KMeloney
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What “recall repair” was done?
BREAKING: GM is officially recalling the L87
- Thread starter DontTaseMeBro
- Start date
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Feds Opens New Investigation Into GM's 6.2-Liter V-8 Over Owner Claims Recall Fix Didn't Take
Some owners claim that their engines failed even after a recall remedy was performed, NHTSA officials say.
Aggie76
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Anyone see the following and have any comments? Found it on Motorbiscuit.com tonight.
"Previously, OW-20 oil was recommended for the engines. But GM mandated that if engines passed inspection, they needed Mobil 1 Supercar 0W-40 oil instead. If they failed inspection, they got replaced.
But according to Car and Driver, it’s time to change oil types again. GM issued a bulletin to dealers instructing them to use Mobil 1 FS 0W-40 now.
Reportedly, the 0W-40 oil corrected the issue related to the recall. However, the FS 0W-40 is more affordable and widely available to provide savings."
Assume the "FS" stands for Full Synthetic.
"Previously, OW-20 oil was recommended for the engines. But GM mandated that if engines passed inspection, they needed Mobil 1 Supercar 0W-40 oil instead. If they failed inspection, they got replaced.
But according to Car and Driver, it’s time to change oil types again. GM issued a bulletin to dealers instructing them to use Mobil 1 FS 0W-40 now.
Reportedly, the 0W-40 oil corrected the issue related to the recall. However, the FS 0W-40 is more affordable and widely available to provide savings."
Assume the "FS" stands for Full Synthetic.
Marky Dissod
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How in the fu, kdoes 0w40 'correct' bad or unfinished machining? How does 0w40 protect the bearings from loose debris that was not washed out before assembly?
How does 0w40 get rid of the swarf in the oil pan?
2024 White Tahoe
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Not the Tahoe - but more manufacturing debris problems with a different GM truck engine: https://gmauthority.com/blog/2026/0...erado-colorado-traverse-engine-ticking-noise/
Aggie76
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Clearly it doesn't. Someone is drinking the kool aid.
DontTaseMeBro
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Ha! Jokes on them. I never bought into the Supercar variant and instead opted to buy/use the European Car Formula 0W-40 due to it costing half as much per quart. My money is on that is what they're talking about in this latest change. Cause the only other 0W-40 offering by Mobil 1 is ESP variant which is for DPF-equipped diesels and it's not Dexos R approved. The other two are.
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Seems like the chatter is slowing down. Was at the dealer this week. Not seeing many failures coming in. Crickets according to them.
Impossible to order a 3.0 right now. 0 available in all of Canada coast-coast and 0 allocations given last week lol. You can buy a 6.2 but even then, aren’t many Yukon XL Denali’s available out there.
Impossible to order a 3.0 right now. 0 available in all of Canada coast-coast and 0 allocations given last week lol. You can buy a 6.2 but even then, aren’t many Yukon XL Denali’s available out there.
Why is the 3.0 market tight. Is everybody buying them as soon as they hit the lot or is gm reducing production?
That’s what I’m wondering. I think it’s a bit of both. Or is all the allocation being kept for the US market right now? My sales manager showed me his ordering screen. They were getting tons of diesel allocations in the fall but it’s been crickets for a couple months. This is a big high volume dealer with several locations too. But again 0 diesels were allocated across all of Canada last week wild. I’ll see what tomorrow bings.
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