Are you running the A/C at the same time? Is the engine cold or hot ?tell me first, there may be a couple of things wrong.
bad ground from either the battery or engine block to the body plus, year make and model would be helpful.
The jerking and bucking is probably along with a pop sound from the engine. This always indicated a LEAN condition with the Engine. In other words, it is NOT getting enough fuel to run under a load or that speed.
There must be a "check engine" light on. Start with investigating the DTC's (Diagnostic Trouble Codes).
Your engine overheated for whatever reason.
It's possible that the engine actually died just before the Check Engine and oil pressure lights came on. If that's the case, the problem could be little more than the engine needing a tune-up or its idle speed raised.
50 for me but i hear 40 is the norm
Does the engine turn over ? Is the timing belt in one peice ? Faulty distributor ?
If the dash lights come on, but the engine won't start, check the starter. There could also be a problem with the fuel line or the spark plugs. If the engine turns over, but won't start, check all of the fuel sensors. If the motor has a clicking or buzzing sound, check the alternator.
depress the brake pedal and turn the engine switch to the start posiiton and start the engine,,, Does this mean to hold the brake down until you hear the engine start.
I'm assuming that your steering wheel has locked. Try jerking the steering wheel back and forth while turning the key to start it.
When you attempt to start engine, nothing happens-- similar to weak or dead battery. You may hear "click" and lights may dim, but engine will not rotate
If your 2003 Silverado is lurching or jerking when you start it the most common issue is the fuel pump.