The most problematic??? Just not true. The lifter and main bearings in the 2021+ are the most problematic engine ever to come from GM hands down. Service departments and parts department cant keep up. They are packed with warranty. I have two friends who are GM techs and I ask them about everything we see here. Told me if i want gas dont get anything past a 2020 and delete it in the tune. 2021+ a big no go as per them. So we bought a 2018 Escalade and did an AFM delete in the tune. The 3.0 is very reliable and most have zero issues. He told me of several known issues regarding my 2021 3.0 . Said some are a real pain to diagnose but overall they are a solid motor. ALL modern diesels have issues due to emissions. Some more than others. But its just a general consensus of 3.0 owners its a great powertrain. Many guys well over 100K and not one warranty issue. These gas motors are eating cams at 7K. Saw a brand new escalade in his bay last week...bottom end shot...two months old! If you have had problems with 20 variants of diesels....your the first person I have heard say that. 20 diesels and all were a problem??? Most 3.0 owners get another one or holding onto theirs. Yes few have had issues......but its few.
Right now today,
in the garage we have 3 6.2's and and 3 3.0's, across denali suv's and pickups.
none of the 6.2's have had any warranty issues on the powertrains
all of the 3.0's have had warranty issues (bad turbo, oil seals leaking, emissions issues, etc)
for me, the 3.0's are absolutely problematic
