Do you actually hear a click?
The first thing that comes to mind is a bad crankshaft position sensor. When they start to go bad, heat affects them. When it shuts the engine down, spark is lost to the plugs.
Take a look through this link and let me know if it seems to mirror what you are experiencing:
If it does, I need you to either check for spark when the engine won't start, or using a live data scan tool, check for an RPM signal.
Here is a link that shows how to check for spark:
If you determine the sensor is bad, here is a link that shows in general how one is replaced:
Here are the directions specific to your vehicle. The attached pic correlates with the directions.
.2000 Oldsmobile Truck Silhouette V6-3.4L VIN E
Crankshaft Position (CKP) Sensor Replacement (24X)
Vehicle Powertrain Management Sensors and Switches - Powertrain Management Sensors and Switches - Computers and Control Systems Crankshaft Position Sensor Service and Repair Procedures Crankshaft Position (CKP) Sensor Replacement (24X)
CRANKSHAFT POSITION (CKP) SENSOR REPLACEMENT (24X)
1. Turn OFF the ignition.
2. Remove the serpentine drive belt from the crankshaft pulley.
3. Raise the vehicle on hoist. Refer to Lifting and Jacking the Vehicle in General Information.
4. Remove the right front Tire and Wheel assembly.
5. Remove the right front engine splash shield.
6. Remove the crankshaft harmonic balancer.
7. Note the routing of sensor harness before removal.
8. Remove the harness retaining clip with bolt (1).
9. Disconnect the sensor electrical connector.
10. Remove the sensor bolts (2).
11. Remove the sensor.
1. Install the 24X crankshaft position sensor with the bolts (2) and route the harness as noted during removal.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the harness retaining clip with the bolt (1).
Tighten the bolts to 10 N.m (8 lb ft).
3. Connect the sensor electrical connector.
4. Reinstall the balancer on the crankshaft. Refer to Harmonic Balancer Installation in Engine.
5. Lower the vehicle.
6. Reinstall the serpentine drive belt.
Let me know if this helps or if you have other questions.
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Monday, October 26th, 2020 AT 12:53 PM