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So my wife and I recently inherited a 2014 Chevy Cruze diesel from my mother in law because my father in law passed away. I know absolutely nothing about diesels…any help would be great just as far as normal maintenance to keep in mind. I have already had to replace the DEF fluid tank heater. Now just few days ago I got another check engine light and the code I read was P2598…I can’t really find much as to what it could be. Even worse, I really can’t find anyone in my area here who knows this care and is willing to work on it. Any help would be appreciated. Thanks!
 

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2014 Cruze TD
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You can search that P code in the search box and find some hits in this forum.

Regarding the diesel. There's a few things that you should keep in mind that is different than a gaser.
  1. Just buy regular diesel you find at speedway, exxon, shell, etc. Don't get smart and try to buy other blends from truck stops or buy additives. Just buy regular fuel. Exxon/Mobile has great diesel.
  2. Make sure you do oil changes with Dexos 2 (not Dexos Gen 2) oil or ACEA C3 oil. You can find it at WalMart (Pennzoil) or online
  3. These cars like highway driving. Personally, if you are not going on the highway a few times a week I wouldn't own this car. They need to be at high constant RPM to regenerate. They can regenerate during normal stop and start driving but it's best to highway drive
  4. Your DEF tank readout will stay at 100% until it gets to 36%. Don't worry this is normal
  5. This car needs a timing belt every 100k miles. If you don't know if it was done already, the belt breaking will destroy your engine so have the belt changed
 

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2015 CTD
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A thorough search of Gen1 diesel general discussion and gen1 diesel technical discussion will get you dang near 100% of any questions answered.

And if not there is a ton of people here to help.

Step one to owning this car is to get Gretio on the app stores. It is basically GM's tech2 but way affordable. Takes a bit to understand at first but we are fortunate to have Snipsey who is the creator of it and he will respond very quickly to any issues you have using it. I think I have grasped maybe 30% of its capabilities.

They are truly a fun and very unique car to own.
 

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I have a Gen 2 diesel, but one of the most fun things is when people think they're trying to save you from putting the wrong kind of fuel in your tank! I had a guy in a GMC Sierra HD pulling a boat literally jump out of his truck and come jogging over to me to stop me from putting the wrong kind of fuel in my car. I told him it was actually a diesel, but he clearly didn't believe me as he kept coming over to my car, and once he saw the green fuel cap, shrugged and said, "I didn't know they made these in a diesel, wow." There have been numerous other occasions where people comment, but none as funny as that day. (I also get the same reactions when filling up my 2019 Equinox diesel)
As for the fuel, just make sure that you're purchasing fuel from a station with a higher turnover rate, otherwise, you might risk getting water in your fuel, which is not good for a diesel, even though a gasser will just spill it out the tailpipe, which you've probably seen multiple times. If you're in a colder climate for winters, I DO recommend an additive to keep the fuel from gelling up. Hot Shots "Everyday Diesel Treatment" saved my when I purchased my Equinox and was driving it from Idaho to Colorado during 20 below weather. I fueled up at a big name station thinking I'd be okay, but the next morning when I went to fire up the 'Nox, it would not stay running longer than about 10 seconds. After 20 minutes of trying, I walked to a nearby auto parts store (again, in 20 below weather) and purchased the Hot Shots EDT. I put in double the amount directed, then waited about 5 minutes. When I tried to fire it up again, low and behold, it started and stayed running for the remainder of my trip home. Might have been the previous 20 minutes of trying, but I think the EDT had a part in the result.
 
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