In a plastic container, add garlic salt and coarse black pepper. Blend together. Evenly sprinkle to all sides of the roast.
Follow directions of your Electric Pressure Cooker or press the Saute button for Instant Pot to heat. Add olive oil and heat for a few minutes.
Add in roast and brown on one side. Use a large meat fork heat on remaining sides until brown.
Add the remaining ingredients and stir well. Following directions of electric pressure cooker add lid, lock and secure per manual. Press the manual button and select time to 90 minutes.
Follow directions for your electric pressure cooker or with Instant Pot select quick release and use per manual.
Once it is safe open and use two meat forks to plate pork roast on platter. Remove bone as needed. Ladle meat juice on top of roast and serve.