EXTERIOR LIGHTS

(2500 w/ hvy, 3500 w/o crew cab) (2500 w/o hvy) (3500 w/ crew cab)
(2500 w/ hvy, 3500 w/o crew cab: left side of fuel tank) (2500 w/o hvy: on spare tire hoist bracket) (3500 w/ crew cab: on left rear body mount)
A11
Allison transmission
B/u lmp vlt
B12
Back-up alarm
Battery
Body control module (bcm) (on lower left side of dash, below steering column)
C175
Computer data lines system
Diesel
Engine control module (at left front of engine compt)
F10
G302 g401 g403
G403 (on left rear body mount)
Hot at all times
I/p fuse block (on lower left side of dash)
I/p relay block (near left kick panel)
Left back-up lamp
Press sw
Pressure switch manifold
Rear lamps junction block
Rev sig
Right back-up lamp
Serial data
Tbc 2b fuse 15a
Trailer connector
Transmission control module (at left front of engine compt)
Trlr b/u fuse 10a
Underhood fuse block (left side of eng compt)

(2500 w/ hvy, 3500 w/o crew cab) (1500, 2500 w/o hvy) (3500 w/ crew cab)
(2500 w/ hvy, 3500 w/o crew cab: left side of fuel tank) (1500, 2500 w/o hvy: on spare tire hoist bracket) (3500 w/ crew cab: on left rear body mount)
(left side of transmission) back-up lamp switch
(near left kick panel) i/p relay block
A/t
A11
B/u lmp vlt
B/u lmps sig
B/u lp fuse 20a
Back-up alarm
Body control module (bcm) (on lower left side of dash, below steering column)
F10
G302 g401 g403
G403 (on left rear body mount)
Hot in run or start
Left back-up lamp
M/t
Park/neutral position (pnp) switch (left side of transmission)
Pnk
Rear lamps junction block
Right back-up lamp
Trailer connector
Trlr b/u fuse 10a
Underhood fuse block (left side of eng compt)

(2500 hd, 3500 w/o crew cab) (1500, 2500) (3500 w/ crew cab)
(2500 hd, 3500 w/o crew cab: left side of fuel tank) (1500, 2500: on spare tire hoist bracket) (3500 w/ crew cab: on left rear body mount)
Auto
Back-up lamps circuit
Body control module (bcm) (on lower left side of dash, below steering column)
C2 b2
Computer data lines system
D10
Emergency vehicle roof lamp relay
F11
Frt park fuse 10a
G100 (lower left radiator support)
G200 (behind right side of dash, near right "a" pillar)
G203 (behind left side of dash, near left "a" pillar)
G302 g401 g403
G403 (on left rear body mount)
Hazard switch
Head
Headlamp switch
Hot at all times
Hot in run and start
I/p relay block
Ign e fuse 10a
Left
Left front marker lamp
Left front park/ turn signal lamp
Off
Park
Park lamp relay
Pnk
Prk lmp on
Prk lmp rly
Red
Right
Right front marker lamp
Right front park/ turn signal lamp
S100
S101
S215
S217
S412 (left rear lamp harn)
S413 (right rear lamp harn)
S414
S415
S416
S417 (in camper 5th wheel harn, near trailer connector breakout)
S418
Serial data
Stud 1 fuse 40a
Stud 2 fuse 30a
To trl park fuse (diagram 2 0f 3)
Trailer connector
Turn signal/ multi- function switch
Under- hood fuse block (on left side of engine compt)

(2500 hd, 3500 w/o crew cab) (1500, 2500) (3500 w/ crew cab)
(2500 hd, 3500 w/o crew cab: left side of fuel tank) (1500, 2500: on spare tire hoist bracket) (3500 w/ crew cab: on left rear body mount)
(not used)
(w/ roof marker lamps)
(w/ dual rear axle
(w/ pto)
(w/o dual rear axle
A c3
A left rear marker lamp b
A12
Beacon lighting
C1 b
C1 d
C1 g
C1 h
C2 d
C210
C3 b6
C3 d
C3 h
C4 f
D12
E11
F12
From a frt park fuse (diagram 1 0f 3)
Fusible link
G200 (behind right side of dash, near right "a" pillar)
G302 g401 g403
G304 (except crewcab) (under right front seat)
G305 (crewcab) (on left "b" pillar)
Hot at all times
I/p relay block
Int park fuse 10a
Interior lights system
Lamp harn)
Left front clear- ance lamp
Left license lamp
Left rear clear- ance lamp
Left rear turn signal
Left tail/ stop- lamp
Lighting
Lr park fuse 10a
Rear lamps junction block
Red
Right front clear- ance lamp
Right i/p fuse block
Right license lamp
Right rear clear- ance lamp
Right rear marker lamp
Right rear turn signal
Right tail/ stop- lamp
Roof beacon relay (at lower left "b" pillar
Roof beacon switch
Rr park fuse 10a
S206 (in i/p harn)
S215
S219 (in brake clutch harn)
S420 (in license lamp harn)
S423
S424
Seo b1 fuse 15a
Seo b2 fuse 30a
Stop lp fuse 25a
Stop- lamp switch
Tailgate marker lamp
Trl park fuse 10a
Under- hood fuse block (on left side of engine compt)
Vehicle roof lamp lighting
W/ emergency
W/ roof
W/ wrecker
W/dual rear axle
W/o dual rear axle
Wrecker relay

EXTERIOR LIGHTS – Chevrolet Cab & Chassis Silverado 3500 2006 – SYSTEM WIRING DIAGRAMS