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I have a DRL problem with 2001 Impala.

When driving in daylight and the car goes into "darkness", as in going under an underpass, the entire lighting system, including headlights and panel lights, goes haywire. In fact I can make this occur by covering the photodiode with the palm of my hand. What's gone wrong?

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  • Cars & Trucks Master
  • 33,359 Answers

The ambient light sensor connects to the body control module. In other cases of strange things happening, replacement of the BCM seems to be the solution. Might work in your case

Posted on Dec 09, 2012

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: DRL-1998 Cavalier Z24

Check your DRL relay that is located in the fuse box. Also check the connector under the battery box for corrosion. (Not a smart place to put a connector) GM really messed up with the wiring on the 98-00 cavaliers headlights.

Posted on Nov 01, 2008

ltfrc
  • 227 Answers

SOURCE: DRL

Most DRL's are controlled by a relay. The relay malfunctions after a while. Need to go to the dealer and purchase a DRL relay. Once you see what it looks like open hood and match it to the bad one, then replace. If you can not locate it the library has mechanical books for you make and model to look up location of the drl relay.

Posted on Jan 19, 2009

SOURCE: 1999 GMC Suburban DRL Work - Headlights/Highbeams Do Not

go to autozone the can help you if you have one they do a lot of things fore nothing including clearing codes

Posted on Feb 21, 2009

  • 462 Answers

SOURCE: 2001 Impala Traction Activates unnecessarily

THE SPEED SENSOR IS LOCATED INSIDE THE HUB ASSEMBLY. THE TWISTED WIRES GOING TO THE SENSORS ARE PROBABLY AT FAULT. THE WHEEL SPEED SENSOR HARNESSES ARE AVAILABLE THROUGH A DEALERSHIP.

Posted on May 24, 2009

  • 580 Answers

SOURCE: 2000 Grand Am SE Headlights and Tailights Stay On

Start by setting your auto headlight switch to off if this solves it replace your headlight switch If your car is equipped with daytime running lights there could be a short bridging them with your auto head lights look for broken or frayed wires do this also if you have installed or had someone install an aftermarket stereo or speakers/sub woofer, amplifier. Good Luck with this

Posted on Jul 09, 2009

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1 Answer

I have a 2002 impala, when my daylight driving light come on my dash lights go out. Suggestions of possible causes?


DRL - day time running lamps , lets get this stright , When your daytime driving lights are on the dash lights go off . An it's daytime ? If it were night an the regular headlamps were on are the dash light's on then ? Becaused if the daytime running lamps are on an it's day time , why would the dash light's be on ? You wouldn't need the dash lights in day time light conditions . No problem !

Nov 01, 2016 | Cars & Trucks

1 Answer

Where is the DRL relay located?


There is no DRL relay , has a lamp control module .
The daytime running lamps (DRL) activate under the following conditions:
?€¢
The ignition switch is in the RUN position.


?€¢
The ambient light sensor indicates daylight.


?€¢
The vehicle is not in the PARK position.

When the above conditions are met, the lamp control module (LCM) supplies battery positive voltage (B+) to the low beam headlamps through CKT 589 (GRY), the DRL resistor, and CKT 12 (TAN). The DRL resistor reduces the voltage supplied by the LCM. The low beam headlamps light at a reduced intensity. The DRL disable if the vehicle is placed in the PARK position. When the ambient light sensor indicates darkness, the low beam headlamps automatically switch from a reduced intensity to a regular intensity.
Lamp Control Module (LCM)
In the center of the IP, below the center heater outlets

Nov 17, 2015 | 1998 Oldsmobile 88

1 Answer

I have a 91 Toyota Mr. The parking lights, tail lights and daylights wont come on. They run off the same fuse underpass. The bulbs and fuse are good. What could be wrong?


Replace the day time running light module. Early years are a separate module. Usually they are on the driver side under the dash. These can be bypassed..Find an electricial that works on cars.

Sep 14, 2014 | Cars & Trucks

1 Answer

The lights on my Jeep are not turning on automatically anymore ,what could be the cause of that


is this the dark sensor failing?
or the DRL features failing?
we cant know that,?
on one usa car is a dark photos cell filty. clean it.
on one Canada car with DRL , its issues with that.
DRL is manditory in some countries. Daylight Running Lights.
got DRL? and is always the first question.

