[Realist]

I thought a majority of the problems were narrowed down to 2017 and early 2018’s. I would buy used if mint but probably go warranty. I sold my car last year with 12k mostly highway miles. Just needed tires but was in excellent shape.

[Z OH 6]

Originally Posted by Xelor

Run from a 2017-2019

Why 2019?

[1badtie]

At this point this is fear mongering lol come on

[arpad_m]

Originally Posted by 1badtie

At this point this is fear mongering lol come on

Welcome to 21st century internet A couple of part failures, say, 0.1%? Run from it!!! The more extreme, the better...

[Fred 6528]

If it’s absolutely the car you want I would buy it and replace the pump. Just factor in the cost and ride with no worries.

[Spdkills464XC]

Thanks for all of the replies and information. I have thought that if I went the 18-19 route just get the Katech unit and be done with it. Still looking at potentially buying new as well if I can find a dealer willing to cooperate.

I do appreciate the help and knowledge hopefully be in one by beginning of summer. Key word there is “hope” lol.

[Z OH 6]

Originally Posted by Spdkills464XC

Thanks for all of the replies and information. I have thought that if I went the 18-19 route just get the Katech unit and be done with it. Still looking at potentially buying new as well if I can find a dealer willing to cooperate.

I do appreciate the help and knowledge hopefully be in one by beginning of summer. Key word there is “hope” lol.

No oil pump issue with the 2019+ models.

[Z OH 6]

Originally Posted by arpad_m

Welcome to 21st century internet A couple of part failures, say, 0.1%? Run from it!!! The more extreme, the better...

Yea, but its a bit more than that. It was serious enough that GM released a tech bulletin about it. They didn't issue a recall because it doesn't affect safety. There is no question that the 2017 and 2018 models suffer from this issue, its not if but when.

[BlaqWhole]

Originally Posted by Z OH 6

Yea, but its a bit more than that. It was serious enough that GM released a tech bulletin about it. They didn't issue a recall because it doesn't affect safety. There is no question that the 2017 and 2018 models suffer from this issue, its not if but when.

I wouldn't say "when" because if it was that drastic then GM would have had to do a recall. My oil pump has been running strong since I got my car brand new back in April of 2017. I have about 32K miles on it. But then again I followed proper break-in procedure and I don't beat on my car. There are plenty of 17s and 18s out there that have likewise not had this issue.

Although we may never know the full answer, I wonder how many of these with issues were owned by people who really beat on their car and figured they were just gonna trade it in or ditch it at some point so it didn't matter to them. I mean, my goal from the start was always to keep mine forever. So I treated it as such. No burnouts no hanging off the rev limiter no 4K RPM drops at the track no constant WOT runs etc. I wonder how much of this has a part. Because not for nothing, but when the 17s and 18s came out, there sure were a lot of videos on FB and YT and IG of people buying these cars brand new and roasting the tires right there on the dealership lot or at home with like 17 miles on the clock. It's diminished a lot since then. All of these may be factors. Because I and several others I know who have treated our ZL1s like we planned to keep them never had these issues.

[BlaqWhole]

OP I wouldn't get one of them simply because you don't know how many people beat on them. People seem to lose all common sense when they get behind the wheel of these types of cars and they start beating the snot out of them. Personally I would buy a new one or maybe a 1-2 year old version with low miles and a full warranty still intact. I'd only buy a 17 or 18 if I had plans to do some extensive mods...since you can get one of those for cheaper and you'll be blowing the warranty anyway.

[Camaro fanboy]

Originally Posted by BlaqWhole

I wouldn't say "when" because if it was that drastic then GM would have had to do a recall. My oil pump has been running strong since I got my car brand new back in April of 2017. I have about 32K miles on it. But then again I followed proper break-in procedure and I don't beat on my car. There are plenty of 17s and 18s out there that have likewise not had this issue.

Although we may never know the full answer, I wonder how many of these with issues were owned by people who really beat on their car and figured they were just gonna trade it in or ditch it at some point so it didn't matter to them. I mean, my goal from the start was always to keep mine forever. So I treated it as such. No burnouts no hanging off the rev limiter no 4K RPM drops at the track no constant WOT runs etc. I wonder how much of this has a part. Because not for nothing, but when the 17s and 18s came out, there sure were a lot of videos on FB and YT and IG of people buying these cars brand new and roasting the tires right there on the dealership lot or at home with like 17 miles on the clock. It's diminished a lot since then. All of these may be factors. Because I and several others I know who have treated our ZL1s like we planned to keep them never had these issues.

very good post. also you only ever hear about the failures. never about how great the car has been.

[LT4Greg]

I like Blaq Whole don’t beat on my 2017 with over 22,000 miles and let the engine warm up throughly before romping on it. I also use the recommended 5W30 oil when changing it. My drivetrain warranty is done so keeping my fingers crossed that I don’t have any issue with the pump or engine.

[Camaro fanboy]

if you read every issue any car you were thinking of buying had then you'de never buy one.
look on the mustang forum ffs .
yet they still buy the crap.

[Z OH 6]

Originally Posted by BlaqWhole

I wouldn't say "when" because if it was that drastic then GM would have had to do a recall. My oil pump has been running strong since I got my car brand new back in April of 2017. I have about 32K miles on it. But then again I followed proper break-in procedure and I don't beat on my car. There are plenty of 17s and 18s out there that have likewise not had this issue.

Although we may never know the full answer, I wonder how many of these with issues were owned by people who really beat on their car and figured they were just gonna trade it in or ditch it at some point so it didn't matter to them. I mean, my goal from the start was always to keep mine forever. So I treated it as such. No burnouts no hanging off the rev limiter no 4K RPM drops at the track no constant WOT runs etc. I wonder how much of this has a part. Because not for nothing, but when the 17s and 18s came out, there sure were a lot of videos on FB and YT and IG of people buying these cars brand new and roasting the tires right there on the dealership lot or at home with like 17 miles on the clock. It's diminished a lot since then. All of these may be factors. Because I and several others I know who have treated our ZL1s like we planned to keep them never had these issues.

Hard to say, the root cause seems to be the timing chain guide/tensioner, not the oil pump itself but the oil pump usually ends up failing due to a hole worn through it.