08 Trailblazer SS. Low beams go off when I switch to high beams?
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2Welcome to Motor Vehicle Maintenance & Repair.Your question is not clear.can you please elaborate bit more– DhKoSep 20, 2017 at 14:01
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2Low beams are supposed to go off in all vehicles when switching to main beam. What exactly is your question?– ChenmunkaSep 20, 2017 at 14:06
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lows don't always go off... mine stay on as they are the outer ones.– Solar MikeSep 20, 2017 at 14:14
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Low beams stay on on my vehicle with H4 bulbs– r.andersonSep 20, 2017 at 14:30
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It depends on the bulb type, design of the lighting solution as well. Low beam uses a separate bulb and high uses a separate bulb in the 2008 Chevy TB. When engaged to high, both should remain 'on'. There is an underlying cause preventing this function.– Lawyer AidroosSep 21, 2017 at 10:56
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1 Answer
It is probably the bulbs you are using. Low beams should be dual filament. If you are using single filament (or circuit for led) they will turn off.
