[Daysew]

This morning I punched it hard to get on the freeway it took off fast like usual then it bogged down and RPMs surged up to 4000. Engine light can on blinking and my traction light came on. I aborted takeoff and pulled over on the shoulder. The idle was really rough. I powered off and back on and the light was solid idle still bad. My cheap scanner says P0300 P0301 P0171. I put it in D and accelerated and the light started blinking again. I parked and had it towed to the dealer. Dealer gave me a shuttle since they can't look at it until tomorrow. TELL ME THIS ISN'T A PISTON!

2018 Premier 2.0T 117000 miles

Sounds like misfiring

 

[repairman54]

GM parts have a 2 yr. warranty including labor if dealer installs. I think engine is covered longer, not sure but it's better than Joe Schmoes garage warranty.

 

[555hp]

Based on the values I see, the decision to move forward with the replacement is the best move. $5000 is still a lot but it's better than 8. You'll still hold your value and have a new engine. The transmission isn't a concern at all. I've started think of the 9T50 as tank status in these. There were a few solenoid issues early on but the software update largely fixed that. Let us know how it comes out.

Ditto on what @JJA wrote - if that oil was Ultra Platinum stay away. The regular Platinum Full synthetic is the way to go in that line. Just make sure you use dexos1 oil. I've been a 5000 interval guy for years now. I have no evidence that it fully protects your car. All I have is experience with mine rolling along at almost 140,000 miles with no piston issues, no PCV clogs, no leaks, no dry blown up vacuum pump.

After having a 5-7 clutch replaced (and associated parts) on a 2017 Premier with the 9T50, we disagree with your assessment of that marginal trans (based on torque) as tank status.

 

[campb292]

After having a 5-7 clutch replaced (and associated parts) on a 2017 Premier with the 9T50, we disagree with your assessment of that marginal trans (based on torque) as tank status.

Ok, a tank for those who take care of theirs.

 

[555hp]

Ok, a tank for those who take care of theirs.

"No maintainance required for normal driving conditions".

To be fair, we did bump the HP a bit, but the 9T50 is no Aisen 8 spd (2016).

For once I believe Fors was smart (by not picking up this 9 spd).

Hoping you did not jinx yourself.

 

[campb292]

"No maintainance required for normal driving conditions".

To be fair, we did bump the HP a bit, but the 9T50 is no Aisen 8 spd (2016).

For once I believe Fors was smart (by not picking up this 9 spd).

Hoping you did not jinx yourself.

The no maintenance was what I was expecting based on your previous posts. Stretch those oil changes, believe those lifetime fluid claims, find yourself in the shop for repairs. This forum hardly sees any 9-speed issues going on 5 years now. Unit's a tank but unfortunately not all owners take maintenance seriously.

 

[DrivenDaily]

@jeffk
I suggest you do some math and see what you feel like spending on oil changes. Let's say that you spend $50 on an oil change just to make easy math. Now let's say that you drive it another 100,ooo miles.

At an OCI (oil change interval) of "X" miles, you'll rack up "E" events, at a cost of "D" dollars:

• X , E , D
• 6ooo , 17 , 850
• 5ooo , 20 , 1ooo
• 4ooo , 25 , 1250
• 3ooo , 34 , 17oo

Life's a gamble, but machines are very predictable. In 100,ooo miles, would you consider it financially acceptable to pay $150 or even $400 more for OCI's of 5ooo or 4ooo miles, respectively?

When you sit down and count the costs, it becomes a little clearer. How long would it take you to put 100,ooo miles on the car? How much is that OCI going to cost per year? ... per month?

Once you answer those for yourself, you may be in a better position to decide what to do.

But one thing that @campb292 and @repairman54 are famous for on this forum, if nothing else, it's to do frequent oil changes and get more miles for the money you've already spent to have the car sitting in your driveway to start with. I respect the heck outta these guys, and our other members who contribute good advice are worth listening to as well.

I'm sure you'll figure it out and make a great choice! Oh, don't worry about venting. We all do it. You get a pass, okay?

 

[555hp]

The no maintenance was what I was expecting based on your previous posts. Stretch those oil changes, believe those lifetime fluid claims, find yourself in the shop for repairs. This forum hardly sees any 9-speed issues going on 5 years now. Unit's a tank but unfortunately not all owners take maintenance seriously.

I think that's a bit disingenuous to suggest I do not believe in maintainance (nor do I believe there is any value to overchanging oil, but it's your $$$, sadly the dame people neglect their plugs).

