GROUND DISTRIBUTION – Chevrolet Silverado 2500 HD 2004 – SYSTEM WIRING DIAGRAMS

GROUND DISTRIBUTION

Ground Distribution Wiring Diagram (1 of 4) for Chevrolet Silverado 2500 HD 2004

List of elements for Ground Distribution Wiring Diagram (1 of 4) for Chevrolet Silverado 2500 HD 2004:

• (6.6l vin 1)
• (6.6l vin 2)
• (in forward lamp harness)
• (w/ allison) transmission control module
• 4.3l engine
• 5.3l flex fuel
• A/c compressor clutch
• A/c low pressure switch
• Auxiliary battery relay
• Battery (left)
• Battery (right)
• Brake fluid level switch
• Brake pressure differential switch
• Coolant level switch
• Daytime running lamp (drl) (left)
• Daytime running lamp (drl) (right)
• Diesel
• Engine control module
• Except 4.3l base
• Except 4.3l engine
• F/pmp relay
• Fog lamp (left)
• Fog lamp (right)
• Fuel composition sensor
• G100 (lower left radiator support)
• G102 (diesel) (right side of engine block)
• G102 (gas) (4.3l: lower right front of engine block) (except 4.3l: left side of engine block)
• G104 (left rear of engine block)
• G106 (right front of engine block)
• G107
• Gas
• Gas exc 4.3l
• Gas w/aux battery
• High beam headlamp (left)
• High beam headlamp (right)
• Horn (left)
• Horn (right)
• Ign 1 relay (gas)
• Ignition coil 1
• Ignition coil 2
• Ignition coil 3
• Ignition coil 4
• Ignition coil 5
• Ignition coil 6
• Ignition coil 7
• Ignition coil 8
• Ignition control module
• Low beam headlamp (left)
• Low beam headlamp (right)
• Mobile radio fuse block
• Park/ neutral position switch
• Park/turn signal lamp (left front)
• Park/turn signal lamp (right front)
• S102 (in engine harness)
• S104 (in engine harness)
• S107
• S156 (in engine harness)
• S157 (in engine harness)
• S223 (in seo harness)
• Throttle actuator control module
• Underhood fuse block (left side of engine compt)
• Upfitter option
• W/ dual horns
• W/aux battery
• W/pto
• Washer fluid level sensor
• Windshield washer fluid pump

Ground Distribution Wiring Diagram (2 of 4) for Chevrolet Silverado 2500 HD 2004

List of elements for Ground Distribution Wiring Diagram (2 of 4) for Chevrolet Silverado 2500 HD 2004:

• (exc flex fuel) c
• (flex fuel)
• (upfitter option) roof beacon relay
• (upfitter option) roof mounted beacon
• (w/ allison) transmission control module
• Active & elect shift transfer case
• Active & manual shift transfer case
• C1 a
• C2 a
• C2 d
• C3 a
• Crew cab
• Diesel
• Dual tanks
• Electronic brake control module
• Engine oil level switch
• Exc 8.1l w/o calif lev
• Except crew cab
• Front axle actuator
• Fuel heater sensor
• Fuel injector control module
• Fuel pump
• Fuel pump & sender assembly (secondary)
• G101
• G103 (diesel) (right rear of engine block)
• G103 (gas) (right rear of engine block)
• G108 (diesel) (lower left side of engine)
• G109 (diesel) (left side of engine block)
• G110 (left front body mount)
• G304 (except crew cab) (under right front seat)
• G305 (crew cab) (left "b" pillar)
• G306 (on right "b" pillar)
• G390 (near "c" pillar)
• Gas
• Glow plug relay
• Inflatable restraint passenger presense module
• Inflatable restraint sensing & diagnostic module
• Intake air temperature (iat)/mass airflow (maf) sensor
• Manual shift transfer case
• Memory seat module (driver)
• Mini wedge (door jamb switch) (left rear)
• Mini wedge (door jamb switch) (right rear)
• Nca
• Park/ neutral position switch
• Powertrain control module
• Rear wheel steering control module
• Rear window defogger grid
• S103 (in engine harness)
• S110 (in engine harness)
• S329 (in passenger seat harness)
• Seat adjuster switch (passenger)
• Seat bolster/ lumbar switch (passenger)
• Transfer case shift control motor
• Transfer case shift control switch
• Water in fuel sensor
• Window switch (right rear)
• Window switch) (left rear)

Ground Distribution Wiring Diagram (3 of 4) for Chevrolet Silverado 2500 HD 2004

List of elements for Ground Distribution Wiring Diagram (3 of 4) for Chevrolet Silverado 2500 HD 2004:

