Overview
This Chevrolet Silverado 3500 HD wiring diagram manual package provides complete electrical circuit schematics for the uploaded 2015–2016, 2018–2020 and 2022 Silverado 3500 HD manuals.
It is designed for professional diagnostics, electrical troubleshooting, wiring repair, connector tracing, module testing, power and ground testing, fleet maintenance, towing-system diagnostics, diesel-system troubleshooting and workshop repair reference.
The package covers major Silverado 3500 HD electrical systems including automatic A/C, HVAC controls, ECM engine control, BCM body control, ABS, low-speed and high-speed GMLAN communication, LIN bus, trailer brake wiring, trailer ABS, active grille shutter, power distribution, ground distribution, exterior lighting, headlights, interior lights, radio, navigation, supplemental restraints, transmission, transfer case, tailgate systems and wiper/washer wiring.
Vehicle Coverage
- Chevrolet Silverado 3500 HD 2015 LT
- Engine: 6.0L
- Pages: 154
- Chevrolet Silverado 3500 HD 2016 LT
- Engine: 6.0L
- Pages: 176
- Chevrolet Silverado 3500 HD 2018 High Country
- Engine: 6.6L
- Pages: 169
- Chevrolet Silverado 3500 HD 2019 High Country
- Engine: 6.6L
- Pages: 170
- Chevrolet Silverado 3500 HD 2020 High Country
- Engine: 6.6L
- Pages: 170
- Chevrolet Silverado 3500 HD 2022 WT
- Engine: 6.6L
- Pages: 173
- Engine circuit coverage included:
- 6.0L VIN G where included
- 6.0L VIN B where included
- 6.6L VIN 8 where included
- 6.6L VIN Y where included
- 6.6L Turbo Diesel circuits where included
- Total package size:
- 1,012 pages
- Approx. total file size: 69.60 MB
- Format: PDF
- Language: English
The uploaded manuals include 6.0L VIN G, 6.0L VIN B, 6.6L VIN 8 and 6.6L VIN Y engine-performance circuit sections where applicable by year.
Technical Highlights
- Complete Chevrolet Silverado 3500 HD electrical wiring coverage
- ECM / Engine Control Module wiring
- BCM / Body Control Module circuits
- ABS and Electronic Brake Control Module diagrams
- Low-speed and high-speed GMLAN data line wiring
- LIN bus and serial data communication circuits
- Active grille air shutter / active bodyworks circuit on 2022 coverage
- Power distribution and fuse block diagrams
- Ground distribution circuits
- Automatic A/C, HVAC control and auxiliary heater wiring
- Cooling fan, A/C compressor and charge air cooler pump circuits
- Exterior lamps, trailer tow, headlights and horn wiring
- Interior lighting, instrument illumination and cluster circuits
- Radio, navigation, display, camera and infotainment wiring
- Trailer brake and trailer ABS-related circuits
- Power seats, memory seats, heated seats, mirrors and windows
- Door locks, anti-theft, Pass-Key and forced entry circuits
- Starting, charging, transmission and transfer case wiring
- Supplemental restraints, warning systems and wiper/washer circuits
Table of Content
- Active Bodyworks
- Active grille air shutter circuit
- Active grille air shutter actuator wiring
- Upper and lower shutter actuator links
- ECM and instrument cluster communication
- Engine wiring harness junction block
- Computer data line links
- Air Conditioning
- Automatic A/C circuit
- HVAC control module wiring
- HVAC controls and info display module
- Blower motor and blower speed control
- A/C compressor clutch wiring
- A/C compressor solenoid valve wiring
- A/C evaporator temperature sensor
- Ambient light / sunload sensor
- Inside air temperature sensor
- Duct air temperature sensors
- Mode door actuator circuits
- Air temperature door actuator circuits
- Electrical auxiliary heater circuit
- Rear defogger relay control links
- Charge air cooler coolant pump links where included
- Anti-Lock Brakes
- Anti-lock brakes circuit
- Electronic Brake Control Module wiring
- Brake pressure and brake position sensor wiring
- Wheel speed sensor circuits
- Trailer ABS circuit where included
- Trailer brake control links
