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Gm Tech (Cam)
Gm Tech (Cam), GMC Mechanic
Category: GMC
Satisfied Customers: 1685
Experience:  GM Grand Master Technician 2007. 14 year experience.
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2002 GMC Yukon gh beam lights work but the low being lights

Customer Question

2002 GMC Yukon high beam lights work but the low being lights do not work check the bubble and is not the book what could the problem be
Submitted: 1 year ago.
Category: GMC
Expert:  Dave Nova replied 1 year ago.

Have you replaced any parts?

Customer: replied 1 year ago.
Only bulbs
Also dash lights work
Expert:  Dave Nova replied 1 year ago.

Do you have access to a test light or voltmeter?

Customer: replied 1 year ago.
tested the socket that the bulb foes in and got current
Expert:  Dave Nova replied 1 year ago.

All bulbs for high and low beam get voltage from the same source, so there should be voltage there if high beams work. Try grounding the Yellow wire at either of the low beam sockets and see if the low beam lights come on (make sure headlights are turned on). Let me know what it does.

Dave