EXTERIOR LIGHTS – GMC Sierra 1500 HD 2003 – SYSTEM WIRING DIAGRAMS

EXTERIOR LIGHTS

Back-up Lamps Wiring Diagram for GMC Sierra 1500 HD 2003

List of elements for Back-up Lamps Wiring Diagram for GMC Sierra 1500 HD 2003:

• (30 series chassis cab)
• (30 series except chassis cab)
• (below left side of dash) i/p relay block
• (left side of transmission) back-up lamp switch
• 10/20 series
• 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 (on left rear body mount)
• G401 (on spare tire hoist bracket)
• G403 (on left rear frame body mount bracket)
• 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, near battery)

Exterior Lamps Wiring Diagram (1 of 3) for GMC Sierra 1500 HD 2003

List of elements for Exterior Lamps Wiring Diagram (1 of 3) for GMC Sierra 1500 HD 2003:

• (30 series except chassis cab)
• (30 series chassis cab)
• 10/20 series
• Anl/
• 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
• Drl
• F11
• Frt park fuse 10a
• G100 (lower left side of radiator core support)
• G203 (behind left side of dash, near left "a" pillar)
• G302 (on left rear body mount)
• G401 (on spare tire hoist bracket)
• G403 (on left rear frame body mount bracket)
• 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
• 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
• S217
• 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)

Exterior Lamps Wiring Diagram (2 of 3) for GMC Sierra 1500 HD 2003

List of elements for Exterior Lamps Wiring Diagram (2 of 3) for GMC Sierra 1500 HD 2003:

• (30 series except chassis cab)
• (30 series chassis cab)
• (except w/ 4-wheel steering)
• (w/ roof marker lamps)
• (w/ 4-wheel steering)
• (w/ pto)
• 10/20 series
• A12
• C1 b
• C1 d
• C1 g
• C1 h
• C2 d
• C3 b6
• C3 d
• C3 h
• C4 f
• D12
• E11
• F12
• From a frt park fuse (diagram 1 0f 3)
• G302 (on left rear body mount)
• G304 (except crewcab) (under left front seat)
• G305 (crewcab) (on left "b" pillar)
• G401 (on spare tire hoist bracket)
• G403 (on left rear frame body mount bracket)
• Hot at all times
• I/p relay block
• Int park fuse 10a
• Interior lights system
• Left front clear- ance lamp
• Left license lamp
• Left rear clear- ance lamp
• Left rear turn signal
• Left tail/ stop- lamp
• 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 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)
• S219 (in brake clutch harn)
• S336 (w/ thermo console)
• S903
• S904
• S905
• S907
• S914
• Seo b1 fuse 15a
• Seo b2 fuse 30a
• Stop lp fuse 25a
• Stop- lamp switch
• Tailgate marker lamp
• Trl park fuse 15a
• Under- hood fuse block (on left side of engine compt)

Exterior Lamps Wiring Diagram (3 of 3) for GMC Sierra 1500 HD 2003

List of elements for Exterior Lamps Wiring Diagram (3 of 3) for GMC Sierra 1500 HD 2003:

• (behind right side of dash, near right "a" pillar)
• (behind right side of dash, near right "a" pillar) g200
• (w/ level 3 convenience package)
• A11
• Battery
• C10
• C3 e1
• C6 right i/p fuse block
• Center high mounted stop lamp (chmsl)
• Clearance lamps
• Computer data lines system
• D10
• Driver door module (ddm) (behind drivers door trim panel, below switch assembly)
• Driver outside rearview mirror
• E10
• Ext- erior illum lamp
• F10
• Flash fuse 25a
• Front passenger door module (fpdm) (behind front pass- engers door trim panel, below switch assembly)
• G200
• G200 (behind right side of dash, near right "a" pillar)
• G203 (behind left side of dash, near left "a" pillar)
• Ground
• Hazard sw
• Hot at all times
• I/p relay block
• I/p relay block (below left side of dash)
• Instrument panel cluster (ipc)
• Left i/p fuse block (on lower left side of dash)
• Left roof l marker lamp
• Left turn ind
• Logic
• Lr lamp volt
• Lt door lmp gnd
• Lt door lmp pwr
• Lt trlr st/trn fuse 10a
• Lt turn fuse 10a
• Lt turn sig
• Lt turn sig volt
• Nca
• Passenger outside rearview mirror
• Red
• Right i/p fuse block
• Right roof r marker lamp
• Right turn ind
• Rr lamp volt
• Rt door lmp gnd
• Rt door lmp pwr
• Rt trlr st/trn fuse 10a
• Rt turn fuse 10a
• Rt turn sig
• Rt turn sig volt
• S200 (in roof marker harness)
• S201 (in roof marker harness)
• S202
• S205
• S207
• Serial data
• Stoplamp sw
• Tan
• Turn ind
• Turn signal/flasher module
• Under- hood fuse block
• Veh chmsl fuse 10a
• Veh stop fuse 15a