I have a cousin with a shop in Montreal and he is

Power steering does not seem to have any assist when at a stop. Tests/Procedures: 1. The power steering assist is speed dependent and should be quite easy when stopped/low speeds. This is controlled by a solenoid on the side of the steering gear box.

2. Check for faults in all control modules. The general module is what controls current flow through the solenoid. Clear all faults and see if power steering operation is normal.

3. At the servo, check for power and ground from the general module. If none present, check wiring back to general module connector X254, pin 9, Black/White and pin 11, Black/Red.

4. Replace solenoid as necessary.

5. Disconnecting the solenoid will remove the variable assist function, but the steering system should still have considerable assist. If it does not with the solenoid disconnected, consider hydraulic faults as the most likely cause. A failed power steering pump is much more likely than the steering gear. Potential Causes: Defective General Module
Defective Power Steering Control Solenoid
Defective Power Steering Pump
Damaged Wiring
If your cousin has access to wiring diagrams he will be greatly advantaged in diagnosing this issue Good luck