Question about 1996 Chevrolet Impala SS
Lights quit coming on automatically. I replaced optical sensor under the defroster vent but no help. There is surely a control module this sensor feeds a signal to, but where is it? Lights work fine when operated from dash panel switch.
There is a relay under the dash, on a fuse block with a black plastic cover. Usually the cover is labeled "Fuse and relay center" or "Power and relay center". Inside you'll find several large blade style fuses and quite a few relays. There are normally two or three relays associated with your lighting. In many mid nineties and up GM products, you have a relay for rear lighting, one for front lighting, and a separate relay labeled "DRM" or "DRL". You're looking for that one. This is the daytime running light relay. Odds are that relay has burnt out and needs replaced.
Posted on Feb 11, 2009
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