just got an 04 Tahoe 2 weeks ago. the ignition switch has stuck in the start position a couple times on me. had to pull it back. it also just cranks when that happens. have to turn it off and try again then it will start. anyone had this issue? didn't know if it was the electrical part sticking or the key part. may try to put some graphite lube in the key part and see what that does. it has 210K on it.