GM recommends their Multi-Purpose Lubricant, Super-Lube, part no. 12346241, or equivalent general purpose silicone lubricant. Apply any lock lubricant sparingly.
Hood Latch & Hinges
Use Lubriplate® brand lubricant in an aerosol container, GM Part Number 12346293, or equivalent. This type of NLGI #2 lubricant is commonly referred to as "white grease" and is a relatively thin grease. It is also available in small cans and can be applied with a brush.