1990 GXE
It's getting old, and a few problems have been cropping up.
The headlight on the drivers side doesn't come on.
Passenger side is fine.
It will sometimes come on if I turn it on and off and few times.
Sometimes I have to just let it sit a day for it to start to come on.
I did change the bulb, but it didn't solve the problem.
Any ideas???

 

It's probably a broken wire somewhere along the way. Tru wiggling the harness connected to it with the lights turned on. Either it's that or a loose connection on a dirty contact.

 

Does your highbeam work on both sides?
Weird thing to try... replace your headlight switch.
It sounds like the opposite of when only the driver side headlight is on.