Sierra 3500 Denali 4WD V8-6.0L (2011)
1 - Trailer Brake Control Relay (JL1)
2 - J422 (JL1)
3 - Trailer Connector
4 - J331 (Diesel without NQZ/LY6)
5 - X300 (LY6)
6 - X300 (Diesel)
7 - J411 (JL1)
8 - Junction Block - Rear Lamps
9 - G401
10 - J338 (JL1)
11 - G300
12 - J300 (LY6 without NQZ)
Passenger Door Harness Routing
