INTERIOR LIGHTS – Chevrolet Silverado 2500 2004 – SYSTEM WIRING DIAGRAMS

INTERIOR LIGHTS

Courtesy Lamps Wiring Diagram (1 of 3) for Chevrolet Silverado 2500 2004

List of elements for Courtesy Lamps Wiring Diagram (1 of 3) for Chevrolet Silverado 2500 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 Silverado 2500 2004

List of elements for Courtesy Lamps Wiring Diagram (2 of 3) for Chevrolet Silverado 2500 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 Silverado 2500 2004

List of elements for Courtesy Lamps Wiring Diagram (3 of 3) for Chevrolet Silverado 2500 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 Silverado 2500 2004

List of elements for Instrument Illumination Wiring Diagram (1 of 3) for Chevrolet Silverado 2500 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 Silverado 2500 2004

List of elements for Instrument Illumination Wiring Diagram (2 of 3) for Chevrolet Silverado 2500 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 Silverado 2500 2004

List of elements for Instrument Illumination Wiring Diagram (3 of 3) for Chevrolet Silverado 2500 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