LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2009 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 275 (Data Communication System) >> Diagnostic Information and Procedures >> DTC U1815 >> Circuit/System Verification
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2010 GMC Yukon XL, 2010 GMC Yukon, 2010 Chevrolet Tahoe, 2010 Chevrolet Suburban, and 2010 Chevrolet Avalanche. 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).
scientia non olet · About LEMON Manuals