Features

• Models Covered:
  • GMC Canyon (2019–2022)
  • Chevrolet Colorado (2019–2022)
• Format: PDF – fully searchable and easy to navigate.
• Comprehensive Coverage: Complete wiring diagrams for all systems.
• Authenticity: Manufacturer-approved OEM documentation.

Why Choose This Manual?

• Authentic OEM Resource: Direct from GM, ensuring accuracy and reliability.
• Comprehensive Detail: Covers every electrical system in your GMC Canyon or Chevrolet Colorado.
• Ease of Use: Professionally organized and fully indexed for quick reference.
• Professional Quality: Trusted by dealership technicians worldwide.

Who Needs This Manual?

• GMC Canyon & Chevrolet Colorado Owners: Understand and troubleshoot your vehicle’s wiring.
• Auto Technicians: Access precise and reliable electrical diagrams.
• DIY Enthusiasts: Perform electrical repairs with confidence.

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Get the 2019-2022 GMC Canyon & Chevrolet Colorado wiring diagram manual in a convenient PDF format today. Equip yourself with the same trusted resource used by authorized GM technicians for seamless diagnostics and repairs. 🚗📘

Table of Contents: 2019-2022 GMC Canyon Chevrolet Colorado Wiring Diagram

Sample Pages

Common Issues with the 2019-2022 GMC Canyon Overview

2019–2022 GMC Canyon Overview

The GMC Canyon is GMC’s midsize pickup, offering a balance between everyday drivability and light-duty truck utility. It shares a platform with the Chevrolet Colorado but leans more toward upscale features and refinement.

Also Called / Closely Related To:

1. Chevrolet Colorado
   • The Canyon and Colorado are mechanically identical, built on the same GM GMT 31XX platform.
   • Only real differences are in styling, badging, trim naming, and feature availability.
2. Holden Colorado (Australia & New Zealand)
   • Internationally, a version of this platform was sold under the Holden badge before the brand was retired.
3. Chevrolet S10 (Latin America)
   • Based on a variation of the same platform, the S10 is a global twin.
4. Isuzu D-Max (Early platform collaboration)
   • Earlier generations of the Canyon/Colorado platform were co-developed with Isuzu.
   • However, the D-Max is now independently developed.

Powertrain & Performance

Max Towing Capacity:

• Gas V6: 7,000 lbs
• Diesel: 7,700 lbs
• 4-cylinder: 3,500 lbs

Trim Levels

⚠️ Common Issues & Reliability

The GMC Canyon is generally reliable, though several issues have been noted:

1. Infotainment System Glitches

• • • Issue: Touchscreen freezing, Bluetooth disconnections.
    • Fix: Software update or unit replacement.
    • TSB: #PIC6428 – Updated software for infotainment system.

2. Transmission Shudder (V6 Models)

• • • Issue: Shuddering or hard shifts.
    • Cause: Torque converter issues or old transmission fluid.
    • Fix: Transmission fluid flush with GM-approved fluid or torque converter replacement.

3. Diesel DEF/DPF System Malfunctions

• • • Issue: Check engine lights, loss of power in Duramax models.
    • Fix: Sensor replacement, DPF regen or cleaning.

4. Headlight Moisture and Flickering

• • • Issue: Moisture in headlamp housing; flickering.
    • Fix: Housing replacement under warranty.

5. Service Brake System Warning

• • • Cause: Malfunctioning brake pressure sensor.
    • Fix: Sensor or module replacement.

Common Mechanical Issues

1. Engine Problems
   • 2.5L I4 and 3.6L V6 Gasoline Engines:
     • Timing Chain Stretch (3.6L): Rattling noises at startup due to worn tensioners or guides.
     • Oil Consumption (3.6L): Some reports of excessive oil use (1 quart per 1,000 miles).
   • 2.8L Duramax Diesel:
     • EGR/DPF Clogging: Frequent short trips can cause regeneration issues.
     • Turbocharger Failures: Boost leaks or wastegate problems in high-mileage trucks.
2. Transmission
   • 8-Speed Automatic (8L45/8L90):
     • Hard Shifts or Shuddering: Often linked to degraded transmission fluid.
     • Torque Converter Failure: Causes vibration under acceleration (TSB 18-NA-355).
3. Suspension/Steering
   • Steering Column Clunk: Loose intermediate shaft (TSB 19-NA-006).
   • Leaf Spring Squeaks: Common in off-road models (apply grease or replace bushings).
4. Electrical Issues
   • Infotainment (GMC IntelliLink):
     • Screen freezes, Apple CarPlay/Android Auto disconnections.
   • Battery Drain: Parasitic draw from faulty modules or aftermarket accessories.
5. Brake System
   • Premature Rotor Warping: Especially in heavier diesel models.

