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post #31 of 40 (permalink) Old 12-02-2014, 06:09 PM
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Re: Excessive oil consumption on the 2010 2.4L

DESPITE HAVING TO INSTALL A NEW ENGINE, I AM SATISFIED WITH HOW GM HANDLED THIS ISSUE
My wife complained a week ago that her 2010 GMC Terrain (70,000 miles) was very noisy, sounded "like a diesel". I thought maybe it was a batch of bad gas, the 10% ethanol taking it's toll after a couple years, or perhaps the recent cold spell (it got down into low teens in mid Nov). Thankfully she wasn't driving it Thanksgiving week since she flew home to see her folks, so I scheduled it into the dealer right before the holiday. They had asked if I had any warning lights or messages -- NO. I also had recently received the "Excessive Oil Consumption" letter from GM. Wednesday morning, as soon as the service writer heard the engine idle, he said it sounded like something having to do with the timing chain. They told me later that day it was 2 quarts low on oil & only a couple thousand miles since last oil change, so it was definitely losing oil (but I saw no evidence of this on my garage floor, nor had it ever had high oil consumption as far as I could tell). Also told me they suspected a problem w/timing chain and it would be a serious repair, up to possibly including a new engine (at zero cost, no deductible). Got a call on Saturday morning to advise that the engine swap was necessary and had been completed on Friday. Turns out the timing chain guide had broken apart and bits & pieces of it were circulating through the engine (service notes show serious scoring inside the cylinder). Would not have gone much further without some breakdown (timing chain, oil loss, etc.) The only charge I had was for the oil change which apparently was done on the new engine (I would assume they ship crate engines dry, not sure why GM wouldn't pay for the oil, but I was happy to pay only $26 for a new engine!).
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post #32 of 40 (permalink) Old 12-02-2014, 06:13 PM
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Re: Excessive oil consumption on the 2010 2.4L

HAS ANYONE ELSE HAD A NEW 2.4L ENGINE INSTALLED? Any issues, concerns, or watch-outs after an engine swap? Do we know for certain that GM has fixed the timing chain guide / tensioner / etc. issues that caused all these problems in the first place? Just curious how others see this issue. Do you have any concerns with keeping your Terrain/Equinox long term? Are there other reliability issues we need to watch out for?
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post #33 of 40 (permalink) Old 12-09-2014, 01:41 PM
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Re: Excessive oil consumption on the 2010 2.4L

My wife had a new engine put in her 2011 Equinox in Early 2013. Approx 20k to 24k miles later it is back burning oil and the dealer has put it on the oil consumption test again.
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post #34 of 40 (permalink) Old 12-15-2014, 10:10 PM
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Re: Excessive oil consumption on the 2010 2.4L

Just completed the oil consumption test for my 2010 Equinox. 1 litre oil used in 2300km. GM spec is .946 litre for 3200km. I am in the excessive range. My previous unofficial personal results were worse than this. I averaged 1litre/1600km avg. I am quite sure the oil was over filled at the beginning of this test. It was above the top recommended level after I left the dealer but in the end the engine still used more than the spec from GM.
Brought results to dealer and oil was topped up (no charge for visit or added oil), result recorded and the test continues until oil is low again. They want an average usage over 2 intervals of adding oil.

2010 Equinox LT 2.4L 4cyl
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post #35 of 40 (permalink) Old 12-16-2014, 10:05 AM
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Re: Excessive oil consumption on the 2010 2.4L

Quote:
Originally Posted by ColtsChiefsTitans
DESPITE HAVING TO INSTALL A NEW ENGINE, I AM SATISFIED WITH HOW GM HANDLED THIS ISSUE
My wife complained a week ago that her 2010 GMC Terrain (70,000 miles) was very noisy, sounded "like a diesel". I thought maybe it was a batch of bad gas, the 10% ethanol taking it's toll after a couple years, or perhaps the recent cold spell (it got down into low teens in mid Nov). Thankfully she wasn't driving it Thanksgiving week since she flew home to see her folks, so I scheduled it into the dealer right before the holiday. They had asked if I had any warning lights or messages -- NO. I also had recently received the "Excessive Oil Consumption" letter from GM. Wednesday morning, as soon as the service writer heard the engine idle, he said it sounded like something having to do with the timing chain. They told me later that day it was 2 quarts low on oil & only a couple thousand miles since last oil change, so it was definitely losing oil (but I saw no evidence of this on my garage floor, nor had it ever had high oil consumption as far as I could tell). Also told me they suspected a problem w/timing chain and it would be a serious repair, up to possibly including a new engine (at zero cost, no deductible). Got a call on Saturday morning to advise that the engine swap was necessary and had been completed on Friday. Turns out the timing chain guide had broken apart and bits & pieces of it were circulating through the engine (service notes show serious scoring inside the cylinder). Would not have gone much further without some breakdown (timing chain, oil loss, etc.) The only charge I had was for the oil change which apparently was done on the new engine (I would assume they ship crate engines dry, not sure why GM wouldn't pay for the oil, but I was happy to pay only $26 for a new engine!).
Warrany coverage includes any fluids that are required due to the failure of a covered component (such as engine coolant when a leaking water pump is replaced). I can't believe the dealer charged you $26 for engine oil. New engines are shipped dry - without oil.

But - if you are happy- that is all that matters.

PS - Did the dealer charge you for the oil filter?

