Hello everyone. I am new here. great to be here. I need some help on some transmission problems. My wife has a 2003 Chevrolet Suburban 1500 with the 5.3 ltr Vortec Motor and 82k miles. All of the sudden the other day, she could not go in reverse. Then she only has 1st and 3rd gear. No reverse, no 2nd, and no overdrive. Also, about 6 months ago the speedometer quit working, but i have seen where alot of people were having this problem. Now, the tach is acting up also. There are no shavings or burnt transmission fluid. The fluid id clean as can be. I dropped the pan and the filter didnt look to bad either. I could blow through it somewhat.There are small metal particles, which i was told is normal. I was thinking maybe it was something electrical. Maybe the speed sensor? I wonder if I changed the filer and added new fluid if that might fix it. I just find it hard to believe that this transmission is out after only 82k miles. This suburban has never pulled anything. Any help would be greatly appreciated as I do not want to get screwed by a mechanic that is not honest with me. Would a Transmission scan tell me anything? Thanks again.