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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 1514 (Data Communication System) >> Diagnostic Information and Procedures >> DTC U1815 >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that DTC B137A is not current in the serial data gateway module (SDGM).
  2. Verify that DTC U1815 is not set current only in the HPCM.
    • If the DTC is current in the HPCM only, replace the drive motor power inverter module (PIM).
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