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Daytime running lights, sometimes referred to as DRLs or DTRs, are lights that switch on automatically when your 2008 Hummer H3 is turned on and in drive. Since the daytime running lights are on whenever you are driving your H3, they are often the first bulbs to burn out. The video above shows you how to change the daytime running lights in your 2008 H3. These bulbs grow dimmer by over 20% over time, therefore we recommend changing both bulbs on your H3 at the same time, even if only one bulb is burnt out - this will allow both DRL bulbs to have the same intensity and prevent the old DRL bulb from appearing dimmer than the new one.
When you change the daytime running light on your H3, it is important not touch the glass part of the bulb with your fingers because the oil from your fingertips will cause that part of the bulb to burn hotter, which significantly shortens the life of the bulb. Some studies indicate that driving with your lights on can reduce accidents by 18 - 34%, driving with your DRLs or headlights on the day can reduce your chance of getting in an accident.
White light when you back up - yup, they burn out and you can replace them with bright LEDs2008 Hummer H3 3.7L 5 Cyl.
Small bulbs that burn out regularly - did you know you can replace these with LED lights?2008 Hummer H3 3.7L 5 Cyl.
Don't be caught in the fog with burnt out fog light bulbs2008 Hummer H3 3.7L 5 Cyl.
The burnt out tail light: classic reason for a cop to pull you over - change yours now2008 Hummer H3 3.7L 5 Cyl.
On many cars, the high beam bulb runs at reduced power during the day - check 'em and change 'em!2008 Hummer H3 3.7L 5 Cyl.
If your blinker doesn't blink, or blinks rapidly, you likely have a burnt out bulb2008 Hummer H3 3.7L 5 Cyl.