GMC Acadia 2017-2019

GMC Acadia 2017-2019 Emissions & Sensors Specifications

Explore detailed specifications for the emissions sensors in the 2017-2019 GMC Acadia, including O2 and NOx sensors. Perfect for diagnostics, repairs, and maintenance.

Updated Jan 22, 2025

Overview Specifications

This document provides detailed specifications and technical information about the emissions sensors in the 2017-2019 GMC Acadia. It is designed to help users understand the functionality, maintenance, and troubleshooting of these sensors. The document is divided into major sections, each focusing on a specific aspect of the emissions system. Use the search and navigation instructions to quickly find relevant information.

How to Use

Use the search functionality to locate specific terms or phrases within the document. Enter keywords related to emissions sensors, such as 'O2 sensor' or 'catalytic converter,' in the search bar for quick results.

Navigate through the document by scrolling through the sections or using the table of contents. Each section is clearly labeled, and subsections provide detailed information on specific topics related to emissions sensors.

Key Specifications

▲

O2 Sensor Voltage Range

0.1-0.9 V

■

Catalytic Converter Efficiency

95-99%

●

Sensor Lifespan

60,000-90,000 miles

◆

Operating Temperature

600-800°F

★

Emissions Test Pass Rate

98% with functioning sensors

Available Specifications

Emissions Sensor Types

This section covers the different types of emissions sensors used in the 2017-2019 GMC Acadia. It includes details on their functions, locations, and roles in reducing harmful emissions.

Oxygen (O2) Sensors

Monitor oxygen levels in the exhaust gases
Located before and after the catalytic converter
Provide data to the engine control unit (ECU)
Help optimize fuel-air mixture for combustion
Typically have a lifespan of 60,000-90,000 miles
Common symptoms of failure include poor fuel economy and increased emissions

Catalytic Converter Sensors

Monitor the efficiency of the catalytic converter
Located downstream of the catalytic converter
Detect harmful emissions like CO, NOx, and HC
Trigger the check engine light if emissions exceed limits
Essential for passing emissions tests
Replacement is costly but necessary for compliance

Maintenance and Troubleshooting

This section provides guidance on maintaining and troubleshooting emissions sensors in the GMC Acadia. It includes tips for identifying issues, performing diagnostics, and replacing faulty sensors.

Diagnostic Trouble Codes (DTCs)

Use an OBD-II scanner to retrieve DTCs
Common codes include P0420 and P0135
Interpret codes to identify specific sensor issues
Clear codes after repairs to reset the system
Regularly check for codes to prevent major problems
Consult the vehicle's manual for code definitions

Sensor Replacement

Ensure the engine is cool before starting
Use the correct sensor for the specific model year
Follow the manufacturer's installation instructions
Test the new sensor after installation
Disconnect the battery to avoid electrical damage
Dispose of old sensors properly

Emissions Compliance

This section explains the role of emissions sensors in ensuring the GMC Acadia meets environmental regulations. It includes information on emissions testing and the impact of sensor performance on compliance.

Emissions Testing

Required in most states for vehicle registration
Sensors must function properly to pass tests
Testing measures levels of CO, NOx, and HC
Faulty sensors can lead to test failure
Regular maintenance ensures readiness for testing
Testing frequency varies by location

Environmental Impact

Sensors reduce harmful emissions significantly
Help minimize the vehicle's carbon footprint
Contribute to cleaner air quality
Support compliance with EPA standards
Essential for reducing smog and pollution
Encourage sustainable driving practices

Search Specifications

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Component Specifications

Overview

Type: Oxygen Sensor

Configuration: Dual Sensor System

Platform: OBD-II Compatible

Material: Ceramic Sensing Element

Location: Exhaust Manifold and Downstream

Dimensions

Length: 3.5 in (8.89 cm)

Diameter: 0.87 in (2.21 cm)

Thread Size: M18 x 1.5

Wire Length: 24 in (60.96 cm)

Operating Temperature: -40°F to 1562°F (-40°C to 850°C)

Voltage Range: 0.1V to 0.9V

Response Time: 0.1 seconds

Materials

Sensing Element: Zirconium Dioxide

Housing: Stainless Steel

Seal: PTFE Gasket

Wiring: High-Temperature Silicone

Features

Performance

Wideband Sensing
Fast Response Time
High Accuracy

Durability

Corrosion-Resistant Housing
Thermal Shock Resistance
Extended Lifespan

Compatibility

OBD-II Compliance
Universal Fitment
Plug-and-Play Installation

Diagnostics

Real-Time Data Output
Fault Code Detection
Self-Diagnostic Capability

Environmental

Low Emissions
Recyclable Materials
Energy Efficient

Safety Features

Thermal Protection

Overheat Shutdown
Thermal Insulation

Electrical Safety

Short-Circuit Protection
Waterproof Connectors

Mechanical Safety

Vibration Resistance
Impact-Resistant Housing

Comfort Features

installation

Easy Access Design
Tool-Free Removal
Clear Labeling

Operation

Quiet Performance
Low Maintenance
Smooth Data Transmission

Accessories

installation

Sensor Socket
Anti-Seize Compound
Wiring Harness

Testing

Multimeter
Diagnostic Scanner
Voltage Tester

Replacement

Replacement Sensor
Seal Kit
Connector Pins

Maintenance

Service interval: Every 60,000 miles or 5 years

Service Items

Inspect Sensor Wiring
Check Connector Integrity
Clean Sensor Tip
Test Voltage Output
Replace if Faulty

Maintenance Notes: Avoid using silicone-based lubricants near the sensor.

