Ambient light sensor confusion

[Mheiron]

Thanks! There’s a good u-tube video on changing them.

The photo of two sensors was blurry so I’ll have to post later.

They look identical, one on each side of the center vent.

 

[mattbta]

I gave the GM part number in post #6

 

[AndyJ-DP]

Our 2000 late model Suburban 2500 4wd LT has two sensors on the dash. According to a couple other posts the right side is the DRL ambient light sensor part 12450120 "Daytime RUNNING LAMP AMB LGT" as with the non-LT models, and the left side is a Sun Load Temp sensor part 15740822 (AC Delco #15-72446) for the auto AC system package on the LT model.

My DRLs are not turning on during the day and I suspect part 12450120 "Daytime RUNNING LAMP AMB LGT" since the DRL bulb, socket, fuse, and relay are all good.