Maintenance Schedule (General)

Recalls (2019–2022)

• • 2020–2021: Seatbelt assembly defect – retractor failure.
  • 2020: Rearview camera image not displaying (software update required).
  • 2019–2020: Brake system vacuum pump failure in certain models.
  • Transmission Fluid Leak (2020–2021): NHTSA 21V-596 (cooler line rupture risk).
  • Takata Airbags (2019–2020): NHTSA 16V-356 (passenger-side inflator rupture risk).
  • Fuel Pump Failure (2021–2022): NHTSA 22V-002 (stalling risk; extended warranty to 10 years/120k miles).

Check the NHTSA website with your VIN for specific recalls.

 Top Competitors

✅ Pros

• • Smooth ride for a midsize truck
  • Variety of engine choices (including diesel)
  • Strong towing capacity
  • AT4 offers serious off-road capability
  • Denali trim adds premium touches

❌ Cons

• • Less interior space than full-size trucks
  • V6 transmission can be finicky
  • Some infotainment bugs reported
  • Diesel maintenance can be costly

Recommendations

1. Transmission Maintenance:
   • Flush fluid every 45k–60k miles (use Dexron VI).
   • Address shudder early with fluid exchange or torque converter replacement.
2. Diesel Care (2.8L):
   • Drive highway speeds regularly to burn off DPF soot.
   • Use diesel-specific oil (e.g., Dexos D).
3. Pre-Purchase Inspection:
   • Test-drive for transmission behavior and steering feel.
   • Scan for codes (e.g., P0016 for timing chain misalignment).
4. Check Recalls: Use NHTSA VIN lookup or GMC’s recall portal.

Reliability Verdict

• Pros: Strong towing (up to 7,700 lbs with diesel), comfortable ride.
• Cons: Transmission quirks, diesel maintenance costs.
• Best Years: 2021–2022 (refined electronics, fewer reports of major issues).
• Worst Year: 2019 (early 8-speed transmission bugs).

Ideal For: Buyers needing a smaller truck who prioritize fuel efficiency (diesel: ~30 mpg highway). Avoid neglected examples—opt for CPO or well-documented used models.

Budget Tip: The 2.5L I4 is reliable but underpowered for towing; the 3.6L V6 offers the best balance.

OBD-II Codes

Diagnostic Trouble Codes (DTCs) are standardized codes used by vehicle onboard diagnostics systems to identify issues within the vehicle. These codes are consistent across most manufacturers, including GMC and Chevrolet, and are typically categorized as follows:

1- P-codes (Powertrain): Related to engine and transmission systems. 

The P00xx series of OBD-II diagnostic trouble codes (DTCs) pertain to the vehicle’s powertrain, specifically focusing on fuel and air metering as well as auxiliary emission controls. These codes are standardized and apply universally across all OBD-II compliant vehicles, though the exact diagnostic and repair procedures may differ depending on the make and model. 

Here’s a summary of the P00xx codes:

• P0001 to P0004: Issues related to the Fuel Volume Regulator Control Circuit, including open circuits, range/performance problems, and circuit low/high conditions. 
• P0005 to P0007: Concerns with the Fuel Shutoff Valve “A” Control Circuit, such as open circuits and low/high circuit conditions.
• P0008 to P0009: Engine Position System Performance issues for Banks 1 and 2, respectively. 
• P000A to P000D: Slow response detected in the “A” or “B” Camshaft Position for Banks 1 and 2.
• P000E to P000F: Problems involving the Fuel Volume Regulator Control exceeding learning limits and activation of the Fuel System Over Pressure Relief Valve. 
• P0010 to P0015: Malfunctions in the “A” or “B” Camshaft Position Actuator Circuit, including timing over-advanced or over-retarded conditions for Bank 1. 
• P0016 to P0019: Crankshaft Position and Camshaft Position correlation issues across Banks 1 and 2, Sensors A and B. 
• P001A to P001F: Circuit problems in the “A” Camshaft Profile Control for Banks 1 and 2, including open circuits and low/high circuit conditions. 
• P0020 to P0025: Similar to P0010 to P0015 but pertaining to Bank 2, involving the “A” or “B” Camshaft Position Actuator Circuit with timing over-advanced or over-retarded conditions. 
• P0026 to P0029: Range or performance issues in the Intake and Exhaust Valve Control Solenoid Circuits for Banks 1 and 2. 
• P002A to P002F: Circuit anomalies in the “B” Camshaft Profile Control for Banks 1 and 2, including open circuits and low/high circuit conditions. 
• P0030 to P0032: Heated Oxygen Sensor (HO2S) Heater Control Circuit issues for Bank 1 Sensor 1, encompassing circuit malfunctions and low/high conditions. 
• P0033 to P0034: Problems with the Turbo Charger Bypass Valve Control Circuit. 

2- B-codes (Body): Pertaining to body systems such as airbags and climate control. 

