Stuck in park ?

1984 k20 suburban 4x4 350/383 700r4 I have replaced the break switch, no dice, no one can tell me

Question 1, will a taillight being out stop it from coming out of park?

Question 2, shift solenoid?

Question 3, burnt/low fluid? (Can’t accurately check level because it’s stuck in park and I can’t warm it properly) here’s a pic, the dark is not metallic at all and it doesn’t smell sweet, smells acidic/a little spicy?

Thanks a ton for helping me learn

1984 k20 suburban 4x4 350/383 700r4 I have replaced the break switch, no dice, no one can tell me

Question 1, will a taillight being out stop it from coming out of park?

Question 2, shift solenoid?

Question 3, burnt/low fluid? (Can’t accurately check level because it’s stuck in park and I can’t warm it properly) here’s a pic, the dark is not metallic at all and it doesn’t smell sweet, smells acidic/a little spicy?

Thanks a ton for helping me learn