Every once in a while my Chevy Silverado will start but then pops when I press down the gas then after popping a bit it will run normal problem getting worse also gives off a weird smell while popping

SOURCE: 2001 chevy silverado won't start when warm

Possible weak spark from ignition coil or low fuel pressure due to weak pump. Try spraying carb clean into intake throttle body when problem is present. If vehicle will start and run with a little spray then fuel pump is failing.

SOURCE: 2001 chevy silverado engine ''sputters'' and is losing power-

Backpressure is the result of any obstruction in exhaust flow. Both the converter and muffler create a certain amount of backpressure by design. If the cat becomes plugged, exhaust cannot properly escape and can cause an extreme lack of power. (Engine can't draw in what it can't expell out the other end) Usually the rotten egg smell is also accompanied by a "wheezing" sound in the cat as well.

SOURCE: My 97 Chevy Malibu won't stay running.

there are two components that you should be looking at one is called a throttle position sensor and the other is a idle air control motor/valve.these two will make the car hard star or not start at all.the are both located in the general area of the intake manifold right where the throttle cable connects.

SOURCE: starts but dies as soon as i let off the gas wont

replace the gas filter just follow the gas line of the carb it should be easy to find

SOURCE: 88 CHEVY PICKUP SILVERADO STOPS RUNNING IS JUST WARM

Sounds like a bad ignition coil. Check for spark right after it quits Coils can and do quit working after they get hot. Also check magnetic pick up coil in distributor. After reaching operating temp computer will move the coil and a broke corroded wire loses connection. Then when engine back to cold wire is back in contact and working. Hope this helped.