- ABS power, ground and serial data communication
- Anti-Theft
- Forced entry circuit
- Pass-Key circuit
- Immobilizer control module wiring
- Door latch and hood ajar switch wiring
- Content theft deterrent links
- Security indicator control
- BCM anti-theft communication
- Body Control Modules
- Body Control Module circuit
- BCM power, ground and signal wiring
- Lighting, locks, HVAC and cluster links
- Headlamp switch and park lamp signal wiring
- Brake apply and traction control links
- Remote function actuator receive signal
- Tailgate / endgate release links
- Wiper/washer and warning system links
- Low-speed and high-speed GMLAN communication
- Computer Data Lines
- Computer data lines circuit
- Low-speed GMLAN serial data
- High-speed GMLAN serial data
- LIN / local interconnect network wiring
- Data link connector wiring
- ECM, BCM, ABS, HVAC, instrument cluster, radio and transmission communication
- Transfer case and chassis communication links
- Trailer brake communication links where included
- Cooling Fan
- Cooling fan circuit
- Cooling fan clutch circuit
- Engine coolant temperature sensor wiring
- Engine coolant level switch wiring
- Charge air cooler coolant pump where included
- ECM cooling fan command wiring
- Diesel cooling-related wiring where included
- Cruise Control
- Cruise control circuit
- Brake signal and brake apply wiring
- Steering wheel control switch wiring
- ECM cruise control links
- BCM and GMLAN cruise control communication
- Defoggers
- Defoggers circuit
- Rear defogger relay control
- Rear defogger switch and indicator wiring
- Heated mirror / glass links where equipped
- HVAC and BCM defogger communication
- Electronic Power Steering
- Electronic power steering circuit
- Power steering control module wiring
- Steering assist motor control links
- Steering system power and ground circuits
- GMLAN communication links
- Engine Performance
- 6.0L VIN G engine performance circuit
- 6.0L VIN B engine performance circuit
- 6.6L VIN 8 engine performance circuit
- 6.6L VIN Y engine performance circuit
- 6.6L Turbo Diesel engine performance circuits where included
- ECM power, ground and relay wiring
- Fuel injector and ignition coil circuits
- Accelerator pedal position sensor wiring
- Throttle body control wiring
- Camshaft and crankshaft position sensor circuits
- Mass air flow and intake air sensor wiring
- Fuel pump and fuel pressure sensor circuits
- EVAP purge and emission control wiring
- Diesel reductant injector and DEF system wiring
- Reductant pressure sensor and reductant purge solenoid wiring
- Turbocharger vane position actuator wiring where included
- A/C pressure and compressor relay control links
- High-speed GMLAN drivetrain communication
- Exterior Lights
- Backup lamps circuit
- Exterior lamps circuit
- Trailer tow circuit
- Headlamp, park lamp and tail lamp wiring
- Stop lamp, turn signal and marker lamp circuits
- Cab and pickup-bed lighting variants
- BCM-controlled exterior lighting links
- Ground Distribution
- Ground distribution circuits
- Engine compartment ground points
- Chassis and frame ground points
- Instrument panel ground circuits
- HVAC, lighting, infotainment and module grounds
- Seat, tailgate and rear body ground circuits
- Headlights
- Headlights circuit
- Headlamp switch wiring
- Low beam and high beam circuits
- HID / non-HID headlamp variants where included
- Automatic headlamp control
- BCM-controlled headlamp links
- Horn
- Horn circuit
- Horn relay wiring
- Horn switch signal wiring
- BCM horn control links
- Instrument Cluster
- Instrument cluster circuit
- Driver information center display
- Engine coolant temperature gauge
- Engine coolant level indicator links
- Warning indicator wiring
- Serial data and GMLAN communication
- Interior Lights
- Courtesy lamps circuit
- Instrument illumination circuit
- Interior lamp dimming control
- Dome, cargo and cab lighting circuits
