[smokewagon]

2011 ss 6l80 trans missing second. when i get off the line when its supposed to hit second i hit redline let off the gas get back in it and it will shift. rolling in third nail it drops down to second but want go back to third unless i let off then get back on the pedal. took it to the tuner found a little knock in the trans cleaned it up with the tune but the problem is still there. and normal driving everything works just fine. I can only figure it might be a shift solenoid but i really dont know a thing about automatic trans.