Glad to hear that there is not many 9T50 problems with the Malibu. It's not much bigger brother, the 9T65, does not do as well in more tank size SUVs per GM Authority.

https://gmauthority.com/blog/2020/12/gm-initiates-pilot-program-to-replace-9t65-9-speed-transmission/

 

[555hp]

@jeffk
I suggest you do some math and see what you feel like spending on oil changes. Let's say that you spend $50 on an oil change just to make easy math. Now let's say that you drive it another 100,ooo miles.

At an OCI (oil change interval) of "X" miles, you'll rack up "E" events, at a cost of "D" dollars:

• X , E , D
• 6ooo , 17 , 850
• 5ooo , 20 , 1ooo
• 4ooo , 25 , 1250
• 3ooo , 34 , 17oo

Life's a gamble, but machines are very predictable. In 100,ooo miles, would you consider it financially acceptable to pay $150 or even $400 more for OCI's of 5ooo or 4ooo miles, respectively?

When you sit down and count the costs, it becomes a little clearer. How long would it take you to put 100,ooo miles on the car? How much is that OCI going to cost per year? ... per month?

Once you answer those for yourself, you may be in a better position to decide what to do.

But one thing that @campb292 and @repairman54 are famous for on this forum, if nothing else, it's to do frequent oil changes and get more miles for the money you've already spent to have the car sitting in your driveway to start with. I respect the heck outta these guys, and our other members who contribute good advice are worth listening to as well.

I'm sure you'll figure it out and make a great choice! Oh, don't worry about venting. We all do it. You get a pass, okay?

Another opinion about oil changes, from Edmunds (and their reference to Blackstone Labs for analysis is the best way to know how often it should be changed, unless you trust that the mfg already did that for you).

Stop Changing Your Oil! | Edmunds.com

Outdated oil change advice is foisted on car owners to keep them coming back.

www.edmunds.com

 

[campb292]

Another opinion about oil changes, from Edmunds (and their reference to Blackstone Labs for analysis is the best way to know how often it should be changed, unless you trust that the mfg already did that for you).

Stop Changing Your Oil! | Edmunds.com

Outdated oil change advice is foisted on car owners to keep them coming back.

www.edmunds.com

The irony: it's an online article complaining about "outdated" and the article is from 2013 before any of these cars even existed. People have a right to service their car however they want. Readers have the right to read and pick which advice to follow. Readers also have a right to respond when poor choices lead to poor outcomes. Here readers can take the reasonable, intelligent, experienced advice of a certified tech and a few others on an online forum, or the advice of someone posting online websites pushing "Stop Changing Your Oil!" Of course, this skip the maintenance crowd also has clutches grinding out.

 

[DrivenDaily]

Guys, gals, and @555hp,
I'm done with counter-productive meatheads who throw out useless garbage.

@555hp
Your transmission lost a clutch, more likely as a result of YOUR poor or non-existent servicing, and possibly due to how you drive. There is also the matter of 'bumping the HP a little'. Could that have contributed to it?

Then, as @campb292 points out, that Edmunds article was from April of 2013, about the time when small engines with turbochargers began to appear. The issues with LSPI were only just beginning to become known, and since then the manufacturers and oil refiners have made a number of changes to motor oil to help owners prevent it, and ostensibly to keep manufacturers from replacing so many engines under warranty. (Notice the added bold emphasis on your comments below.)

After having a 5-7 clutch replaced (and associated parts) on a 2017 Premier with the 9T50, we disagree with your assessment of that marginal trans (based on torque) as tank status.

"No maintainance required for normal driving conditions".

To be fair, we did bump the HP a bit, but the 9T50 is no Aisen 8 spd (2016).
... snip ...

Another opinion about oil changes, from Edmunds (and their reference to Blackstone Labs for analysis is the best way to know how often it should be changed, unless you trust that the mfg already did that for you).
... snip ...

The transmission in my 2011 also came with the idea that it will never have to be serviced for 200,ooo miles because, as an engineer who was a member of the team who developed said right here on CMF, 'they tested it in the lab and found that it would go 200,ooo miles without being serviced.' Wow, so the lab throws road debris at it, has bearing failures that require the axle to be replaced, which allows the trans to loose fluid, and it never permeated any of the seals or leaked due to a defect in a part? They also believed their own hype so much that there is no user-serviceable filter!

I have changed the trans fluid in MY vehicle several times and I will continue to do so. You can go ahead and smugly laugh derisively at me and all the others who actually want their cars to last longer than yours will. While you're at it, remember too that you brought our actions on yourself.

