My low beams and day running lights went first and the brights worked.then pass. side high beam went out now both are out. all other lights work. replaced the switch that wasnt it also replaced the relay for daylamps. all fuses are good. please help Can you tell me what wires you fixed? I have the same problem and we have checked everything that we can think of.
Hi the problem is the forward light harness there are broken wires
under the hood left side about middle of the transmission on the body rail there is a black connector with about 10-15 wires diconnect it then there is a ground wire by the battery with a 10mm bolt remove then remove the left headlight then you will see the washer bottle there are 2 10mm bolts that hold the washer bottle the harness goes between the washer bottle and the body remove the bolts then very carefully pry the bottle towards the left front tire enough to pull the harness up then remove the tape and u will find most likely green powder like substance that is corroision and there will be your problem also stripp the harness all the way to the right till the relay that is in the middle of the bumper and repair all the wire spices that is 2 or 3 wires into one i use BLUE heat shirnk **** connectors then tape the harness back together and reassemble ps. your can buy the harness from a GM dealer if you want also hope this helps you
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Thank you for your help. That was the problem. Sorry it took so long but my mechanics (aka my dad and brother) have been busy. Thanks again.
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