GMC Sierra Denali 3500 HD 2025 Safety Information And Operating Instructions
GMC Sierra Denali 3500 HD 2025 Safety Information And Operating Instructions

GMC Sierra Denali 3500 HD 2025 Safety Information And Operating Instructions

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2025
Sierra/Sierra Denali
2500 HD/3500 HD
Essential Operating and
Safety Information

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Summarization of Contents

Introduction
California Proposition 65 Warning
Warning about chemicals in vehicle products known to cause cancer and birth defects.
Using this Manual
Guidance on how to effectively use the owner's manual for information.
Danger, Warning, and Caution
Explanation of safety alert symbols and their meanings.
Symbols
Explanation of various symbols used in the manual and on the vehicle.
Vehicle Symbol Chart
Chart detailing additional symbols found on the vehicle and their meanings.
Keys, Doors, and Windows
Keys and Locks
Information on vehicle keys and door lock operation.
Doors
Details on door operation and safety when transporting items.
Vehicle Security
Information on the vehicle's theft-deterrent and immobilizer systems.
Interior Mirrors
Description and operation of interior mirrors, including the rear camera mirror.
Windows
Information on window operation and safety notices.
Seats and Restraints
Head Restraints
Proper adjustment and importance of head restraints for safety.
Front Seats
Details on front seat adjustments and features.
Rear Seats
Information regarding rear seat features and reminders.
Seat Belts
Instructions on proper seat belt usage and safety.
Airbag System
Information on the vehicle's airbag system, locations, and operation.
Child Restraints
Guidance on selecting and using child restraint systems.
Instruments and Controls
Controls
Overview of various vehicle controls and their functions.
Warning Lights, Gauges, and Indicators
Explanation of dashboard warning lights, gauges, and indicators.
Seat Belt Reminders
Description of seat belt reminder systems for all occupants.
Airbag Readiness Light
Indicates the status of the airbag system's electrical functions.
Passenger Airbag Status Indicator
Indicates the status of the front passenger airbag.
Brake System Warning Light
Alerts the driver to potential brake system issues.
Tire Pressure Light
Indicates the status of the tire pressure monitoring system.
Lighting
Exterior Lighting
Operation of exterior lamps including headlamps and parking lamps.
Hazard Warning Flashers
How to activate and deactivate hazard warning flashers.
Driving and Operating
Driving Information
General advice and tips for various driving scenarios.
Starting and Operating
Procedures for starting the vehicle and basic operation.
Engine Exhaust
Safety information regarding engine exhaust and carbon monoxide.
Automatic Transmission
Details on automatic transmission operation and modes.
Drive Systems
Information on the vehicle's drive systems, including four-wheel drive.
Brakes
Information on the brake system, including the electric parking brake.
Ride Control Systems
Operation of traction and electronic stability control systems.
Advanced Driver Assistance Systems
Overview of ADAS features and their limitations.
Fuel
Guidance on fueling the vehicle, including different models.
Vehicle Care
General Information
General information on vehicle service and parts.
California Perchlorate Materials Requirements
Information on perchlorate materials in automotive applications.
Vehicle Checks
Routine checks for vehicle maintenance.
Headlamp Aiming
Procedures for aiming vehicle headlamps.
Wheels and Tires
Information on tires, wheels, and their maintenance.
If a Tire Goes Flat
Steps to follow in the event of a tire blowout or flat.
Tire Changing
Detailed instructions on how to change a tire.
Jump Starting
Procedure for jump starting a vehicle with a dead battery.
Towing the Vehicle
Guidelines and precautions for towing a disabled vehicle.
Service and Maintenance
Additional Maintenance and Care
Extra maintenance tips for vehicle care.
Windshield
Instructions for cleaning and maintaining the windshield.
Wiper Blades
Guidance on cleaning and replacing wiper blades.
Interior Glass
Instructions for cleaning interior glass surfaces.
Customer Information
Online Account
Information on creating and managing Chevrolet/GMC online accounts.
Membership Benefits
Overview of benefits available through online accounts.
Roadside Assistance Program
Details and contact information for roadside assistance services.
Reporting Safety Defects
Reporting Safety Defects to the United States Government
How to report vehicle safety defects to the NHTSA in the US.
Reporting Safety Defects to General Motors
How to report vehicle safety defects directly to General Motors.
Vehicle Data Recording and Privacy
Cybersecurity
Information on protecting vehicle electronics and customer data.
Event Data Recorders
Details about the vehicle's Event Data Recorder (EDR).

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