I got a 2004 trailblazer LS transmission won't engage the gears. shifter will move from Park no problems there with the shifter cable. Park and neutral seem to be the only gears that work.... now the problem is I was driving down the road doing about 40 mph, when all of a sudden the transmission slips out of gear and does not reengage no matter what I did... had to have it towed. some people have told me it's the torque converter other people have told me that it's the linkage... while other people have told me that the transmission is shot entirely, I don't have the fundage right now to do anything that major, engine cranks and starts just fine, it's got just under 180k miles, I have replaced the fan clutch, the thermostat, the alternator, the starter, and a new battery when all this occurred. has this happened to anyone else anyone have any success in isolating the problem she could use a hand...ps... aside from a simple transmission fluid and filter change, is there anything else that could be causing my transmission to slip and stay out of gear and not re-engage?