I have a 2004 Trailblazer that has been a good vehicle, but it got to running rough. I checked the we and everything said that I need to clean the Throttle body, so I did, using throttle body cleaner, with the throttle body off the vehicle. I put it back on, it runs smoother, but will not rev up, can only get about 3500 rpm....wide open. It also will not go into any gear now, so it will not move. All the gauges are at 0 or all way to left. Check gauges light along with other lights are on in cluster. The battery was weak , so i replaced it also. It sat a week while i was out of town and the battery was dead when I got back. I don't think that it was anything that i did. The gauges was acting up prior to cleaning the throttle body. But I don't know what it could be causing the no rev on engine and no transmission. Does anyone have any ideas....i am out of ideas....HELP PLEASE!!