On my 02 chevy blazer my high beam wont work on the driver side. i changed out the bulb twice and it still doesnt work .do u know what it coul be

You need to first establish that you have current to the headlight in question. With it being so flaky in how it is working I would bet that your connector is bad at the light. Grab a meter and see if you are getting your 12 volts to the connection. Cleaning it out may help you for a while.

check for a damaged wire for the low beam. Also wouldn't hurt to check the ground wire as the high beam will try and ground through the low beam but not visa verse

I know this website www.reliable-store.com that i get manuals from, and they have all models online that solve all simple/technical problems like professionals

I also brought for my 1989 BMW, such old model, they had it and it was very good manual. Go ahead, I bet.

Check for 12VDC at the connector with your high beams on. Could be the wiring or the connector and no they run on the same fuse.

You should check your fuse panel(s) for the low beam fuse. Sometimes there are separate fuses for the drivers side vs passenger side

Check the headlight relays- your owners manual will show you where they are.

Change the bulb. High and low beams are separate bulbs located in the headlight housing. Im not sure on the 07 but the earlier design Yukon (02)you have to pull out a pin located under the hood on the top of the light housing in order to remove it.

maybe a fuse the fuse box is under the drivers side passenger seat . sometimes ive seem them get something spilled on them and i had to wiggle the fuses to clear the corrosion

I assume you have changed the bulb?

you should be able to access those bulbs from inside the engine compartment... you will likely have to remove the battery if it's on that side... the connector generally turns about a quarter turn to remove it. do not touch the bulb itself as that will shorten it's lifespan.

Robert

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