- BCM-controlled interior lighting links
- Memory Systems
- Memory seat circuit
- Seat memory control module wiring
- Memory mirror links where equipped
- Driver preference / recall signal wiring
- Navigation / Camera
- Navigation circuit
- Infotainment display wiring
- Radio and antenna communication
- Rear view camera circuits where included
- Display and camera module links
- Data line communication with infotainment modules
- Power Distribution
- Power distribution circuits
- Battery distribution block wiring
- Underhood fuse block wiring
- Instrument panel fuse block wiring
- Engine wiring harness junction block
- Relay, fuse and ignition feed diagrams
- ECM, BCM, HVAC, ABS, radio and transmission power feeds
- Trailer brake and auxiliary chassis power feeds
- Power Door Locks
- Power door locks circuit
- Door latch and lock actuator wiring
- Driver and passenger door lock switch wiring
- Keyless entry control links
- BCM lock and unlock control wiring
- Power Mirrors
- Power mirrors circuit
- Outside mirror adjustment wiring
- Heated mirror links where included
- Folding / memory mirror links where equipped
- Power Seats
- Driver power seat circuit
- Passenger power seat circuit
- Heated seat circuits
- Memory seat module wiring
- Seat adjuster and lumbar wiring
- Seat module power and ground circuits
- Power Top / Sunroof
- Power top / sunroof circuit
- Roof opening panel motor wiring
- Sunroof switch and power feed circuits
- Power Windows
- Power windows circuit
- Driver and passenger window switch wiring
- Window motor circuits
- Door harness and BCM communication links
- Crew cab / double cab window variants where included
- Radio
- Radio circuit
- Audio amplifier wiring
- Speaker wiring
- Antenna and infotainment communication
- OnStar / telematics links where included
- Steering wheel radio control switch links
- Shift Interlock
- Shift interlock circuit
- Shift lock solenoid wiring
- Brake signal and ignition mode links
- BCM and transmission interlock wiring
- Starting / Charging
- 6.0L starting circuit
- 6.0L charging circuit
- 6.6L starting circuit
- 6.6L charging circuit
- Starter relay and starter enable wiring
- Generator and battery feed circuits
- Battery current sensor wiring
- Charge indicator control
- ECM start and charge control links
- Supplemental Restraints
- Supplemental restraints circuit
- Inflatable restraint sensing and diagnostic module wiring
- Driver and passenger airbag circuits
- Seat belt and pretensioner wiring
- Passenger presence and seat position sensor wiring
- SRS diagnostic communication
- Trailer Brake / Trailer ABS
- Trailer brake circuit
- Trailer brake power control module wiring
- Trailer brake control switch wiring
- Trailer ABS-related wiring where included
- Auxiliary chassis control module links
- Trailer serial data and brake signal circuits
- Transmission / Transfer Case
- Automatic transmission circuit
- Transmission Control Module wiring
- Transmission range and internal mode switch wiring
- Control solenoid valve assembly circuits
- 6-speed automatic transmission wiring
- 10-speed automatic transmission links where included
- Transfer case circuit
- Two-speed manual transfer case circuit
- Transfer case shift control switch
- Front axle engagement actuator wiring
- High-speed GMLAN drivetrain communication
- Trunk, Tailgate, Fuel Door
- Tailgate / endgate release circuit
- Cargo stowage box release circuit
- Rear closure and latch wiring
- Fuel door links where included
- BCM release control wiring
- Warning Systems
- Warning systems circuit
- Instrument cluster warning indicators
- Brake, restraint and system status warning links
- Driver information center warnings
- Trailer and chassis warning links where included
- Wiper / Washer
- Wiper/washer circuit
- Front windshield wiper motor wiring
- Washer pump and switch circuits
- Wiper relay and BCM control links
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