It has happened twice now----my TC engages out of the blue. And, since I have a different ratio in the front axle it is not pleasant. I just lifted my K5, as many have already heard about, and I did not adjust the TC at all, should I have????? The driveline angle did not change very much.....I have not other explaination why this happens. The shift lever does not move but for some reason the front driveshaft starts turning. I happened once in a parking lot after I went over a speed bump and again tonight but I do not recall hitting any major pot holes or bumps. Any ideas???? Maybe my TC is on the way out. Thanks for replies.