Notes: Drum Brake Adjusting Screw Assembly. 1968-1969 GMC C15/C1500 Suburban. 1968-1970 GMC C15/C1500 Suburban. 1970 GMC C15/C1500 Suburban. 1971-1974 GMC C15/C1500 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.