Suburban2500 2003 tranmisson hot

check the vacuum actuator and hoses for ther transmission

It is slipping & your still driving it,so you did it in

Joe is correct,it has to be rebuilt,then continue on,
if you still have electronic issues

Transmissions last about ten years tops

They fail mostly because the fluid is not changed
every 2 to 3 years, regardless of mileage

The first thing I have to ask you is When was the last time the transmission was serviced? Transmission fluid and filter change?
A thumbs up would be greatly appreciated if this answer is helpful to you. Have a GREAT DAY and GOD BLESS YOU.

Check to see if the kickdown cable from the throttle linkage to trans is working.
Next step is to get someone with auto experience to drive it and give a more accurate diagnosis.

it right under the shifter and tranmisson or drive shaft

they adjust to you needs as well the driver if you have 2 drivers on the same vehicle it will program itself after 20 times on gas pedal or 30 mins of driving so people dont like this as well going up or down moutain roads the trans shifts by itself or applies the brakes going down hill so its a different adaptation of learning to drive it

i had a car that done this it sat for 3 months until i found out that they are 2 different kinds of speedomoter cables one diganel the other a standard speedometer cable mine took the digental if you get under your car an look where the tranmisson is youll see a cable going into the tranmisson if you do its a digintal one an mine was broke at the little bulb that went into the tranmisson an your car will start an shiff gears but it will not move at all replace this an then it will drive a machanic told me i needed a new tranmisson but i didnt so they are 2 kinds of speedomoter cables this was my cars problem

I would very first recommend checking your transmission fluid. It may be low and would cause the lurches and the rough shifts.

catalyc converted gets clogged and it will run really rough and **** and feel like its missing

Could also be a faulty mass air flow meter, or throttle position sensor. It's hard to tell, you need to take it to a shop to be properly diagnosed.