doublemax

Have a 2021 Sierra 1500 and a 2024 Yukon, both with the 3.0. Both have the antifreeze smell. The Sierra tows my boat, etc. and works a touch harder. The dealer has done a pressure test on the Sierra and " No Leaks" yet I have had to add coolant a few times. Its going somewhere. Even though I smelled it early on, my Sierra is now past Warrranty and no pun intended, but I'm going to blow a gasket when they tell me the repair is 2K. A good friend used to race top fuel dragsters and then sold auto parts for his career. Was my Saturday mechanic, could use stethoscope and 6 seconds later tell you whats wrong. When stumped, while selling parts would get tips from the liscensed mechanics and 90% of the time, symptom A was 1 or 2 common problems. I have read about this antifreeze problem in multiple forums and its becoming way too common for GM not to recognize it. The antifreeze smell is starting to smell more like GM is avoiding it and does not want to hold themselves accountable.