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GMC TSB #PIT5521A
2018 GMC Sierra 3500
TSB Document:
Affected Component: ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL
- Summary
- This preliminary information communicates a Diagnostic Tip for a Service Trailer Brake Message with DTC C111B C1112 C1113 C1114 advising to address any battery issues first before any in depth diagnostics are done.
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