Carbon build-up. Collapsing lifters. Failing mounts. These are just some of the 2017 GMC 6.2 engine problems that you might face if you have a 2017 GMC vehicle. Although the engines found in 2017 GMC engines have earned a reputation for being pretty reliable, you’re still going to need to keep your eyes peeled for potential problems with them.
Fortunately, 2017 GMC vehicles have only been out on the road for a short time now. As a result, there aren’t too many 2017 GMC 6.2 engine problems to report at the moment. But even with that in mind, there are some issues that have started to pop up, and they could affect your ability to keep your GMC active if you’re not careful.
Learn a little more about the GMC 6.2-liter engine found in many 2017 GMC vehicles below. Then, continue reading to discover more about the 2017 GMC 6.2 engine problems that should be on your radar from here on out.
A Brief History of the GMC 6.2-Liter Engine
Before we get into talking about the 2017 GMC 6.2 engine problems that you might face at some point in time, we want to kick things off by giving you a quick rundown of the 6.2-liter engine found in many 2017 GMCs. It’ll help you find out more about the engine that is tucked underneath your GMC vehicle’s hood.
The GMC 6.2-liter engine is actually better known as the Chevy EcoTec3 6.2L engine. It was first introduced way back in 2014 as the successor to the Gen IV Vortec line of engines that Chevrolet and GMC were using back then. The engine is a small-block V8, and over time, it has been placed into a lot of different cars, trucks, and SUVs in the Chevy and GMC lineups.
Chevy and GMC came up with the entire EcoTec engine line in order to start putting engines into their vehicles that were more fuel-efficient and eco-friendly than their past engines. They succeeded in doing that to a large degree, but the new engine was not without its problems. It’s what eventually led to many of the 2017 GMC 6.2 engine problems that we’re going to discuss today.
The Vehicles With GMC 6.2-Liter Engines
There are actually half a dozen different variations of the Chevy EcoTec3 6.2L engine that have been created at this point. There is everything from the LT1 variation that is found in Chevy Camaro SS cars to the L8T variations that is found in Chevy Silverado HD trucks. But for our purposes, we’re going to focus on the Chevy EcoTec3 6.2L engines that have been used in GMC vehicles.
Some of the 2017 GMC trucks and SUVs with this particular engine in them are the:
- 2017 GMC Yukon and Yukon XL
- 2017 GMC Suburban
- 2017 GMC Savana
These are the vehicles that are going to be prone to 2017 GMC 6.2 engine problems. If you happen to have one of these vehicles, you’re going to need to have these issues in the back of your mind at all times.
5 Common 2017 GMC 6.2 Engine Problems
The great news for anyone who owns one of the GMC vehicles that we just mentioned is that there aren’t really that many 2017 GMC 6.2 engine problems that we need to bring up. Thus far, the 6.2-liter engines found in most GMCs released in recent years have held up just fine.
But that’s not to say that there aren’t going to be any 2017 GMC 6.2 engine problems that you’ll need to worry about. There are a handful of them that you might need to address in the not-too-distant future. We’re going to break down several of the most common 2017 GMC 6.2 engine problems right now.
1. Carbon Build-Up
While many of the Gen IV Vortec engines that Chevy and GMC used prior to 2014 utilized port fuel injection systems, the newer EcoTec 3 engines all rely on direct fuel injection systems. There are some advantages to using this type of injection system, but there is also one big disadvantage that can lead to 2017 GMC 6.2 engine problems.
With port fuel injection systems, fuel is delivered to an engine through the use of intake ports. Fuel that is sent through these ports is highly pressurized, so that allows it to be used as a natural cleaner. There is no gunk that is able to build up in these ports at any time.
The same cannot always be said for the intake ports in a direct fuel injection system. This kind of system sends fuel directly into the cylinders in an engine, effectively bypassing the intake ports. This can be problematic since carbon can build up in these ports and stay there since there isn’t any highly pressurized fuel to take care of it. Most engines with direct fuel injection systems have this same problem.
If you don’t do something about the carbon build-up in your GMC’s intake ports, it can starve your engine of the oxygen that it needs. That makes this one of the most serious 2017 GMC 6.2 engine problems. You’re going to need to investigate it if you notice that your GMC:
- Idles rough
- Doesn’t deliver the performance you would expect from it
- Experiences engine misfires
There isn’t a surefire way to stop this problem from plaguing your GMC’s engine. It’s one of the 2017 GMC 6.2 engine problems that you’ll have to deal with accordingly when the time comes. You shouldn’t have to be too concerned about it until your GMC reaches the 80,000-mile mark or so, but it’s not a bad idea to scan your vehicle for signs of carbon build-up throughout the course of you owning it.
2. Lifter Collapses
The GMC vehicles that have Chevy EcoTec3 6.2L engines in them have what is called active fuel management, or AFM, installed. This is a fuel efficiency system that is set up to cut down on how much fuel you’re using when you’re behind the wheel of your GMC. It works by turning off some of the cylinders in your engine when you don’t need them.
