Notes: Drum Brake Adjusting Screw Assembly -- S280. 1967-1973 GMC K15/K1500 Suburban. 1967-1970 GMC K15/K1500 Suburban. 1974 GMC K15/K1500 Suburban. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.