LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1849 (Data Communications System) >> Diagnostic Information and Procedures >> DTC C0550 >> 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 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that DTC B1325, B1330, B1370, B1380, B1424, B1428, B1440, B1441, B1517, C0800, C0899, C12E1, P0560, or P0562 is not set.
  2. Ignition OFF, remove the scan tool, open and close the drivers door.
  3. Wait 60 seconds, ignition ON, verify that DTC C0550 is not set.
    • If the DTC is set with symptom byte 39, program the control module that set the DTC. If the DTC resets, replace the control module that set the DTC.
    • If the DTC is set with other symptom bytes, replace the control module that set the DTC.
scientia non olet · About LEMON Manuals