2004 Malibu LS - Turn signals intermittent. Have already replaced signal switch and hazard switch. Still intermittent. Where do we go next?

 

Check the bulb contacts, they may need to be pulled out some to make better bulb contact.

 

This is my son's car and his father-in-law is helping him with it. I already asked if they checked all the bulbs, connections etc. He said yes, but I think I should check them myself. I hate to do it but it looks like I'm gonna have to step in & start over with the basics like you suggest. I'll let ya know how it goes. Thank you.