It stopped running while I was driving down the highway

2000 gmc Sonoma v/6 Firing order, firing order for the 4.3L engine is 1-6-5-4-3-2.
Cylinder order drivers side 1-3-5 and passenger side 2-4-6,
Check the attached links,instruction and guides, Good luck
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4 3L firing order 1982 2005 Chevrolet 10 Blazer GMC S15 Sonoma Jimmy
Chevy Firing Order
2000 gmc Sonoma 6 Firing order Google Search Chevy Firing Order

1 6 5 4 3 2

If your battery light came on, and you smelled burning rubber, it could be that your belt that drives the alternator, which charges your battery is broken or flipped upside down. Do not drive with the battery light on or else you will stop dead when the battery does not have enough charge in it to keep the car running. If you decide to drive and not follow my advice, then be sure all extra electrical power is off eg. radio, fan, DVD, lights etc.

Lots of black smoke in the back i had a few problem like that it was the spider in the intake there a central injection system in it its 6 plastic pipe that goes to the cylinder 1 per cylinder 1 or 2 pipe crack and spray gas in the intake your oil must smeel like gas even if its not old let me no after that your car gonna run like new its not a cheap part but you got no choise thats for the question james

Are you trying to reset the "Check Engine Light"? If so, go to your local Autozone/ O'Reilley's/ Advanced Auto and borrow one of their engine code readers. You can reset the CPU using the code reader.

try fuelfilter and check the fuel psi it maybe fuelpump.goodluck

Probably the CV joint. When you put it in 4x4 that puts extra torque on it so it wont vibrate so much.

U HAVE A HEATER CORE LEAK, DOES THE SMOKE SMELL SICKY SWEET? AS FAR AS THE CEL GOES HAVE THE SYSTEM TESTED FOR FREE BY ANY KRAGEN AUTO OR AUTOZONE, JUST ASK FOR A OBD 2 TROUBLE CODE TEST, THEN POST THE CODE BACK HERE FOR US TO LOOK AT AND TRY AND DEVELOPE A FIX STRATEGY.

If its in the engine compartment there is an antifreeze leak..If it inside the car like like near to the windshield, you have a bad heater core. Good Luck contact me if you need more help.