Mar 05, 2014 | 2006 Jeep Commander

1 Answer

How to turn off daylight running lights


Check the fuse panel, you should have a switch there...
What model is?

P.S - in some countries the drl is mandatory, you could be fined if drive without drl on

Feb 26, 2014 | Volkswagen Golf Cars & Trucks

2 Answers

Daytime running light module location 2001 impala


The daytime running lamps in your 2001 Chevrolet Impala are controlled by the Body Control Module (BCM) Here is a description of how the system works:

The ambient light sensor is a light-sensitive transistor that varies its voltage signal to the Body Control Module (BCM) in response to changes in the outside (ambient) light level. When the BCM receives this signal, the BCM turns ON either the DRL or the headlamp relay for auto headlamp operation. Any function or condition that turns ON the headlamps will cancel the DRL operation.
Thirty seconds after you start the ignition with the headlamp switch set in the OFF position, the DRL will perform one of two actions:

Illuminate the high beam headlights at a reduced intensity in daylight conditions
Illuminate the low beam headlights in low light conditions
The DRL/EXT lamps fuse in the top of the engine fuse block supplies battery positive voltage to both the DRL switch contacts and to the DRL relay coil. When the BCM energizes the DRL relay coil, current flows through the right high beam lamp, to the left hand high beam lamp, to the energized DRL relay switch contacts, to ground G101.
The high beam headlamps are now in series, and split the voltage so that the headlamps illuminate at halt intensity. The DRL operates when the ignition switch is in the RUN position, and the parking brake is not set or the transmission is not in park. When these conditions have been met and the ambient light sensor indicates daytime conditions, the DRL will illuminate.

Oct 10, 2011 | 2001 Chevrolet Impala

1 Answer

How do you disconnect the daylight, lights?


This is hard to explain without pics, but I will give it a shot: Just under the the steering wheel is the DRL (daytime running lamps) with a big white connector inserted into the backside of it. This connector has many wires. You need to locate the black/yellow wire. Cut the wire, and insert a swtich in between the two cut ends to enable/disable the DRL. This link has a great how-to instruction

Procedure:
Cut the Pin 12 Black/Yellow Stripe wire to disable the DRL "circuit"
operation. A switch can be installed inline between the two separate Black/Yellow Stripe wires for manual DRL operation if desired.

I just did mine over Christmas and it works with no problems.

Mar 16, 2010 | 2001 Toyota 4Runner

1 Answer

How to disable the DRL on my 05 impala


if you jump the emergency bake light switch located in the back of the e brake pedal the light will stay off.

Nov 01, 2009 | 2001 Chevrolet Impala

1 Answer

2003 Chevy Impala daylight running lamps turning off on their own


normal condition lamp sensor on top of instrument panel turns lamps on and off with lighting conditions when headlamps are on dash lights are on whwn drl,s are on dash lamps are off

Oct 02, 2009 | 2002 Chevrolet TrailBlazer

1 Answer

Dash lights go off intermittently


I'm no expert, I recently purchased a 2003 vibe. I noticed the automatic headlight's sensors can be super-sensitive, about an hour hours before dusk they'll kick my headlights on (when the sun is still shining!), or sometimes when I go into an underpass, and then sometimes they'll realize it's light enough and turn themselves off. This would cause your dash lights to go to the 'headlights on' mode and turn the headlamp signal on, the intensity is controlled by the dimmer/dome light control on the left side of the dash. Check to see if the dimmer is down too far, as this could cause the lights to dim when the automatic headlights turn on. It's also possible that the dimmer is not working, thus no power is getting to the dash lights through the dimmer. Try testing it by starting the car in daylight, then manually turn on the headlights, then adjust the dimmer. Like I say, I'm no expert, just guessing because I've noticed it happen similarly on my Vibe, but my dimmer was at half-way, as I like it for night driving. Someday, I'd like to disable the automatic sensors and DRL.

Jun 04, 2009 | 2003 Pontiac Vibe

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