• AMBW
  • Motor Age
  • Motor Age Training
  • Professional Distributor
  • PTEN
    1. TSBs

    Might Not Be the ECM

    Nov. 14, 2016
    You may experience a 2007-2012 Cadillac Escalade, ESV or EXT that has a P0633 DTC set in the ECM. Also, the Tech 2 will not be able to clear the DTC.
    65b853cac429d6001e08ec9d Mightnotbetheecm

    You may experience a 2007-2012 Cadillac Escalade, ESV or EXT that has a P0633 DTC set in the ECM. Also, the Tech 2 will not be able to clear the DTC.

    This code will set as an indicator that the ECM is in learn mode and not as a fault indicator. Any malfunction that causes a no-crank condition will prevent DTC P0633 from clearing. This DTC will clear upon a successful engine crank and start.

    Prior to diagnosing the DTC or replacing the ECM, ensure that all power moding, VTD and engine cranking systems are operating correctly.

    Continue Reading

    Sponsored Recommendations

    Tesla service, repair, and diagnostics

    Keep update-to-date on how to maintain your customer's Tesla vehicles.

    Tool Review: Ascot Supply 3/4" Drive 600 ft-lbs Split Beam Torque Wrench, No. 168-00600

    Reviewed by Eric Moore, manager at DeMary Truck in Columbus, Ohio.

    Diagnosing an engine misfire

    Recognizing a misfire is the easy part; the challenge is determining its cause.

    The ‘Iron Giant’

    This technician spent two and half years putting together his ‘giant’ of a toolbox setup.

    Voice Your Opinion!

    To join the conversation, and become an exclusive member of Vehicle Service Pros, create an account today!