BREAKING: GM is officially recalling the L87

[MishawakaKirk]

Off the wall question --
Having a 2023 Denali, I'm on the list...
So if I keep driving until GM decides what they are going to do; what happens to me, if the engine dies in the middle of no-where? Will GM somehow cover my towing bill and related expenses?
A few times a year, I take my truck on a 1,000 mile trip. The trip is 100% Interstate; but there are sections with not too many places to help. I'm nervous about getting stranded with my family, dog and a loaded truck.

Am I just SOL, and on my own?

 

[jfoj]

@Vladimir2306

Sorry to hear about your failure. Seems for what ever reason you made it to 75k miles. What was the ambient temperature when the engine failure occurred. Assume warm as you had the jetski trailer in tow. I also saw you were using to mode as well

 

[jfoj]

And by the way, with 0-40 I swear I’m seeing a couple, few pounds more psi. I know, with our gauges it’s like using a yard stick in a machine shop.

The oil pressure may be slightly higher however I think the variable displacement oil pump design may modulate the pressure a bit. With 0W40 in my engine at idle around 35 PSI, while cruising around 1600 RPM about 45 PSI. The problem I feel with the 6.2l is 0W20 may not hold up to higher heat well before it thins out on long highway runs. One the oil starts to warm up over 212F/100C the HTHS starts to drop, then you have a vicious cycle. Once the oil starts to thin, less protection and probably more heat generated.

I personally see nothing good coming from 0W20 a High Torque, lower RPM engine operation propelling 6000+ lbs vehicle.

 

[2024 White Tahoe]

Off the wall question --
Having a 2023 Denali, I'm on the list...
So if I keep driving until GM decides what they are going to do; what happens to me, if the engine dies in the middle of no-where? Will GM somehow cover my towing bill and related expenses?
A few times a year, I take my truck on a 1,000 mile trip. The trip is 100% Interstate; but there are sections with not too many places to help. I'm nervous about getting stranded with my family, dog and a loaded truck.

Am I just SOL, and on my own?

Your power train warranty includes 5 years and 60,000 mile coverage with roadside assistance.

Ensure the GM roadside assistance phone number is programmed in your phone.

 

[vcode]

I had my oil changed a couple of weeks ago and my dealer put in Mobil 1 0W-40 Supercar oil per the recall (but didn't perform the recall since it hasn't been released yet). That cost me an extra $37 or so more than normal. I had them take a sample of the 0W-20 that they drained out, and I sent it to Blackstone for my own peace of mind. For reference, my Yukon XL has 50k miles on it and this was the 10th oil change. I had the first one done at 600 miles and then changed it roughly every 5-6k miles since.

I've attached my analysis. Thankfully all of the numbers look good and there's no sign of bearing wear. Maybe that'll help reassure some of you with higher mileage engines. But seeing how several people aren't getting any warnings before failure, I'm still a bit concerned. Especially after seeing Vladimir's post today .

Interesting with all the talk about fuel dilution, your's was less than 0.5%. Go figure.

 

[jfoj]

The problem with fuel dilution you really never know how bad it may be until after the fact. Local climate and driving conditions/habits factor into fuel dilution. A kot. Also the sample was taken at about 1/2 the typical oil change interval. I assume maybe a lot of highway driving?? I would be surprised if this sample was taken after Winter driving in the North East.

 

[vcode]

The oil pressure may be slightly higher however I think the variable displacement oil pump design may modulate the pressure a bit. With 0W40 in my engine at idle around 35 PSI, while cruising around 1600 RPM about 45 PSI. The problem I feel with the 6.2l is 0W20 may not hold up to higher heat well before it thins out on long highway runs. One the oil starts to warm up over 212F/100C the HTHS starts to drop, then you have a vicious cycle. Once the oil starts to thin, less protection and probably more heat generated.

I personally see nothing good coming from 0W20 a High Torque, lower RPM engine operation propelling 6000+ lbs vehicle.

Run what you want. But Ford calls for 5W20 in their 5.0L pick-ups and Dodge Ram's with the 3.6L or the 5.7L Hemi call for 0w20. Guess none of them were tested in Death Valley......

 

[squark]

The problem with fuel dilution you really never know how bad it may be until after the fact. Local climate and driving conditions/habits factor into fuel dilution. A kot. Also the sample was taken at about 1/2 the typical oil change interval. I assume maybe a lot of highway driving?? I would be surprised if this sample was taken after Winter driving in the North East.

I should have posted my driving habits for reference. My previous oil change was at the end of January and I live in the south, so the weather was pretty moderate over those miles. About 15% of my miles are towing a 7,200lb travel trailer on the highway and the rest are mostly 15-20 minute drives in city traffic.

 

[BADRIDES]

You could be correct. Based on my conversation with him, I got the impression that decisions were stilling being made about how to handle it. I am due for an oil change and I am taking it in soon and I asked him if he would put the 0W40 oil in it and he said he would. But he made it sound like I was on the hook for it.

If you come in a GM dealership right now with a 6.2 from 2021-2024 then yes you are responsible for paying for it if you are asking to put 0-40 oil in it. I'm gonna make you sign the original hard copy giving me permission to perform the work. So if something happens to your engine before GM authorizes this particular fix and you have trouble then they have an exit. I get 2-3 calls a day about people asking about changing oil and if you want to pay for it and sign the original hard copy I will put Mrs. Buttersworth's in there if you want it.

 

[Vladimir2306]

@Vladimir2306

Sorry to hear about your failure. Seems for what ever reason you made it to 75k miles. What was the ambient temperature when the engine failure occurred. Assume warm as you had the jetski trailer in tow. I also saw you were using to mode as well

No, it was cold, +7C