Your 2014 GMC Sierra has a powerful engine with a lot of towing capacity, but you’ve also added on those miles by now. One way to keep your engine at its best is to keep up with oil changes, so you need to know that the oil capacity is 6.0 quarts for the 4.3-liter and 6.0-liter engines, while a 5.3-liter or 6.2-liter engine takes 8.5 quarts.

The 2014 Sierra is top of its class for size and has a powerful V6 or V8 engine to back it up. Even with a motor that tough, you want to minimize wear and tear with oil changes, but make sure you follow GMC’s guidelines when you do.

We have the info you need before you start–we’ll tell you the oil capacity, which oil to use, and even how to change the oil on that supersized truck of yours!

MORE:

Find the best insurance options for your GMC Sierra

Compare insurance quotes from 50+ carriers with Jerry in under 45 seconds

Find Savings!

4.7/5 rating on the App Store | Trusted by 5+ million customers and 7 million cars

4.7/5 app rating | Trusted by 5M+ drivers

2014 GMC Sierra engine oil capacity

Regardless of your engine, you need to know the right oil capacity for your 2014 GMC Sierra.

The 2014 Sierra has four engine options, and they each have their own oil capacity:

4.3-liter V6 engine: 6.0 quarts (5.7 liters)

5.3-liter V8 engine: 8.5 quarts (8.0 liters)

6.0-liter V8 engine: 6.0 quarts (5.7 liters)

6.2-liter V8 engine: 8.5 quarts (8.0 liters)

Oil capacity lets you know how much oil it takes every time you change the oil. If you want to know why each engine includes a reference to liters, that gives you the engine’s displacement–the amount of volume the six or eight cylinders need. Avoid assuming the engine numbers tell you the oil capacity since they are for different things.

What kind of oil does a 2014 GMC Sierra need?

Once you figure out whether you need 6.0 or 8.5 quarts, you have to make sure you’ve got the correct oil type as well.

Your GMC manual recommends ACDelco dexos1 Synthetic Blend for all 2014 Sierras, but which viscosity depends on the engine:

5.3L and 6.2L V8 engines:

SAE 0W-20

4.3L V6 and 6.0L V8 engines:

SAE 5W-30

GMC says you can use SAE 0W-30 for the 4.3L or 6.0L engine in freezing temperatures if it drops below -20°F.

Okay, so what does all that mean? The numbers 0-20 and 5-30 let you know the oil’s thickness (viscosity) based on 0°F to 212°F, while the W tells you which number is for Winter. These oils work well for a wide range of conditions, so you don’t need to worry about the weather changing, while the oil still flows in freezing temperatures.

Synthetic oil means the manufacturer added altered ingredients to control how the oil works and to minimize damage to your engine. You also want to find an oil with the SAE seal since that means the oil uses the Society of Automotive Engineers’ system to measure viscosity. You want to follow GMC’s instructions since they know which oil will keep your engine in great condition.

MORE:

Ultimate FRAM oil filter guide

How often to change oil on a 2014 GMC Sierra

You also want to know when your 2014 GMC Sierra’s oil should be changed.

If using conventional oil, you need to stick to every 3,000 to 5,000 miles. If your truck doesn’t get driven much, you still need to switch out the old oil every six months so the engine stays in good condition.

With the synthetic oil GMC recommends, you can wait for every 7,500 to 10,000 miles, though keep in mind that older vehicles tend to use up oil faster than newer trucks. If you use your truck for a lot of hauling or drive on dusty roads, the oil must be changed more often.

The owner’s manual suggests checking your oil level every time you need to fill your Sierra, though you should look at least once a month. You’ll know the oil is getting too old if you notice the following:

Watch out for oil that is dark or has a coarse texture

The engine can start sounding louder or making strange noises

Your truck doesn’t accelerate as well or the fuel efficiency goes down

There’s a burning or oily smell when driving

GMC’s owner manual warns about not going too long without changing the oil once the warning light pops up on your dashboard. Since the oil helps keep your engine running, you want to take care of it as soon as possible.

MORE:

The most common GMC problems

How to change your oil and oil filter

If you want to try changing the oil but don’t know where to start, let’s cover the steps for a 2014 GMC Sierra. First, you’ll need to get your supplies:

15 mm socket wrench

Drain pan

Filter wrench

Replacement filter

SAE 0W-20 or 5W-30 oil

Disposal gloves and shop towels (recommended)

Once things are ready to go, warm your engine by running your truck for about five minutes. When the engine is at normal operating temperature, shut off the engine, then

open the hood

. Now for the main event:

Unscrew the oil fill cap to help the oil drain

Get under the engine and use the socket wrench to remove the oil drain bolt and washer–just have the drain pan ready to go since you’ll release the oil as you do

Once you get the oil draining, you’ll remove the old filter with the filter wrench

Add a small amount of oil to the filter’s seal before putting in the new filter

When the oil finishes draining, screw the oil drain bolt on using a new washer

Add the new oil to your engine, then put the oil fill cap back in place

Let the new oil spread through the engine by running your truck for half a minute, then double-check that there’s enough

oil using the dipstick

. Check for leaks, and make sure the oil light turns off once everything is good.

Okay, almost there–now to deal with the used oil. Don’t just dump the oil wherever or in the trash since it’s a safety issue. Instead, add it to a sealed container, like those oil bottles you just emptied, and take it to a safe disposal site, like your

recycling center or a car parts store

And now your 2014 GMC Sierra can get back out on the road! You want to

keep up with regular maintenance

, especially for an older vehicle. It will keep your truck going strong, and it will perform better, so it’s an overall win.

MORE:

How to check and decode a GMC VIN

"I love how easy it was for me, as someone who has an older beat-up truck, to get insurance without going through a lot of trouble. I would recommend anyone try
Jerry
, since it’s free!” —Melissa I.

Jerry sends free alerts to keep your car up-to-date so you can avoid costly repairs

* checking your rate won’t affect your credit score

Get ahead of my car maintenance

* checking your rate won’t affect your credit score

Estimate your repair costs for free with GarageGuard™

Simplify your car maintenance with Jerry.

Try GarageGuard™