1987 GMC V2500 6.2L V8 DIESEL. 1987 GMC V2500 4.8L 6 Cyl. 1987 GMC V2500 5.7L V8. Notes: Radiator Cap -- Safety Lever; 16 lb. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.