i got a 2008 grand prix, it was running wonderful until i changed the trans oil n filter. now i put it in gear n it wont move. it wont move in none of the gears R, D 2 1. thats strange,
Double check your fluid level first and make sure you have it full. Then make sure you did not dislodge any cable or connection that actuates the trans. If it is not either of these conditions, you may have damaged something internal if you removed the pan to drain it.
Check the filter and filter "O" ring for proper installation. If it's not in there correctly you'll lose fluid pressure and the car won't move. HTH. -Jim
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