My '22 Denali 6.2 is using a quart of oil every 2000 miles. GM says this is within specs. Have to check oil often as not sure if it will get worse. Any suggestions.
I had the exact same issue with a 2021 Tahoe High Country. The first complaint I told the dealer to park the Tahoe and do not move and do not start it till I come back the next morning. When I got back to the dealership I asked the service advisor, there shop foreman, the GM of the dealership to stand behind the truck and tell me what they see and what they smell. I remote started and they were like turn it off cause it was puffing black, blue and clearly burning engine oil. It had a burning oil smell too. I was being shunned too and they measured the oil too and there was less than a litre of oil even when they drained it. That time I was at 2700 kms still fresh off the dealership lot. At 3200 they did an oil change with oil consumption test and by 3800 kms I was down to 2 litres. By 16000 kms they bought it back and I had to fight for it.
Look into the VIN for if anything was missed in production and check for missing gasket seals in the block.
I ended up going up the chain of command and blasted on social media to GM Canada and Detroit. Eventually I was loud and heard with a lawyer directing me. GM bought back my truck and I got a 2023 Yukon Denali Ultimate with a Duramax. It’s so good! Nothing can compare once you had an issue with a 6.2L burning engine oil and then Duramax is the way to go in my opinion and my experiences. I had a lot of mayhem in my situation but unfortunately if you are now having that issue, it will be a fight and maybe you may have lemon law out your way.