Question about 1999 Chevrolet Tahoe

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97 gmc yukon daytime running lights

How do you turn off the drl.

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  • deetrkg Feb 02, 2009

    hello i tried that but still the running lights come on.the fuse inside the truck.

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U have to check your system correctly. If your problem is turning them off, u first have to check the relay that is located in the convenience fuse bank (Inside on left side of dash) and if ok then its the module....

Posted on Mar 28, 2009

  • bigjam1963 Apr 06, 2011

    where the module located at

  • bigjam1963 Apr 06, 2011

    my runing light will not come on when i trun the key on

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Hi the only way i know is to remove the fuse.other than that they cannot be turned off as this is a safty feature that was made standard on many cars and trucks.

Posted on Feb 02, 2009

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1 Answer

1999 GMC Yukon headlights will not turn off. These are not daytime running lights. I manually turn them on and off. Now in the off position they remain on. Had do disconnect my battery to turn off.


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I need clarification on 2003 Chev Malibu DRL problems:


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Daytime Running Lamps (DRL)
The ambient light sensor is a light sensitive transistor that varies its voltage signal to the body control module (BCM) in response to changes to the outside (ambient) light level. When the BCM receives this signal it will either turn on the daytime running lights (DRL) or the headlights. Any function or condition that turns on the headlights will cancel the daytime running lamps operation. With the headlight switch in the OFF position, the headlights will either be turned ON or OFF, after an approximate 30 second delay depending on whether daylight or low light conditions are sensed. The HTR A/C IGN fuse in the underhood junction block supplies ignition positive voltage to the daytime running lamp (DRL) relay coil circuit. The DRL relay switch contacts are connected to the low beam circuit. When the headlamp switch is placed in the OFF position, the BCM will either turn on or off the daytime running lamps, depending on whether daylight or low light conditions are sensed. The BCM energizes the DRL relay, closing the switch contacts and grounding the low beam circuit. Ground is provided at G101. The DRL illuminate the low beam headlights at a reduced intensity. The DRL will operate when the ignition switch is in the ON position, the gear selector is not in the PARK position and the parking brake is released. When these conditions have been met and the ambient light sensor indicates daytime conditions, the DRL will illuminate.

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1 Answer

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1 Answer

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2 Answers

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DeViouS Tuning

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1 Answer

Day time running lamps


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