@campb292 and @jeffk
He has been banned. We are not going to endure his stupidity any further.

 

[repairman54]

When it comes to the severe service schedule, just hitting one of the parameters is a qualifier for the schedule.
Stop and go driving is one of them. Live in town or urban, BINGO you're a qualifier.
Regular schedule is the lease car schedule, they rarely go over 36k miles before turning in.
My last 3 Malibu's where fleet cars, wife's job sold them at 75k miles to avoid major repairs. At least I got lucky with them.

 

[jeffk]

I was given an estimate of late next week. They get the new engine next tuesday.

@DrivenDaily @campb292 @JJA @repairman54 Thank you for the advice and help. I had been changing oil every 5000 miles and it slipped to 7500 the last couple. I am not sure what oil I used. I intend to buy the regular platinum but I worry I picked up the ultra platinum by mistake. I don't have the bottle now. You guys have always been so helpful and thanks again for putting up with my previous outburst. Is there a guide on here that has all the maintenance the community recommends? I have the manual but I'm not sure if they have our interests in mind or just enough to get beyond the warranty before catastrophic dealer service.

 

[JJA]

I was given an estimate of late next week. They get the new engine next tuesday. @DrivenDaily @campb292 @JJA @repairman54 Thank you for the advice and help. I had been changing oil every 5000 miles and it slipped to 7500 the last couple. I am not sure what oil I used. I intend to buy the regular platinum but I worry I picked up the ultra platinum by mistake. I don't have the bottle now. You guys have always been so helpful and thanks again for putting up with my previous outburst. Is there a guide on here that has all the maintenance the community recommends? I have the manual but I'm not sure if they have our interests in mind or just enough to get beyond the warranty before catastrophic dealer service.

Thanks jeffk. I’m curious, are you doing 30k miles annually? Mostly highway? You should be able to change @ 6k miles -wondering what your OLM % is at 5k vs 7.5k

 

[jeffk]

Thanks jeffk. I’m curious, are you doing 30k miles annually? Mostly highway? You should be able to change @ 6k miles -wondering what your OLM % is at 5k vs 7.5k

Close I have a twice a month trip for Oklahoma City to Amarillo Texas that piles on the miles. The rest is just driving around OKC and sometimes Tulsa which is pretty hot and dusty in summer. When I was changing it more aggressively it was 33% on the monitor which was 5000 miles.

 

[JJA]

Close I have a twice a month trip for Oklahoma City to Amarillo Texas that piles on the miles. The rest is just driving around OKC and sometimes Tulsa which is pretty hot and dusty in summer. When I was changing it more aggressively it was 33% on the monitor which was 5000 miles.

I’d stick to 5k then-best to you

 

[jeffk]

My dealer called and said they sold the loaner I am driving and need it back by 3pm. I called service and they told me the engine didn't arrive and there is no eta. I asked for another loaner and they don't have any. I told them I need a car so will have to keep the loaner. They said if I don't return they will send a tow to its location. I called Hertz and rentals are 60 a day! I called GM and they said there are no loaners for out of warranty repairs. I'm not impressed. You would think they would be extra kind when a product fails but they don't care at all.

 

[campb292]

My dealer called and said they sold the loaner I am driving and need it back by 3pm. I called service and they told me the engine didn't arrive and there is no eta. I asked for another loaner and they don't have any. I told them I need a car so will have to keep the loaner. They said if I don't return they will send a tow to its location. I called Hertz and rentals are 60 a day! I called GM and they said there are no loaners for out of warranty repairs. I'm not impressed. You would think they would be extra kind when a product fails but they don't care at all.

I'm sorry you are going through this. It's pretty gross, no excuse. It is probably true they have no obligation but decency is always optional.

 

[JJA]

My dealer called and said they sold the loaner I am driving and need it back by 3pm. I called service and they told me the engine didn't arrive and there is no eta. I asked for another loaner and they don't have any. I told them I need a car so will have to keep the loaner. They said if I don't return they will send a tow to its location. I called Hertz and rentals are 60 a day! I called GM and they said there are no loaners for out of warranty repairs. I'm not impressed. You would think they would be extra kind when a product fails but they don't care at all.

How about Enterprise Rental? Are they part of client services and maybe give some sort of discount? Maybe get the dealer to pay half or at least 25%? Hopefully

 

[jeffk]

I picked up the car this afternoon. After freaking out on Chevy care the next day they brought me another loaner. The new engine has a 3 year 100,000 mile warranty. I feel like I have flushed 4800 down the toilet but 4,800 is better than 8,000.