INTERIOR LIGHTS – Chevrolet Cab & Chassis Silverado 3500 2004 – SYSTEM WIRING DIAGRAMS

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram (1 of 3) for Chevrolet Cab & Chassis Silverado 3500 2004

List of elements for Courtesy Lamps Wiring Diagram (1 of 3) for Chevrolet Cab & Chassis Silverado 3500 2004:

• A11
• B12
• Body control module (lower left side of dash, below steering column)
• C3 a6
• Cargo lamp low ctrl
• Class 2 data
• Class 2 serial data
• Convenience package comfort and decor level #3
• Crew cab only
• Crew cab w/ ye9
• Ctsy lamp ctrl
• Ctsy lamp on sig
• Ctsy lamp power
• Dome lamp switch
• Door ajar sig
• Driver door latch assembly
• Driver door module (ddm) (in left front door)
• F tan
• G305 (left "b" pillar)
• G306 (on right "b" pillar)
• Headlamp switch
• Int lamp defeat sig
• Int lamp defeat sw
• Left front door courtesy lamp
• Left rear door courtesy lamp (2003)
• Left rear door latch assembly
• Lf door ajar sig
• Low ref
• Lr door ajar sig
• Merchandised package luxury edition
• Rear dome lamp
• Rf door ajar sig
• Right rear door courtesy lamp (2003)
• Right rear door latch assembly
• Rr door ajar sig
• Sp205 (left side of dash)
• Tan
• W/ ye9 or w/ y91
• W/o ye9
• Y91 =
• Ye9 =

Courtesy Lamps Wiring Diagram (2 of 3) for Chevrolet Cab & Chassis Silverado 3500 2004

List of elements for Courtesy Lamps Wiring Diagram (2 of 3) for Chevrolet Cab & Chassis Silverado 3500 2004:

• (in headliner harness between overhead console reading lamps and i/p
• Cargo lamp
• Convenience package comfort and decor level 3
• Crew cab w/ ye9
• Dome
• Except crew cab w/ ye9
• Left vanity mirror lamp
• Map lamps
• Merchandised package luxury edition
• Overhead console
• Reading
• Rear courtesy reading lamps (crew cab w/ ye9)
• Relay block)
• Right vanity mirror lamp
• S321
• S345
• Tan
• W/ y91 and crew cab w/ ye9
• W/ ye9 and crew cab w/o ye9
• W/ ye9 except crew cab
• Y91 =
• Ye9 =

Courtesy Lamps Wiring Diagram (3 of 3) for Chevrolet Cab & Chassis Silverado 3500 2004

List of elements for Courtesy Lamps Wiring Diagram (3 of 3) for Chevrolet Cab & Chassis Silverado 3500 2004:

• (2003)
• A12
• B10
• Bin lamp
• C10
• C11
• Cargo lamp switch
• Class 2 data
• Convenience package comfort and decor level #3
• Ctsy lamp control
• Ctsy lamp power
• Door ajar sig
• Front passenger door courtesy light
• Front passenger door latch assembly
• Front passenger door module (fpdm) (in right front door)
• G200 (behind right side of dash, near right "a" pillar)
• G203 (near left "a" pillar)
• I/p compartment lamp
• I/p relay block (below left side of dash, left of steering column)
• Left i/p courtesy lamp
• Left i/p fuse block (under left side of dash)
• Low ref
• Merchandised package luxury edition
• Right i/p courtesy lamp (2003)
• Right i/p fuse block (lower right side of dash)
• S202
• S205
• S213
• Tan
• W/ ye9 or w/ y91
• W/o ye9
• Y91 =
• Ye9 =

Instrument Illumination Wiring Diagram (1 of 3) for Chevrolet Cab & Chassis Silverado 3500 2004

List of elements for Instrument Illumination Wiring Diagram (1 of 3) for Chevrolet Cab & Chassis Silverado 3500 2004:

• 2 hi ind
• 2 hi ind control
• 4 hi ind
• 4 hi ind control
• 4 lo ind
• 4 lo ind control
• 5 volt ref
• A11
• A12
• Auto 4wd ind
• B pnk
• B11
• Body control module (lower left side of dash, below steering column)
• Crew cab only
• Diff lock ind control
• Dimming input
• Dimming return
• Drl off
• Drl off ind ctrl
• Fog lamp rly ctrl
• G305 (left "b" pillar)
• G306 (right "b" pillar)
• Headlamp on
• Headlamp on ind ctrl
• Headlamp switch
• Instrument panel cluster
• Instrument panel dimming
• Left rear window switch
• Np1 = transfer case, electric shift control, 2 speed np8 = transfer case active, 2 speed pushbutton control
• Pnk
• Red
• Right rear window switch
• S212
• Transfer case shift control module (behind headlamp switch)
• Transfer case shift control switch
• W/ np1
• W/ np8

Instrument Illumination Wiring Diagram (2 of 3) for Chevrolet Cab & Chassis Silverado 3500 2004

List of elements for Instrument Illumination Wiring Diagram (2 of 3) for Chevrolet Cab & Chassis Silverado 3500 2004:

• (left rear of vehicle, near spare tire bracket)
• (near left "a" pillar)
• 2ws ind
• 2ws ind control
• 4ws ind
• 4ws ind control
• Control
• Fog lamp circuit
• G203
• Hvac control module
• Inflatable restraint i/p module disable switch
• Inflatable restraint steering wheel module coil
• Lower left
• Lower right
• Multifunction accessory switch
• Nca
• Overhead console
• Power take off (pto) switch
• Rear wheel steering control module
• Rear wheel steering mode select switch
• Remote playback device-cd player
• S205
• Steering wheel
• Tan
• Tow ind
• Tow mode ind
• Traction control switch
• Transfer case shift control switch
• Underhood fuse block (left side of engine compt, near battery)
• Upper left
• Upper right

Instrument Illumination Wiring Diagram (3 of 3) for Chevrolet Cab & Chassis Silverado 3500 2004

List of elements for Instrument Illumination Wiring Diagram (3 of 3) for Chevrolet Cab & Chassis Silverado 3500 2004:

• (lower left side of dash)
• A11
• C10
• Driver window/door lock switch
• Electronic suspension system
• Exterior lamps
• Firm indicator
• Fog lamp
• Front passenger window/door lock switch
• G100 (lower left side of radiator core support)
• G200 (behind right side of dash, near right "a" pillar)
• G203 (near left "a" pillar)
• Headlamp leveling switch
• I/p relay block (below left side of dash, left of steering column)
• Left i/p fuse block
• Multifunction accessory switch
• Right i/p fuse block (lower left side of dash)
• Roof beacon switch
• S101
• S202
• S345
• Selectable ride switch
• W/ t89
• W/ t96