I changed the bulb on the passenger side dimer but it still not working.

Sounds like you need to look for a bad ground for the passenger headlight.

I had the same issue with the cheaper bulbs. Sylvania sent me some higher end bulbs and have had no issue for years. (I hope that saying that will not bring on a burn-out;)

its is not uncommon for the contacts in the sockets to become corroded or just expand to the point of where they do not contact the bulb,try to test the socket with a multimeter for voltage,if it has voltage then its most likely the contacts,which sometimes can be rebent,but replaceing the sockets is a better solution,and can be picked up at most stores or 4x4 shops and junk yards.

LOOK IN SIDE BACK INDEX OF OWNERS MANUAL IN GLOVE COMPARTMENT.LOOK IN BACK INDEX FOR BULB REPLACEMENT IT WILL SHOW YOU HOW TO REPLACE HEAD LIGHT LOW BEAM BULB.DONT TOUCH HALOGEN WITH HANDS BECAUSE OILS FROM HANDS WILL CAUSE HALOGEN LIGHT BULB TO OVER HEAT AND BLOW OUT WEAR CLEAN GLOVES WHEN HANDLING BULBS.

Change the bulb on the passenger rear.

turn left

Try replaceing your dimer switch.

check your owners manual

i work in a garage and i can say chevy is junk, we get 10 chevys to 1-2 other car makes your best bet is to not tell any one about the problem and sell it, im not favoring any vehicle makers but thats the way it is sorry

The bulbs could be ok. That means your car has a short circuit on the left side which is causing the blowing of the fuse every time you intend to switch the left indicator.