My 1994 Pontiac Grand Am started this morning and was running in the drive way. about twenty min later I went to get in it and the Cab was filled with smoke and it wont start or even turn over. What could be the problem?

I would have someone run a diagnostic on car probably going to be the 02 sensers

do you know if the remote is a after market or factory remote. have you tried to stick the key in the door lock and lock and unlock the door,and when start it. all new cars have have theif module in them ,and if is bypassed it will lock up

Get the trouble code that is stored in the computer.This can get us in the right direction.

the mass air flow sensor will cause this. you can remove it and spray it with electrical cleaner or maf sensor spray. you can buy at any auto parts store. follow directions on can for maf sensor spray. this sensor is very sensitive to dirt and debris. and also make sure air filter is clean and hose from filter is free from dirt.

1. First check the fuel filter if there's a lot of elements inside it then replace it.
2. Check the alternator as well. Visit a good mechanic.
   

I’m happy to assist further over the phone at https://www.6ya.com/expert/ramy_d9e7ebea3891f482

yes it is in the tank and the cost of the pump is about 150 dollars plus cost to install it.

Not an expert by any means, but I had a similar problem.
Everything was fine until one morning (it was a bit chilly out in my defense) I used my remote starter to warm up the car before leaving.
I forgot I had used the remote and hit the brake to shift into drive. Engine stopped (obviously with no keys in it!). I thought I could just put the keys in and go, but ignition would not catch.
I've actually made that mistake a few times before, but that day, for the first time ever, it prevented the engine from starting for a good 2 hrs.
Really was no solution. I just let it sit and kept trying every 30m or so with both the key and remote starter. The remote starter finally got it going again and this time I followed the instructions (put key in and turned to "On" position).
Since then, it has started up as usual.

sounds like you need a new ignition switch the pass lock is screwing up common.

maybe the started is bad. guess. something to check.

2000 rpm is too hi if it runs their in gear should run about 1500 in park and a 1000 in gear that were mine is i have a 94 gp and if u get water in gas just put a bottle rubbing alkieholl in it cheeper and works just as well