Q: How often should the hinges and latch assemblies on the doors, hood,Liftgate and trunk be lubricated on Chevrolet Equinox and GMC Terrain?
A: After every 3000 miles or at least once in three months, you should add some light oil or lock lubricant on the hinges and latch assemblies of your doors, hood, trunk or liftgate. To prevent wear and tear and ensure smooth movement, lightly apply grease to the door latch strikers. Use a graphited lubricant spray to grease the locks of car doors as well as trunks (or lift gates).