Hello all hopefully I can get some possible trouble shooting things. Well it starts as my 04 blazer after getting a trans flush not more than 1k miles after decides it wants to start leaking trans fluid. I could not locate leak, however I believed it may have been from on of the trans cooling lines. Anyhow I had to get vehicle towed as it barely moved and I believe it finally just had no more fluid in it that it just made it up my driveway. It sat for quite some time and recently filled it back up with approx 7 at of fluid. I started it let get warm, put it on Reverse, D,3,2,1 nothing engages. Specs says it takes 7 quarts and that's assuming torque convertor was empty too. Why wont it engage any gears what so ever.? I plan on taken the pan down changing filter, gasket, . Is there anything else I need to check? Is it possible all solenoids went bad? Tcc Solenoid too? HELP. !!!