2022 GMC Sierra 1500 Gas Tank Size

The 2022 GMC Sierra has a gas tank size of either 24 gallons or 28 gallons, depending on the configuration.
Written by Brian Hicks
Reviewed by Georgina Grant
Your 2022 GMC Sierra may have a 24-gallon gas tank or a 28-gallon gas tank depending on its configuration. 
Because of the hauling and towing needs associated with pickup trucks, they tend to come with larger-than-normal gas tanks, and the GMC Sierra 1500 is no exception. Unfortunately, this means that truck owners tend to pay more at the pump, making it particularly important that you save on your other car expenses, like your
GMC Sierra insurance cost
To help you estimate how much you will spend on gas, check out this guide from
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How big is the gas tank on a 2022 GMC Sierra 1500?

Your 2022 GMC Sierra 1500’s gas tank size depends on its configuration. Between eight trim levels, three cab configurations, three bed lengths, and four engines, there are plenty of options! 
Most of these configurations include a 24-gallon tank, but the Sierra 1500 models with a long truck bed hold a 28-gallon tank.

How to check your 2022 GMC Sierra’s gas tank size

There are a few different ways to confirm the gas tank size of your specific trim level and configuration.

Check your owner’s manual

You should be able to find information about your model’s fuel tank capacity under the “Capacities and Specifications” section listed in the “Technical Data” chapter of your owner’s manual. If it’s not there, you might have to browse through the manual to find more information about the gas tank.

Measure the gas tank

For a more hands-on approach, measure the width, length, and height of your tank in inches. Multiply those three figures together, then divide by 231 to get the capacity in gallons.

Drive till empty, then fill it up

As a last resort, you can wait to fill up your tank until the fuel gage hits “Empty,” then take note of how much gas you’ve purchased. Obviously, this is a risky move, so don’t plan on driving too long on empty!

The fuel economy of the 2022 GMC Sierra 1500

The fuel economy for the 2022 GMC Sierra 1500 falls into a wide range, depending on the engine size and type, as well as whether it uses rear-wheel drive (RWD) or four-wheel drive (4WD):
Estimated gas mileage (city)
Estimated gas mileage (highway)
Turbocharged 2.7-liter four-cylinder engine
19 mpg
22 mpg
Turbocharged 2.7-liter four-cylinder engine
17 mpg
20 mpg
5.3-liter V8 engine
16 mpg
21 mpg
5.3-liter V8 engine
15 to 16 mpg
18 to 20 mpg
Turbodiesel 3.0-liter inline-six engine
23 mpg
30 mpg
Turbodiesel 3.0-liter inline-six engine
20 to 22 mpg
23 to 26 mpg
6.2-liter V8 engine
13 to 14 mpg
17 to 19 mpg
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How to save on fuel costs in the 2022 GMC Sierra 1500

Gas prices can fluctuate like crazy. One constant will be the large size of your gas tank if you’re driving a pickup truck. If the fuel economy numbers of the 2022 GMC Sierra 1500 worry you, here are a few tips on how you can save on your fuel costs.
First, be sure to maintain your car. Keeping everything in tip-top shape can help to ensure that your truck is running at its best at all times. Issues with your engine that go unchecked can lead to a dip in fuel economy.
Second, be a careful driver. Harsh acceleration can have an adverse effect on your truck’s fuel economy. Easing off the gas a little bit can lead to some extra money in your pocket.
Finally, avoid idling. A truck running with nowhere to go just uses up gas. When warming up your truck on a chilly day, it can be better to cut down on the idling time and instead drive the truck easily to help it warm up.

How to save big on insuring your 2022 GMC Sierra 1500

Owning a pickup truck can be expensive, from the initial purchase price to the regular maintenance costs. But one thing you won’t have to worry about is overpaying for your
GMC insurance cost
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