Chevrolet Trax Wiring Diagram Manual 2015–2016, 2018–2020 & 2022 – 1.4L Turbo Electrical System, ECM, BCM, ABS, GMLAN & Full OEM Circuit Schematics

Overview

This Chevrolet Trax wiring manual package provides detailed electrical schematics for professional diagnostics, harness and connector tracing, module testing, electrical repair, retrofit planning and workshop troubleshooting.

The uploaded manuals cover multiple 1.4L Turbo configurations, including VIN B and VIN M engine-performance circuits where applicable. The diagrams document ECM-controlled fuel, ignition, turbocharger, emissions, sensor and actuator circuits together with BCM, ABS, transmission and vehicle communication networks.

Vehicle Coverage

• Chevrolet Trax 2015 LT
  • 1.4L engine
  • 78 pages
• Chevrolet Trax 2016 LTZ
  • 1.4L engine
  • 78 pages
• Chevrolet Trax 2018 LT
  • 1.4L engine
  • 104 pages
• Chevrolet Trax 2019 Premier
  • 1.4L engine
  • 104 pages
• Chevrolet Trax 2020 Premier
  • 1.4L engine
  • 104 pages
• Chevrolet Trax 2022 LT
  • 1.4L engine
  • 90 pages
• Engine circuit coverage: 1.4L Turbo, including VIN B / VIN M configurations where applicable
• Total package: 6 PDF manuals / 558 pages
• Approx. total file size: 38.4 MB
• Format: PDF
• Language: English

Technical Highlights

• Engine Control Module (ECM)
• Body Control Module (BCM)
• Electronic Brake Control Module / ABS
• 1.4L Turbo VIN B and VIN M engine circuits
• High-speed GMLAN
• Low-speed GMLAN
• LIN / module communication circuits where applicable
• Computer data lines
• Power distribution
• Ground distribution
• Manual HVAC / A/C
• Cooling fan control
• Starting and charging
• Automatic transmission
• Shift interlock
• Turbocharger bypass and wastegate controls
• Fuel injection and ignition
• EVAP / emissions circuits
• Headlights and exterior lighting
• Interior lighting
• Anti-theft / immobilizer / Pass-Key
• Door locks and keyless entry
• Instrument cluster
• Wiper / washer
• Supplemental restraints / airbags

Table of Content

• Air Conditioning / HVAC
  • Manual A/C circuits
  • HVAC control module
  • Blower motor and blower control
  • A/C compressor and clutch
  • Refrigerant pressure sensor
  • Ambient-air temperature sensor
  • Evaporator temperature sensor
  • Mode and recirculation door actuators
  • Cooling fan controls
  • Electrical auxiliary heater where equipped
• Anti-Lock Brakes
  • ABS / EBCM circuits
  • Brake pressure modulator
  • Wheel-speed sensors
  • Brake booster vacuum sensor
  • Brake booster pump
  • Steering-wheel angle sensor
  • GMLAN communication
• Anti-Theft & Door Locks
  • Forced-entry circuits
  • Pass-Key / immobilizer
  • Remote-function / keyless-entry circuits
  • Door-lock actuators
  • Door-ajar circuits
  • Hood-ajar switch
  • Liftgate latch and release
  • BCM security functions
• Body Control & Computer Data Lines
  • Body Control Module
  • High-speed GMLAN
  • Low-speed GMLAN
  • LIN bus circuits
  • Module serial-data communication
  • Wake-up and accessory data lines
• Cruise Control
  • Steering-wheel controls
  • Brake-pedal inputs
  • ECM interface
  • Transmission-related signals
• Engine Performance
  • 1.4L VIN B Turbo circuits
  • 1.4L VIN M Turbo circuits
  • Engine Control Module
  • Fuel injection
  • Ignition
  • Turbocharger bypass control
  • Wastegate control
  • Fuel-pressure and fuel-level circuits
  • Engine coolant temperature
  • Accelerator-pedal position
  • Oxygen sensors
  • EVAP / purge system
  • Cooling-fan control
  • Generator control

The 2019 manual contains a dedicated 1.4L VIN B Engine Performance Circuit, while the 2022 manual contains dedicated 1.4L VIN M engine-management schematics.

• Exterior Lighting & Headlights
  • Low-beam headlamps
  • High-beam control
  • Daytime running lights
  • Turn signals
  • Stop lamps
  • Backup lamps
  • Parking lamps
  • License-plate lamps
  • Fog lamps where equipped
• Ground Distribution
  • Engine grounds
  • Body grounds
  • Instrument-panel grounds
  • Rear-body grounds
  • Module grounding points

Ground-distribution references are integrated throughout the manuals, including rear lighting and body circuits.

• Instrument Cluster & Interior Lighting
  • Driver Information Center
  • Warning indicators
  • Interior lamps
  • Courtesy lamps
  • Ambient lighting
  • Instrument illumination
  • Switch backlighting
• Power Distribution
  • Battery feeds
  • Underhood fuse block
  • Instrument-panel fuse block
  • BCM power supplies
  • ECM / TCM feeds
  • Ignition feeds
  • Accessory circuits
  • Relay circuits
• Starting & Charging
  • Starter control
  • Battery-current sensor
  • Generator control
  • Run / crank circuits
  • ECM starting interface
• Supplemental Restraints
  • Steering-wheel airbag
  • Passenger airbag
  • Knee airbags where equipped
  • Inflatable Restraint Sensing and Diagnostic Module
  • Seat-belt circuits
  • Passenger-airbag indicators
  • GMLAN restraint communication

The restraint diagrams are presented as dedicated multi-part circuits in the uploaded manuals.

• Transmission
  • Automatic transmission circuits
  • Transmission Control Module
  • Internal mode switch
  • Transmission solenoid assembly
  • Park / neutral signals
  • ECM / TCM communication
  • Shift interlock
  • Transmission shift-lock actuator
• Wiper / Washer
  • Front windshield wiper
  • Rear wiper
  • Washer relay
  • Wiper motor relay
  • Park-switch circuits
  • BCM control