OBD-II Body Codes, designated with a ‘B‘ prefix, pertain to issues involving the vehicle’s body systems, including airbags, seatbelts, and occupant sensors.

Examples of these codes include:

• B0001: Side Airbag Deployment Control 
• B0010: Frontal Stage 1 Deployment Control
• B0020: Seatbelt Pretensioner Deployment Control
• B0030: Seatbelt Load Limiter Deployment Control
• B0040: Side Restraints Sensor
• B0050: Driver Seat Recline Position Restraints Sensor
• B0060: Passenger Seat Occupant Classification Sensor

These codes are standardized across manufacturers, but specific diagnostic and repair procedures may vary depending on the vehicle’s make and model.

C-codes (Chassis): Concerning systems like anti-lock brakes and steering. 

OBD-II diagnostic trouble codes (DTCs) are standardized codes used by vehicle onboard diagnostics systems to identify and communicate issues. Codes beginning with the letter “C” pertain to the chassis, encompassing components such as the anti-lock braking system (ABS), traction control, and steering mechanisms. ​

Here is a summary of some common generic OBD-II chassis codes:

• C0000: Vehicle Speed Information Circuit Malfunction​

• C0035 to C0051: Malfunctions related to wheel speed circuits and sensors, including left and right, front and rear wheels.

• C0060 to C0095: Issues concerning ABS solenoid circuits for each wheel.​

• C0110: Pump Motor Circuit Malfunction​

• C0121 to C0128: Valve relay circuit and brake fluid level circuit malfunctions.​

• C0141 to C0156: Traction Control System (TCS) solenoid circuit malfunctions.​

• C0161: ABS/TCS Brake Switch Circuit Malfunction​

• C0221 to C0229: Wheel speed sensor circuit issues, such as open circuits and erratic signals.​

• C0235 to C0238: Rear wheel speed signal circuit malfunctions.​

• C0241 to C0298: Various Electronic Brake Control Module (EBCM) and communication circuit issues.​

• C0300 to C0387: Transfer case and motor circuit malfunctions.​

• C0472 to C0499: Steering handwheel speed sensor and assist control circuit issues.​

• C0503 to C0594: Steering assist control solenoid and position sensor circuit malfunctions.​

• C0611 to C0620: VIN information errors and position sensor malfunctions.​

U-codes (Network): Related to network communication issues between modules. 

OBD-II U-codes, pertain to network communication issues within a vehicle’s onboard systems. These codes are crucial for diagnosing problems related to the communication between various control modules.

Understanding U-Codes

OBD-II Diagnostic Trouble Codes (DTCs) are standardized codes used to identify issues in vehicles. Each code consists of five characters:

• First Character (Letter): Indicates the system related to the fault.
  • P: Powertrain (engine and transmission)
  • B: Body (airbags, climate control, etc.)
  • C: Chassis (brakes, suspension) 
  • U: Network (communication issues between modules)
• Second Character (Digit): Specifies whether the code is generic or manufacturer-specific.
  • 0: Generic (defined by SAE)
  • 1: Manufacturer-specific

U-codes specifically address issues where control modules fail to communicate properly over the vehicle’s network, such as the Controller Area Network (CAN) bus. These communication failures can lead to various symptoms, including warning lights, malfunctioning systems, or even vehicle stalling.

Examples of U-Codes

Here are some examples of U-codes and their meanings:

• U0100: Lost Communication with ECM/PCM “A”
• U0101: Lost Communication with Transmission Control Module (TCM) 
• U0073: Control Module Communication Bus “A” Off 
• U0300: Internal Control Module Software Incompatibility

These codes help technicians pinpoint the source of communication problems within the vehicle’s network.

Troubleshooting U-Codes

Diagnosing and resolving U-codes typically involves:

1. Checking the Battery and Charging System: Ensure the battery is fully charged and the charging system is functioning correctly, as voltage issues can affect module communication. 
2. Inspecting Wiring and Connectors: Look for damaged wires, loose connections, or corrosion in the communication circuits. 
3. Testing Control Modules: Use diagnostic tools to verify if specific modules are responsive and communicating as expected. 
4. Updating or Reprogramming Modules: In cases like U0300, software incompatibility may require updating or reprogramming the affected module. 

Regarding fuse box details for these vehicles:

GMC Canyon (2019–2022):

The GMC Canyon is equipped with two primary fuse boxes:

1. Engine Compartment Fuse Block: Located on the driver’s side of the engine compartment.
2. Instrument Panel Fuse Block: Situated under the glove box, behind the passenger side cowl side trim panel.

Chevrolet Colorado (2019–2022):

Similarly, the Chevrolet Colorado features two main fuse boxes:

1. Instrument Panel Fuse Box: Located under the glove box, behind the passenger side cowl side trim panel. 
2. Engine Compartment Fuse Box: Positioned in the engine compartment on the driver’s side.