GMC Sierra 2021 Getting To Know Your Manual

GMC Sierra 2021 manual cover
Pages 20
Year 2021
Language(s)
English en

GMC Sierra 2021 Specification

The 2021 GMC Sierra 1500 is a full-size pickup truck that offers a blend of robust performance, advanced technology, and refined comfort. It is available in several trims, including the base Sierra, SLE, Elevation, SLT, AT4, and Denali, each catering to different preferences and needs. Under the hood, the Sierra 1500 offers a variety of powertrain options, ranging from a 4.3-liter V6 engine producing 285 horsepower to a 6.2-liter V8 engine generating 420 horsepower. Additionally, there is a 3.0-liter Duramax turbo-diesel inline-six engine for those prioritizing fuel efficiency and towing capacity. The transmission options include a six-speed automatic and an advanced 10-speed automatic, ensuring smooth and responsive shifts.

The 2021 Sierra 1500 stands out with its innovative MultiPro Tailgate, which provides six different configurations for enhanced cargo loading and accessibility. The truck also features an available CarbonPro composite bed, adding durability and reducing weight. Inside the cabin, the Sierra offers a spacious and comfortable environment with high-quality materials. The infotainment system comes with an 8-inch touchscreen compatible with Apple CarPlay and Android Auto, ensuring seamless connectivity. Advanced safety features are abundant, including lane departure warning, forward collision alert, and available adaptive cruise control.

Towing capacity is a highlight of the Sierra 1500, with the ability to tow up to 11,800 pounds when properly equipped. The truck's trailering technology includes an in-vehicle trailering app, trailer light test, and an integrated trailer brake controller. Fuel efficiency varies by engine choice, with the diesel engine offering up to 23 mpg city and 30 mpg highway. The 2021 GMC Sierra 1500 combines power, versatility, and luxury, making it a formidable contender in the full-size pickup truck market.

GMC Sierra 2021 F.A.Q.

How do I reset the oil life monitor on my 2021 GMC Sierra?

To reset the oil life monitor, turn the ignition to the "On" position without starting the engine. Use the DIC controls on the steering wheel to navigate to the "Oil Life" menu. Press the "Check" button and hold it until the oil life percentage resets to 100%.

What type of engine oil is recommended for the 2021 GMC Sierra?

The recommended engine oil for the 2021 GMC Sierra is SAE 0W-20 for the 5.3L and 6.2L engines and SAE 5W-30 for the 4.3L engine. Always use oil that meets the GM dexos1® specification.

How can I improve the fuel efficiency of my 2021 GMC Sierra?

To improve fuel efficiency, keep tires properly inflated, reduce excess weight from the vehicle, maintain a steady speed, and perform regular maintenance such as air filter and spark plug replacements.

What is the towing capacity of the 2021 GMC Sierra?

The towing capacity of the 2021 GMC Sierra varies by configuration. The maximum towing capacity is 11,800 pounds for the 5.3L V8 engine with the Max Trailering Package. Refer to your owner's manual for specific configurations.

How do I connect my phone to the GMC Sierra 2021's Bluetooth system?

To connect your phone via Bluetooth, go to the "Settings" menu on the infotainment system, select "Bluetooth," and ensure it's turned on. Then, on your phone, enable Bluetooth and select "GMC Sierra" from the list of available devices. Confirm the pairing code when prompted.

What should I do if my GMC Sierra's check engine light comes on?

If the check engine light comes on, ensure the gas cap is tight as a loose cap can trigger the light. If the light remains on, consider using an OBD-II scanner to diagnose the issue or take the vehicle to a qualified mechanic for evaluation.

How often should I change the air filter on my 2021 GMC Sierra?

It is recommended to inspect the air filter every 15,000 miles and replace it if it appears dirty. Under normal driving conditions, replace the air filter every 30,000 miles.

How can I update the navigation system in my 2021 GMC Sierra?

To update the navigation system, visit the GMC Navigation website and download available updates to a USB drive. Insert the USB drive into the vehicle's USB port and follow the on-screen instructions to install the update.

What are the common causes of battery drain in a 2021 GMC Sierra?

Common causes of battery drain include leaving lights on, faulty alternator, parasitic drain from electronic devices, and old or failing battery. It's important to check these factors if you experience battery issues.

How do I enable the GMC Sierra's trailering assist features?

To enable trailering assist features, access the trailering app on the infotainment system. Configure your trailer profile, and activate features like Trailer Light Test and Trailer Brake Gain Adjustment through the app.