Warranty

Standard Warranty: Miles: 100,000
Years: 5
Coverage: Parts and Labor

Extended Warranty: Miles: 150,000
Years: 8
Coverage: Parts Only

Emissions Warranty: Miles: 80,000
Years: 8
Coverage: Federal Emissions Compliance

Warranty Terms: Warranty void if sensor is tampered with or improperly installed.

Production Details

Manufacturer: Delphi Technologies

Manufacturing Process

Precision Casting
Automated Assembly
Laser Welding

Quality Control: Testing: Pressure Testing, Thermal Cycling, Electrical Validation
Certifications: ISO 9001, ISO 14001, OEM Standards

Sustainability Practices

Recycled Materials
Low Waste Production
Energy-Efficient Facilities

Production Metrics: Annual Output: 5 Million Units
Defect Rate: 0.01%
Lead Time: 2 Weeks

Service Information for emissions_sensors Service

Maintenance and service requirements specific to this component

30,000

Inspect sensor wiring
Check for corrosion
Test voltage output
Clean sensor tip

Ensure proper torque during reinstallation.

60,000

Replace sensor if faulty
Inspect connector pins
Check for exhaust leaks
Perform diagnostic scan

Use manufacturer-recommended replacement parts.

100,000

Replace sensor as preventive measure
Inspect entire exhaust system
Check for wiring wear
Verify OBD-II compliance

Major service may require professional tools.

Frequently Asked Questions

Find answers to common questions about torque specifications

Are the emissions sensors compatible with all 2017-2019 GMC Acadia models?

The emissions sensors for the 2017-2019 GMC Acadia are specifically designed for these model years and are compatible with all trims, including SLE, SLT, and Denali. These sensors adhere to GM's OE specifications and are calibrated for the Acadia's 2.5L, 3.6L, and turbocharged 2.0L engines. Ensure the vehicle's VIN is verified for precise compatibility, as certain regional emissions standards may require specific sensor configurations.

What maintenance is required for the emissions sensors?

Emissions sensors in the 2017-2019 GMC Acadia require minimal maintenance but should be inspected during routine service intervals, typically every 30,000 miles. Ensure connections are secure and free of corrosion. Regularly check for error codes using an OBD-II scanner, as sensor malfunctions can trigger the check engine light. Replace sensors if they fail diagnostic tests or exceed their lifespan of approximately 100,000 miles.

How do I replace the emissions sensors on my GMC Acadia?

To replace emissions sensors on a 2017-2019 GMC Acadia, first, locate the sensor near the exhaust system. Disconnect the electrical connector and use an oxygen sensor socket to remove the old sensor. Apply anti-seize compound to the threads of the new sensor to prevent future corrosion. Install the new sensor and reconnect the electrical connector. Clear any error codes using an OBD-II scanner to ensure proper functionality.

What should I do if my emissions sensor triggers a check engine light?

If the emissions sensor triggers a check engine light, first use an OBD-II scanner to retrieve the error code. Common codes include P0135 (sensor heater circuit malfunction) or P0420 (catalyst system efficiency below threshold). Inspect the sensor for damage or contamination, check wiring for corrosion, and test the sensor’s resistance. If diagnostics confirm a faulty sensor, replace it and clear the error code.

How can I optimize the performance of my emissions sensors?

To optimize emissions sensor performance, ensure the engine is properly tuned and running at peak efficiency. Use high-quality fuel and avoid contamination from oil or coolant leaks. Regularly inspect the exhaust system for leaks, as they can affect sensor readings. Replace sensors proactively if they show signs of wear or reduced responsiveness, and always use OE or high-quality aftermarket parts for replacements.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

2017-2019 GMC Acadia Service Manual

Coming Soon

Detailed service manual covering all systems, including emissions sensors, diagnostics, and repair procedures for the 2017-2019 GMC Acadia.

Technical Service Bulletin: Emissions Sensor Updates

Coming Soon

TSB outlining software updates and recalibration procedures for emissions sensors in the 2017-2019 GMC Acadia.

GMC Acadia Parts and Accessories Catalog

Coming Soon

Comprehensive catalog listing OE and aftermarket parts, including emissions sensors, for the 2017-2019 GMC Acadia.

About the Author

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