Chevrolet Express 2003–2007 — technical service bulletin
Bulletin 3514 · NHTSA communication 10018924 · issued Jan 25, 2006
Technical service bulletin
communication type
Electrical System
component
2003–2007
model years
10
vehicle entries
Official summary
Harness location for trailer brake installation rpo z82 and/or uy7. *tt
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.