Question about Cars & Trucks
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?
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
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
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
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
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
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
Tips for a great answer:
Nov 01, 2016 | Cars & Trucks
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
Sep 14, 2014 | Cars & Trucks
Mar 05, 2014 | 2006 Jeep Commander
Oct 10, 2011 | 2001 Chevrolet Impala
Mar 16, 2010 | 2001 Toyota 4Runner
Oct 02, 2009 | 2002 Chevrolet TrailBlazer
Jun 04, 2009 | 2003 Pontiac Vibe
30 people viewed this question
Usually answered in minutes!