1. Check the Wiper Motor:
* Listen for the motor: When you turn on the wipers, can you hear the motor running at all? If not, the motor itself might be burned out, faulty, or disconnected. This is the most likely culprit if the wipers *don't* move at all.
* Fuse: Check your car's fuse box for a blown fuse related to the wipers. Your owner's manual will show you the fuse box location and the correct fuse for the wipers.
2. Check the Wiper Linkage:
* Manual Inspection: With the wipers OFF, try manually moving the wiper arms. Are they stiff or binding? Look for any visible obstructions or damage to the linkage. Rust, debris, or broken parts can prevent the wipers from moving.
* Frozen Linkage: If it's cold outside, ice or frost may have frozen the linkage mechanism. Try de-icing the linkage with de-icer spray or warm water (be careful not to damage electrical components).
3. Check the Wiper Switch:
* Switch Malfunction: A faulty wiper switch might not be sending the correct signal to the motor. This is less likely if you hear the motor running, but possible if there's only a partial failure in the switch.
4. Check the Wiper Motor's Connection:
* Loose or Corroded Connections: The wires connecting to the wiper motor may be loose, corroded, or disconnected. Inspect these connections and clean or reconnect them if necessary.
5. Vacuum Motor (If Applicable):
Some wiper systems have a vacuum motor that operates the wipers. If your car uses this system, it could be malfunctioning. This is less common in newer vehicles.
Troubleshooting Steps:
1. Start with the simplest checks: Check the fuse first. This is the easiest and cheapest solution.
2. Listen for the motor: Does the motor run? If not, the problem is likely with the motor, its fuse, or its wiring.
3. Inspect the linkage: Look for damage, obstructions, or freezing.
4. Check the switch: This is the hardest to diagnose without a multimeter.
5. If all else fails: Consider seeking professional help from a mechanic. They have the tools and expertise to diagnose the problem accurately.
Safety Precautions:
* Disconnect the battery's negative terminal before working on any electrical components to avoid electrical shock.
* Never work on a vehicle while the engine is running.
By systematically checking these areas, you should be able to pinpoint the cause of your stuck wiper blades. Remember to consult your owner's manual for specific information about your Pontiac Transport's wiper system.
