EXTERIOR LIGHTS – GMC Sierra 3500 HD 2008 – SYSTEM WIRING DIAGRAMS

EXTERIOR LIGHTS

Backup Lamps Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for Backup Lamps Wiring Diagram for GMC Sierra 3500 HD 2008:

• (6.6l)
• (6.6l) (on front of right cylinder head)
• (except 6.6l)
• (in camper harness, 109.5 cm from x414 breakout) j415
• (not used)
• Backup alarm
• Bck/up
• Bck/up lamp pcb relay
• Body control module (bcm) (lower left side of dash)
• G103 g107 (4.3l) (top left rear of engine)
• G300 (below driver's door, on body mount)
• G401 (on left rear body mount)
• Grd
• Hot at all times
• If equipped
• Inside rearview mirror (isrvm)
• J105
• J410
• Left backup lamp
• Left i/p junction block (lower left side of dash)
• Mjr
• Nca
• Rear lamps junction box (inside of left rear frame rail)
• Right backup lamp
• Trailer tow circuit
• Trlr bck/up fuse 10 fuse 9 10a
• Underhood fuse block (left side of engine compt)
• Veh bck/up fuse 15 fuse 14 10a
• W/ compass
• X10
• X11

Exterior Lamps Wiring Diagram (1 of 3) for GMC Sierra 3500 HD 2008

List of elements for Exterior Lamps Wiring Diagram (1 of 3) for GMC Sierra 3500 HD 2008:

• (4 speed a/t) x1
• (4.3l) x1
• (6 speed a/t) x1
• (6.6l) x1
• (except x1 4.3l & 6.6l)
• (in right end of dash) right i/p junction block
• (left side of dash) i/p fuse block
• 3a4
• Auto
• Body control module (bcm) (lower left side of dash)
• Chevrolet
• Chmsl rly
• Driver door lock/window switch
• Driver outside rearview mirror
• Engine control module (ecm) (left front of engine compt, near fan shroud)
• G101 (on lower right radiator support)
• G200 (on right front corner of hvac module)
• G201 (upper left corner of dash)
• Gmc
• Hazard switch
• Head
• Headlamp & panel dimmer switch
• Hz sw
• Hz sw l trn
• Hz sw r trn
• J101
• J103
• J201
• J230
• J603
• Left turn
• Lf trn sig
• Lower right front park/ turn signal lamp
• Lr stp/trn
• Maj
• Min
• Nca
• Off
• Park
• Park lp sig
• Passenger door lock/window switch
• Passenger outside rearview mirror
• Power take off (pto) module (if equipped) (outside of right front chassis frame)
• Prk lp rly
• Rf trn sig
• Right front marker lamp
• Right turn
• Rn/crk rly
• Rr stp/trn
• Tan
• Tcc brk
• Transmission control module (tcm) (4 speed a/t: left front of engine compt, near fan shroud)
• Turn signal/ multi-function switch (on left side of steering column)
• Underhood fuse block (left side of engine compt)
• Upper right front park/ turn signal lamp
• W/ folding mirrors
• W/ manual folding
• W/ power folding
• W/o folding mirrors

Exterior Lamps Wiring Diagram (2 of 3) for GMC Sierra 3500 HD 2008

List of elements for Exterior Lamps Wiring Diagram (2 of 3) for GMC Sierra 3500 HD 2008:

