Where is the orifice tub on ac unit 1991 Buick Reatta?

The orifice tube on a 1991 Buick Reatta is located in the A/C system, typically found in the liquid line between the condenser and the evaporator. To access it, you'll usually need to remove the front bumper and possibly the A/C lines. It's important to discharge the A/C system before attempting any repairs to avoid injury or damage. Always consult a repair manual for specific instructions related to your vehicle.