Hit the saute button on the Instant Pot. Add some oil. When it's hot, add in the chuck blade steak. You can cut it in half if it doesn't fit or just brown it in a pan.
Brown the meat on all sides and then remove. Turn off the Instant Pot.
Add in all the rest of the ingredients, along with 2 cups of water. Mix to combine, making sure to scrap anything that stuck to the bottom.
Taste the water to make sure that is strongly seasoned. If it doesn't taste that way, adjust with more seasonings to taste. Don't skip tasting, it will help you have a more flavorful beef in the end.
Place the lid on the pot. Set to 1 hour cook time under high pressure. Seal.
Manual release the valve making sure that it's away from any cabinets or people. You could do natural release if you feel better about that.
Remove the meat from the pot. Drain the liquid into a measuring cup. Add the meat back in.
Shred the beef. Add small amount of liquid at a time and mix until the meat is moist but not soaking in the liquid.
Serve with your favorite taco fixings.