about 9 months ago i replaced my 2nd gear(syncro) with a brand new one,yesterday i was street racing for about a hour and then the car started having problems with 2nd gear,when i raced i started missing 2nd but inever miss so i know it wasnt me. later that night i left the car cool down in the gas station(where all the racers meet) so i test the car again to see if i would miss second but it didnt it was all fine but driving the car home that night when i drive it normal i put second gear and it would spit it out,it didnt grind or anything its just spit it out.
what could be the problem?????

 

i think you can answer your own question.. synchro is out. try some gm synchro mesh tranny fluid

 

check your tranny fluid. usually when your gears pops out, its because you dont' have enough fluid in there.