• (not used)
• (on lower left front of engine) (except 4.3l & 6.6l) g102
• 6.6l
• Anti-lock brakes system
• Center high mounted stop lamp (chmsl)
• Chevrolet
• Chmsl fuse 49 fuse 46 15a
• Chmsl pcb relay
• Computer data lines system
• Except 6.6l
• G100 (on lower left radiator support)
• G103 (6.6l) (on front of right cylinder head)
• G107 (4.3l) (top left rear of engine)
• G200 (on right front corner of hvac module)
• Gmc
• Hot at all times
• Instrument panel cluster (ipc)
• Ipc fuse 46 fuse 43 10a
• J100
• J102
• J105
• Left front marker lamp
• Left i/p junction block (lower x1 left side of dash)
• Left turn ind
• Logic
• Lower left front park/ turn signal lamp
• Lt prk fuse 26 fuse 23 15a
• Maj
• Min
• Misc ign fuse 43 fuse 40 10a
• Park lamp relay
• Pnk
• Right turn ind
• Rt prk fuse 27 fuse 24 15a
• Run/ crank relay
• Serial data
• Stop lamp switch (top of brake pedal assembly)
• Trailer tow circuit
• Trlr prk fuse 25 fuse 22 15a
• Underhood fuse block (left side of engine compt)
• Upper left front park/ turn signal lamp

Exterior Lamps Wiring Diagram (3 of 3) for GMC Sierra 3500 HD 2008

List of elements for Exterior Lamps Wiring Diagram (3 of 3) for GMC Sierra 3500 HD 2008:

• (in right end of dash) right i/p junction block
• (inside of left rear frame rail) rear lamps junction box
• 2b2
• Breakout) j418
• Breakout) j419
• Chevrolet
• G200 (on right front corner of hvac module)
• G300 (below driver's door, on body mount)
• G401 (on left rear body mount)
• Gmc
• Grd
• If equipped
• J337
• Left backup lamp
• Left front rear fender clearance lamp
• Left license lamp
• Left rear marker lamp
• Left rear most fender clearance lamp
• Left roof marker lamp
• Lower left tail/ stop & turn signal lamp
• Lower right tail/ stop & turn signal lamp
• Middle roof marker lamp
• Mjr
• Mnr
• Nca
• Rear lamps junction box (inside of left rear frame rail)
• Rear lamps junction box (inside of left rear frame rail) x1
• Right backup lamp
• Right front rear fender clea- rance lamp
• Right license lamp
• Right rear marker lamp
• Right rear most fender clea- rance lamp
• Right roof marker lamp
• Tailgate marker lamp
• Upper left tail/ stop & turn signal lamp
• Upper right tail/ stop & turn signal lamp
• W/ dual wheel

Trailer Tow Wiring Diagram for GMC Sierra 3500 HD 2008

List of elements for Trailer Tow Wiring Diagram for GMC Sierra 3500 HD 2008:

• (in camper harness, 109.5 cm from x414 breakout) j415
• (in chassis harness) j422
• 6.6l
• Anti-lock brakes system
• Backup lamps circuit
• Body control module (bcm) (lower left side of dash)
• Except 6.6l
• Exterior lights system
• G200 (on right front corner of hvac module)
• G401 (on left rear body mount)
• Hot at all times
• Hot w/ bck/up lamp relay energized
• Hot w/ park lamp relay energized
• J200
• J410
• J414 (in camper harness)
• J416 (129.5 cm from x414 breakout)
• J417
• J420 (in camper harness, 59.5 cm from x414 breakout)
• J421 (in camper harness, 205 cm from x414 breakout)
• Lt trailer
• Power distribution system
• Rt trailer
• Stud 1 fuse 68 fuse 63 40a
• Stud 2 fuse 63 fuse 58 30a
• Trailer brake controller solid state relay (20/30 series: left rear frame rail) (31 series: on left frame rail)
• Trailer connector (w/ truck trailer wiring harness) (at rear of vehicle)
• Trlr bck/up fuse 10 fuse 9 10a
• Trlr lt stop/turn pcb relay
• Trlr prk fuse 25 fuse 22 15a
• Trlr rt stop/turn pcb relay
• Trlr stop lt fuse 3 fuse 2 10a
• Trlr stop rt fuse 1 fuse 4 10a
• Turn sig lmp
• Underhood fuse block (left side of engine compt)
• W/ camper, 5th wheel trailer wiring provisions & 97 decibals electrical backup alarm
• W/ trailer brake control
• W/o trailer brake control