Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hello & Welcome,
You can try the following procedure to see if you can get the system reprogrammed & be able to start it.
Follow the instructions as carefully as you can, especially the part in Red.
I hope this helps. Please let me know how it goes.
Take Care, Greg A.
The procedure shown assumes that a proper key is being used, that the passkey module (in the ignition area) is working, and that the Body Control Module (BCM), and Powertrain Control Module (PCM) are all working properly.
Any one of these systems could be having problems, and it will most likely take a Tech 2 scan tool (like the dealer uses) to figure out what is happening here. Let me know what happens after you reconnect the battery.
So it now does nothing? No attempt to start at all?
Have you had any problems with the battery lately (like running down)?
Hmm. It seems like we are going backwards here.
Let me give you the starting system schematic and description of the system.
The PG-260L is a non-repairable starter motor. It has pole pieces that are arranged around the armature within the starter housing. When the solenoid windings are energized, the pull-in winding circuit is completed to ground through the starter motor. The hold-in winding circuit is completed to ground through the solenoid. The windings work together magnetically to pull in and hold in the plunger. The plunger moves the shift lever. This action causes the starter drive assembly to rotate on the armature shaft spline as it engages with the flywheel ring gear on the engine. At the same time, the plunger closes the solenoid switch contacts in the starter solenoid. Full battery voltage is then applied directly to the starter motor and it cranks the engine.
As soon as the solenoid switch contacts close, current stops flowing thorough the pull-in winding as battery voltage is now applied to both ends of the windings. The hold-in winding remains energized; its magnetic field is strong enough to hold the plunger, shift lever, starter drive assembly, and solenoid switch contacts in place to continue cranking the engine. When the engine starts, the pinion gear overrun sprag protects the armature from excessive speed until the switch is opened.
When the ignition switch is released from the CRANK position, voltage is removed from the starter solenoid S terminal. Current flows from the motor contacts through both windings to ground at the end of the hold-in winding. However, the direction of the current flow through the pull-in winding is now in the opposite direction of the current flow when the winding was first energized.
The magnetic fields of the pull-in and hold-in windings now oppose one another. This action of the windings, along with the help of the return spring, cause the starter drive assembly to disengage and the solenoid switch contacts to open simultaneously. As soon as the contacts open, the starter motor is turned off.
I would start by checking that crank fuse in the underhood fuse block.
I am also going to try and call in some help as my time will be limited on here after the next couple of hours.
I have already sent a couple of notes to other experts here, so if someone else jumps in, it is because I asked them to.
Let me know what you find on that schematic.