once the engine warms up and I presume the transmission also....I'll be cruising around (whether at 30mph or 65mph) and at random it will suddenly downshift.... at high speeds of course it gets dangerous with tires screeching... I have to shift into neutral... then ease it back into drive and it catches high gear for a while until the next random downshift.....

sometimes it won't shift out of 2nd until i put it in neutral and drop it back down to drive....

it's very strange.....