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post #36 of 40 (permalink) Old 12-19-2014, 12:28 PM
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Re: Excessive oil consumption on the 2010 2.4L

Following up...
Just got my 2010 2.4L Terrain back today.
GMC put a new (well, remanufactured) engine in it. No cost to me.
Service Report indicated "Crosshatch marks worn on sections of cylinders indicating out of round bores. Exhaust manifold cracked".
I knew that the excessive oil consumption was linked to scoring (zebra stripes) in the cylinders. However, I was a bit surprised that the exhaust manifold was cracked.
Does anyone know if those two conditions are commonly linked?
What might have caused the exhaust manifold to crack? Could it have been back pressure from the catalytic converter? If so, does this suggest that the oil combustion may have fouled the catalytic converter? Or did the exhaust manifold crack simply because of excess heat, or something else? Any speculation?
Anyhow, I think I'm happy (caveat: I've only driven 8 miles with my 'new' engine thusfar).
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post #37 of 40 (permalink) Old 12-19-2014, 07:36 PM
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Re: Excessive oil consumption on the 2010 2.4L

Mangeog.. your the 4th or 5th reported case now of a cracked manifold. I believe it is one of two issues.. one, the type of cast metal it is made out of.. meaning if it was made overseas.. they have very bad structures of the material. Two being in the design.. the placement of the previous cracks shown were in or at what seemed to be a seem of sorts. Would have loved to seen a photo of your manifold to compare to the others.

2011 SLE Terrain FWD (2.4) Mocha Steel/Black interior
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post #38 of 40 (permalink) Old 02-21-2015, 10:04 PM
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Re: Excessive oil consumption on the 2010 2.4L

Went through the oil consumption test and at the end of it ( 3 visits to the dealer over a 5000 km period), my 2010 Equinox was using 2.5 times more oil than the spec. The dealer replaced the pistons, piston rings, high pressure fuel pump, timing chain, balance shaft chain and tensioner this week. They had my vehicle for 2 days and paid for a courtesy rental. No questions asked. They must have washed the engine as it looks brand new. Hopefully the problem is now resolved. I am pleased that GM acknowledged that they have an issue with the 4 cyl engines.

2010 Equinox LT 2.4L 4cyl
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post #39 of 40 (permalink) Old 02-21-2015, 10:21 PM
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Re: Excessive oil consumption on the 2010 2.4L

Quote:
Originally Posted by littleha
Went through the oil consumption test and at the end of it ( 3 visits to the dealer over a 5000 km period), my 2010 Equinox was using 2.5 times more oil than the spec. The dealer replaced the pistons, piston rings, high pressure fuel pump, timing chain, balance shaft chain and tensioner this week. They had my vehicle for 2 days and paid for a courtesy rental. No questions asked. They must have washed the engine as it looks brand new. Hopefully the problem is now resolved. I am pleased that GM acknowledged that they have an issue with the 4 cyl engines.
It wasn't just GM and it is not just 4 cylinder engines. It is the Direct Injection technology most car makers are still struggling with:

* * * *
Here is a link to an article that barely scratches the surface: * * * http://www.autoguide.com/auto-news/2...injection.html


In GM's defense, these newly developed Direct Injection gasoline engines have technology that has been troublesome to adapt for all the car makers. Car makers have adopted this technology in response to increased pollution and efficiency demands placed upon them by the government. If you do some searches, you will find that Ford, BMW, MB, Honda, Toyota and others are continuing to have problems, but, like GM, also continue to make improvements and modifications to resolve DI compromises in engine operation and durability. For the most part, all of the major car makers, domestic and foreign, have had the same or similar issues, with failed fuel systems, durability issues, and reoccurring problems. . .. until the past 2 years or so.

What you have happened into by buying a 2010-12 Terrain or Equinox was to get in on the advent and learning curve of this new Direct Injection (DI) engine technology. Even accelerated wear and reliability testing by all the car makers did not catch all the issues that have arisen. So in closing, you would have likely had issues no matter what vehicle you purchased with a DI engine in the 2009 to 2013 time frame. And some car makers would not have covered what GM already has done for your vehicle repairs.

Well, I hope this helped a little with some perspective. Believe me, it is not agreeable to me either, to have to do so much research and consideration when buying a car. But these are the times we find ourselves in. Also today, it is imperative to learn and follow proper operation and maintenance items when owning a car. They are not as forgiving as what we were used to 10 or more years ago. Oil levels must be checked at every fuel fill up if not at least twice a month.
Well, I hope this gave a bit more insight. If not, best wishes down the road.


2019 GMC Acadia SLT-1 3.6L LGX V6 - Build Date: 4-11-2019 - Bought 6-22-2019

SOLD - - 2015 Equinox LTZ 3.6L FWD Champagne Silver Metallic *Build Date 1-08-2015 *

SOLD with *38,865 miles 8-15-2019.
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post #40 of 40 (permalink) Old 05-10-2015, 05:30 PM
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Re: Excessive oil consumption on the 2010 2.4L

As I mentioned in an earlier post on this page GM replaced all the parts that are in the TSB for oil consumption and I am happy to say that my first oil change is coming due since the parts change and my engine has only used .25 litre of oil in 4400km plus the oil no longer smells of gasoline. Much better than the 3.6 litres used before parts changed.
Dealership was great and they never even charged me for topping up the oil or labour during the oil test.

2010 Equinox LT 2.4L 4cyl
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