You SHOULD be. IF you underinflate, you can compromise the truck's handling and stopping. Its an 8400lbs truck. LOTS of weight on the front end empty.
Ideally you'll want 55-60psi all the way around.
Tire light. GM dealers won't help. LIABILITIES. Others have mentioned tools that exist. That will be your only route.
It only pools overnight. I can let it sit after running at temp for 4 or 5 hours and when it re starts there’s no smoke or misfire. I also find it strange it’s only on cyl 8 if it’s a pcv issue. When looking around with the bore scope the best I could it seemed like it was coming from above, but I had also run the truck prior (needed to pull it in the shop)
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