My 2003 has about 235K on it now. I'm getting what I believe is torque converter rumble in 2nd and maybe some in 3rd when gently accelerating. I have done a "home" fluid flush and I still have it. Just wondering if this was common. AFAIK there is no magic bullet other than a trans rebuild, but I was wondering if it was worth having a trans shop do a "power flush" with whatever they use. I have a friend with an older Tundra with an auto, and he's had wicked converter rumble for years and it just keeps going. My rumble is not that bad, so my thinking is basically to just live with it until something really craps out.