LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2021 >> Traverse L >> Repair and Diagnosis >> External Pages >> Different car >> Section 47 (Cellular, Entertainment, And Navigation System) >> Diagnostic Information and Procedures >> DTC B174E >> Circuit/System Verification
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit/System Verification

WARNING: This page is about a different car, the 2020 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
  1. With the vehicle outside in an area with an unobstructed view of the southern sky, tune to XM.
  2. Verify DTC B174E is not set as current and the No XM Signal message is not displayed on the A11 Radio.
    • If DTC B174E is set as current or the No XM Signal message is displayed. 

      Refer to Circuit/System Testing.

    • If the customer complaint indicates certain XM channels are missing or certain XM channels have no audio 

      Refer to Missing XM Channels or No Audio On Certain XM Channels

    • Go to next step: If DTC B174E is not set as current and the No XM Signal message is not displayed and all expected channels are present and functioning correctly. 
  3. A fault is currently not present and may be an intermittent condition.
scientia non olet · About LEMON Manuals