Chevrolet Silverado 2014 — technical service bulletin
Bulletin P1-1105 · NHTSA communication 10054227 · issued Nov 1, 2013
Technical service bulletin
communication type
Electrical System
component
2014
model years
2
vehicle entries
Official summary
Gmc/chevrolet: information being provided regarding the addition of aftermarket (non-gm) trailer brake controller harness. Model 2014 silverado 1500, sierra 1500. *pe
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.