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Ambient light sensor

1990dtgl98

By 1990dtgl98
in Troubleshooting & Recalls

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RACERX7775 Enthusiast

RACERX7775

Posted
Posted

Gottcha. Are the factory drl lower voltage that the actual low beams? I know my headlights come on and off all the time too. Especially since i have my windshield tinted.  But like i said before, i have hid lights so they are full brightness all the time they are on.

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daveor Enthusiast

daveor

Posted
Posted

no idea about the voltage,  Tinted windshield would make your lights go off and on a lot for sure. 

 

 

  • 7 months later...
WS6FirebirdTA00 Enthusiast

WS6FirebirdTA00

Posted
Posted

Thanks DrPool!

 

I just did this was I was incredibly annoyed there are no settings for this and my interior light would dim at 3 or 4 PM when I still needed sunglasses - suuuuuuuuuuper annoying!

 

Sunset today in my area of NC is 5:20 PM. At 5:17 PM they came on after doing this mod. About the time I say lights inside should dim, they come on shortly after. I would rather them come on a tad late and off a tad early in auto.

 

I ordered a new sensor on Amazon for $10 shipped just in case I messed up. AC Delco D1540J/13578464 is the part number that worked on my 2018 Sierra. I removed all the goop, though a little was stuck to the circuit board and I just left it. Very little was on the sensing element.

  • 1 month later...
wingsaa Enthusiast

wingsaa

Posted
Posted

So this does work well for the lighting. I did this for my windshield tint and it kept them from being on basically all the time. The only thing I would caution is it does seem to impact the automatic temperature climate control. This may be different from pickup to SUV but I can confirm that in my Yukon Denali this sensor is also part of the temperature sensor as well. I started to notice that the auto fan would be on more on cooler days after the truck would be sitting out and warmer in the vehicle vs actual outside temp. I believe the white goop in the sensor actually helps to control the rapid temp fluctuations. Think of it like skin or insulation. At any rate, I bought another sensor so I can have two... one with the gel and one w/o. I've gone lighter on the windshield tint and gone back to the stock sensor.

WS6FirebirdTA00 Enthusiast

WS6FirebirdTA00

Posted
Posted

Interesting point. It seems that could be part of the “sun load” logics from a quick search. I noticed the other day I had to bump up the heat when it was cool out. I had the sunroof open, so I assumed I got it too warm inside or too much heat on a sensor. I still don’t know where the actual temp sensor is, but seeing this post makes me wonder if it was due to the light sensor.

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