I can’t tell if it’s the transmission or not but sometimes my 1993 S10 blazer will act like it’s in neutral when it’s actually in drive when coming to a stop and then taking off. And the only way to properly make it take off is going into low gear and then putting it back into drive. Then it’ll take off in drive normally for a while. Maybe for the whole time i drive it too. I have no idea what it could be, transmission never showed signs of being bad except for one hard shift from 1st to 2nd. Any one have any ideas what it could be? Bad tranny? Throttle cable or shifter cable?

Sounds like the input sprag(one way clutch) has failed. Pretty common on these model transmissions. #17

15. Horrible noise in 4th and feels like the brakes are on: overrun clutches are applying due to a cracked or leaking forward piston. Overrun clutches will be worn out after 30 seconds of this behavior. Car can be safely driven in D. Transmission must be removed and rebuilt.

16. Soft shifting, gradual performance degradation: Poor line pressure rise due to leaking boost valve, clogged EPC filter screen, failing EPC solenoid, or worst case: leaky seals throughout. Seal restorer may fix last problem, but probably remove and rebuild needed.

17. No forward movement in OD or D, but L2, L1 and R work: Forward sprag is broken. Transmission must be removed and rebuilt. Try not to run or drive the car or further damage could result.

18. Extremely harsh shifts from P or N, normal shifts at WOT: EPC (Electronic Pressure Control) solenoid failed. Fix as soon as possible or hard parts will eventually break.

19. Loud bang, grinding sound, loss of all gears, and a binding driveshaft: Snapped output shaft. Try to wiggle driveshaft – if more than 0.020″ play, that’s the sign. Must be removed and transmission rebuilt.