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Home >> GMC >> 2019 >> Terrain SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 630 (Keyless Entry System And Remote Functions) >> Diagnostic Information and Procedures >> DTC B1511 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

Verify the antenna is installed correctly and not damaged.

  1. Ignition ON.
  2. Verify DTC B1444, B1446, or B1451 is not set.
    • Go to next step: If none of the DTCs are set 
  3. Refer to Circuit/System Testing.
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