Just picked up my 23 avalanche! At the 50 mile mark the dreaded wrench popped up on dash: powertrain/transmission malfunction, then went into limp mode. Turned truck off, and waited a few hours. Light then went away and hasn't come back up since. Any ideas?
My 2023 goes in Monday for its second driver side turbo replacement. First turbo replaced at 2000 miles, I noticed during full WOT pulls It felt like the driver side engine bay was rattling, hear a weird sucking noise from intake and a loss of power after about 4000 RPM. At that time I had the S&B cold air Intake on. Did about 8-10 WOT pulls heard a gnarly screeching noise and got the “Power Reduced Notification” and white smoke out the exhaust. Ford replaced the turbo, now in at 2,400 miles, I went to pass someone last week full WOT and felt the same thing I did before. Did a total of 4 WOT pulls and felt the exact same with the engine bay rattling, sucking noise from intake and loss of power. But did not blow the turbo yet… swapped to the stock cold air Intake went out driving and did 8-10 full WOT pulls no issues at all. No engine bay rattling, sucking noise from intake or loss of power. Drove just fine home. Took the truck out today and started to hear a weird turbo whistle from driver side turbo on normal driving around town and getting on the freeway, shortly after I noticed a huge lack of power when driving. No notifications or “power reduced” and no smoke out the exhaust. The first turbo that was replaced Ford said it was the turbo bearings that went bad, curious what they say is up with this one.