I have an 07 Tahoe LTZ with 238k miles on it. Original engine and transmission. I had the oil pump replaced (at no small expense) last year to fix a low oil pressure issue. The mechanic said he was surprised how clean it was once he had it apart, and no metal shavings to be seen anywhere.
I...
I'm going through this right now. Exact same symptoms. I suspected the o-ring on the pick up tube, as did the service shop after seeing that the oil was aerated. Turns out mine was a bad oil pump. At 226k miles, I had to make the decision to replace the engine or the oil pump, since everything...
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