Sprinkle both sides of steaks with garlic-pepper seasoning and salt. Heat oil in a large nonstick skillet over medium-high heat. Add steaks, and cook 3 minutes on each side or until done. Remove steaks from pan; keep warm.
Combine vinegar and broth in pan. Bring to a boil; reduce heat to medium-high, and cook 5 minutes or until sauce is reduced to a 1/4 cup, stirring occasionally. Spoon sauce over steaks.