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GMC TSB #PIT5529
2017 GMC Sierra
TSB Document:
Affected Component: ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL
- Summary
- This Preliminary Information communication provides information to the technician about vehicles that have Trailer connection not recognized or ?Check Trailer wiring? or ?Service Trailer Brake? message. Technician may find Diagnostic Trouble Codes C1112, C1113, C1114, C111B, U1556, and/or U1505. Technician will need to inspect the Trailer Brake Power Module connector for corroded terminals and replace as necessary.
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