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Old 02-05-2020, 02:24 PM   #3
nancygrl
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Drives: '22 Z71 RST Silverado
Join Date: Feb 2011
Location: South
Posts: 3,415
1. That's a normal reading for the oil gauge.
2. That's what I got from the manual as well, also lot's of varying opinions on the whether it needs to be done at 1500 miles even if not tracking....however; 2016,17 and even some '18's had what's know as rear diff groan/moan on first drive and cold temps. It did that on my first 2 6th gens. There's plenty of threads/posts on the topic. On my '19 SS/1LE I was proactive and changed out the diff fluid at 1000 miles. I'm nearly at 8k and it's been quiet.
3. Catch-can = Yes/No....lot's of opinions out there on the subject.
4. Yep, normal. It's what gm calls "smart charging".
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