AFM is, in theory, a smart idea, but it doesn’t always work in the way that it’s supposed to. This can inevitably lead to 2017 GMC 6.2 engine problems. Your AFM is going to deactivate some of the cylinders in your engine through the use of lifters, and these lifters have been known to go bad in a relatively short period of time.
In addition to this being bad news for the lifters in your engine, it can also be bad news for the push rods in it. It’s not uncommon for the push rods in some 2017 GMC vehicles to bend, which will cause them to stop working properly. Between the bad lifters and the bad push rods, it can cause a catastrophe. The cylinders in your engine won’t be able to open and close like they should, and it can affect your vehicle’s performance in a big way.
If you’d like, you’re welcome to disable the AFM from your GMC. It’s going to limit the effectiveness of your Chevy EcoTec3 6.2L engine, but it could help you steer clear of the 2017 GMC 6.2 engine problems we just talked about.
3. Bad Engine Mounts
Is the big old engine in your GMC rattling and vibrating way more than you think it should when you’re driving around in it? Bad engine mounts could be to blame! This is yet another one of the common 2017 GMC 6.2 engine problems.
As you can probably imagine, the engines in 2017 GMCs are almost always under a lot of pressure because of the size of the vehicles that they’re in. This can eventually take a toll on the engine mounts in 2017 GMCs and cause them to fail. It’s something you take care of sooner rather than later to avoid further problems down the line.
4. Faulty Fuel Injectors and Fuel Pumps
As we touched on a few moments ago, the Chevy EcoTec3 6.2L engine uses a direct fuel injection system to get fuel to your engine. And while there are benefits to using this type of system, it can also lead to 2017 GMC 6.2 engine problems with your fuel injectors and your fuel pumps.
The fuel that passes through your fuel injectors on its way to your engine cylinders is going to be highly pressurized. That can put a strain on your fuel injectors and result in them failing on you. It can also put a strain on your fuel pump, and when that stops working, it’s not going to be able to push enough fuel through your fuel injectors. That’s another big problem to have.
You might have bad fuel injectors or a bad fuel pump if you spot any of these signs:
- Poor engine performance
- Sputtering acceleration
- Engine misfires
- Strange noises emanating from the engine
These issues might not seem like the worst 2017 GMC 6.2 engine problems at first. But they can quickly do damage to your engine if you drive around without doing anything about them.
5. Failing Intake Manifold Gaskets
One of the final 2017 GMC 6.2 engine problems that you’ll have to look out for is failing intake manifold gaskets. They can go bad on you, and when they do, they can cause air leaks or vacuum leaks to form within your intake system.
You’ll know that you have failing intake manifold gaskets if you notice:
- Your car idling rough
- Your acceleration feeling sluggish
- Your engine delivering reduced performance
Just like with all of the other 2017 GMC 6.2 engine problems listed here, you should get to the bottom of this issue right away to prevent it from getting worse.
The Cost to Repair 2017 GMC 6.2 Engine Problems
Are you currently dealing with any of the common 2017 GMC 6.2 engine problems that we just discussed in depth? Then you might be wondering what it’s going to cost to repair them. The answer is…it all depends on the specific repair you need done!
If, for example, you need to replace the engine mounts in a 2017 GMC vehicle, you’re going to be looking at paying somewhere between $400 and $500 for it in most cases. But if you’re looking to replace fuel injectors, that could cost you somewhere between $650 and $800. You’ll need to speak with a mechanic about your specific needs to get an estimate for repairing 2017 GMC 6.2 engine problems.
Is the GMC 6.2-Liter Engine Reliable?
After hearing about all the different 2017 GMC 6.2 engine problems that are out there, you might be under the impression that the Chevy EcoTec3 6.2L engine isn’t reliable at all. But that isn’t necessarily the case.
The lifter issues have turned into a big concern for those with 2017 GMC vehicles. Even in some vehicles that don’t have many miles on them, the lifters have started to fail. The AFM is something that is a concern for GMC owners as a whole.
But by and large, the Chevy EcoTec3 6.2L engine has proven to be reliable for those who have chosen to take good care of it. In spite of the reported 2017 GMC 6.2 engine problems, the belief is still that the engine should be able to last for up to 250,000 miles when maintained properly. It’s a good engine overall that should stand the test of time.
Getting Rid of a Vehicle With 2017 GMC 6.2 Engine Problems
If you’ve been affected by any of the 2017 GMC 6.2 engine problems, you should be able to get them fixed up in a hurry. But if you don’t want to go this route and you would prefer to get rid of your GMC instead, you should know that that’s an option, too.
Cash Cars Buyer can help you unload your car and make sure that you get top dollar for it. Since the vehicles that are experiencing 2017 GMC 6.2 engine problems right now are still on the newer side, you might be able to get a pretty penny for yours.
Contact us now to find out how you can sell your GMC and get rid of your 2017 GMC 6.2 engine problems for good!