RG23RST's latest activity
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RRG23RST replied to the thread NHTSA opens preliminary probe into more than 870,000 GM vehicles.Why are you folks still bringing it up LSPI? It simply isn’t a concern on naturally aspirated engines. That was only an issue on early...
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RRG23RST replied to the thread NHTSA opens preliminary probe into more than 870,000 GM vehicles.Pumps are not interchangeable but you'd think they were looking at them. Both are "2 stage" as in they're both variable geometry pumps...
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RRG23RST replied to the thread NHTSA opens preliminary probe into more than 870,000 GM vehicles.LSPI really isn't an issue with atmospheric engines. Forced induction different story.
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RRG23RST replied to the thread 2024 Tahoe - 10L80 issue.You really don't feel the vibrations when the engine is operating in a rolling 4/5/6/7/8 cylinder operation with DFM. It's only when it...
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RRG23RST replied to the thread NHTSA opens preliminary probe into more than 870,000 GM vehicles.I see zero and I mean zero reports on Techline of bearing issues with the L84 or L8T. A few reports of internal oil pump failure that...
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RRG23RST replied to the thread NHTSA opens preliminary probe into more than 870,000 GM vehicles.The vane-style pumps fail to high pressure/high(er) volume if the pump control solenoid ever fails. They also are less prone to aeration...
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RRG23RST replied to the thread NHTSA opens preliminary probe into more than 870,000 GM vehicles.Changing the oil more often or to a different viscosity won't help you. The issue is with the bearings in the bottom end of the motor...
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RRG23RST replied to the thread Transmission fluid change.Gotta drop the y-pipe. Replace the exhaust gaskets even if they look fine.
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RRG23RST replied to the thread DFM disabler released.The answer to all your guesses is no. GM has used an advanced neural network/AI algorithm in the engine controller since this generation...
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RRG23RST replied to the thread DFM disabler released.You need to watch the actual current to the solenoids, not what the ECM is commanding. Remember the Range device sits on the “output”...
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RRG23RST replied to the thread GM now offering the Factory Service Manual as a subscription?!?.Why are you giving a third party your money? Just get a subscription to ACDELCO TDS and you can browse the same technical manuals as...
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RRG23RST replied to the thread L87 6.2: “NHTSA to investigate potential for engine failure in nearly 1 million GM trucks, SUVs”.Aircraft engines aren't produced by the millions though. Any mass produced engine is going to "make metal" more than a low volume engine...
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RRG23RST replied to the thread L87 6.2: “NHTSA to investigate potential for engine failure in nearly 1 million GM trucks, SUVs”.This problem didn't exist before MY21 on the L87. It's not an oiling issue. The 5.3 and 6.6 would suffer the same fate if it was because...
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RRG23RST replied to the thread L87 6.2: “NHTSA to investigate potential for engine failure in nearly 1 million GM trucks, SUVs”.Both the L84 & L87/L8T pumps have a high stage and low stage so they aren't that different in some respects. They aren't interchangeable...
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RRG23RST replied to the thread NHTSA opens preliminary probe into more than 870,000 GM vehicles.The oil pressure these engines run at isn't an issue. The vane-type oil pumps in the L84/L87 are high volume even when the commanded PSI...
