16.4 software.
    Here again is an example of why it would be nice if the new update didn't overwrite previous software, but gave you a chance to switch back to it painlessly as needed just like could once be done by switching the cartridges on the brick back and forth. Should be doable at least on the Verus platform - also adding an additional incentive to choose it over a lesser platform.
    You can expect the reputation of your business to be no better than the cheapest item or service you are willing to sell. - Wheel

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    • phill57
      Senior Member
      • Oct 2007
      • 474

      #3
      GM purge / seal test

      I just got a new Edge with 17.4 and it appears the purge and seal test now works again as it should.

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