You should ask a more specific question. The drive-train includes everything from the engine to the wheel hubs.
It is internal to the alternator, voltage regulators are used on cars with generators. You could fix it, but its easyer to just buy a new alternator.
If the cable aren't frozen. Adjust the rear brakes first. Then if possible, haven't looked at mine in awhile adjust the cables probably under the car
Try replaceing the filter or the fuel pressure regulator.
Have you checked the timing? It could be that or something else wrong with the ignition system.
How to fix a gas hand on a 2001 Pontiac Bonneville
take battery cable off its a tempary fix but you have something behind the instrument panel blown
how to fix the light for the clock radio in a 2003 Pontiac grand am
How do yo fix a stuck driver side electric window on a 1998 pontiac firebird.
Its Under the distributor cap and button held on by two Phillips head screws or 2 8mm bolts Very easy fix.
how to check fuse for horn in a 1998 Pontiac sunfire
There is one on the grill and one on the firewall.
To fix the Pontiac Sunfire if it jumped time, the timing belt has to be replaced. Then the car has to have the timing set again after the belt is replaced.