• (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)
• (base) window/ door lock switch (driver)
• (base) window/ door lock switch (passenger)
• (crew cab) backup alarm
• (except luxury)
• (if equipped) left front shock absorber solenoid
• (if equipped) right front shock absorber solenoid
• (left front)
• (left rear)
• (luxury) rear seat entertainment assembly
• (luxury) vehicle communication interface module
• (right front)
• (right rear)
• (tail gate)
• A12
• Audio amplifier
• B12
• Backup lamp (left)
• Backup lamp (right)
• Body control module
• C (gmc)
• C1 2c
• C1 a8
• C1 c5
• C1 d10
• C1 e
• C2 a
• C2 b6
• C3 b6
• Chevy
• Clearance lamps
• Column shift
• Cruise control module
• Data link connector
• Digital radio receiver
• E (chevy)
• Four wheel steering
• From i/p relay block a (diagram 3 of 4)
• G203 (near left "a" pillar)
• G302 g401 g403
• Gmc
• Hazard lamps switch
• Headlamp switch
• Hvac control module
• I/p relay block (near left kick panel)
• Ignition key alarm switch
• Inflatable restraint steering wheel module coil
• Instrument panel cluster
• Left i/p fuse block (lower left side of dash)
• License lamp (left)
• License lamp (right)
• Luxury
• Multi- function accessory switch
• Nca
• Radio
• Rear lamps junction block (inside of left rear frame rail)
• Rear seat audio controller
• Rear seat entertainment assembly
• Remote playback device (cd player)
• Right i/p fuse block (lower right side of dash)
• S213 (in i/p harness)
• S216 (in steering column harness)
• S217 (in steering column harn)
• S423
• S424
• Steering wheel dic controls
• Steering wheel speed/ position sensor
• Stop/turn signal lamp (right)
• Stop/turn signal lamp) (left)
• Tail/stop lamp (left)
• Tail/stop lamp (right)
• To i/p relay block (diagram 3 of 4)
• Tow/haul switch
• Traction control switch
• Trailer connector
• Transfer case shift control module
• Transmission shift select switch
• Turn signal hazard flasher module
• Turn signal/ multifunction switch
• Vehicle communication interface module
• Windshield wiper/washer switch

Ground Distribution Wiring Diagram (4 of 4) for Chevrolet Silverado 2500 HD 2004

List of elements for Ground Distribution Wiring Diagram (4 of 4) for Chevrolet Silverado 2500 HD 2004:

• (auto a/c) air temp sensor assembly (inside front)
• (auto a/c) air temp sensor assembly (inside rear)
• (base) driver unlock relay
• (except bose or luxury) auxiliary power outlet (front)
• (except bose or luxury) cigar lighter
• (if equipped) inflatable restraint disable switch
• (if equipped) power takeoff switch
• (if equipped) selectable ride switch
• (luxury) garage door opener
• (not used)
• (upfitter option) emergency vehicle roof lamp relay
• (upfitter option) roof beacon switch
• (upfitter option) wrecker relay
• (w conv package) driver door module
• (w conv package) passenger door module
• (w/o conv package) mini wedge door jamb switch (driver)
• (w/o conv package) mini wedge door jamb switch (passenger)
• (w/o conv package) window/ door lock switch (driver)
• (w/o conv package) window/ door lock switch (passenger)
• A/t shift lock solenoid
• A12
• Auto a/c
• Auxiliary power outlet (bin)
• Auxiliary power outlet (console)
• Auxiliary power outlet (front)
• Blower motor
• Blower motor resistor assembly
• Bose exc luxury
• C1 6c
• C1 a
• C1 b9
• C1 d9
• C1 f6
• C3 c
• C4 a
• C5 e
• C7 f
• C8 f
• C9 a
• Center high mounted stop lamp
• Cigar lighter
• Clearance lamps
• Data link connector
• Dome lamp (front)
• Dome/ reading lamp (rear)
• G200 (behind right side of dash, near right "a" pillar)
• Headlamp switch
• Hvac control module
• I/p relay block (below left side of dash, left of steering column)
• Inside rearview mirror
• Instrument panel cluster
• Left i/p fuse block (lower left side of dash)
• Lock relay
• Luxury
• Man a/c
• Rear wheel steering switch
• Recirculation actuator
• Right i/p fuse block (lower right side of dash)
• Roof marker lamp (left)
• Roof marker lamp (right)
• S205
• S215 (in brake clutch harness)
• S345
• Transfer case shift control switch
• Unlock relay
• Vanity mirror lamp (left)
• Vanity mirror lamp (right)
• Windshield wiper motor module