Internal radiator crack. This allowed the coolant and trans fluid to commingle thus causing the transmission to slip. It also had potential to damage many internal components. No external damage thus must be manufacture defect.
2006 Chevrolet Monte Carlo engine complaints
Page 2 of 2: complaints 11 to 12 of 12, newest first, as owners wrote them.
I have infrequent lifter noise. I have been told that this is piston slap. It's not piston slap. This problem has been reported twice. I got the same response. Piston noise. Symptoms: cold start..winter-fall or summer...lifter noise..valves clatter...engine runs rough..no codes..after idling for a few minutes the valves pump up and the roughness and noise go's away... I also have the odor of burt transmission fluid (hair burning) when accelerating.. I also oil 1qt a month.
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