01 Stock Fog Lights Wont Switch On!?!

aftershock00 · February 5, 2008

This problem is beginning to frustrate me. I bought an 01 silverado 2 months ago. Only one fog light was on it because the owner said the other one cracked and he never got around to getting a new one. The existing fog light didnt work but i thought it may need both lights hooked up to work. I bought a new fog light and when i connected everything i still had no fog lights working. I then pulled out the relay and guess and tested jumping the 5 holes. Doing this got them to light up. So i concluded it is either a bad relay or a bad switch. I put a new switch in and still nothing...i tested the wire that plugs into the switch and i had voltage going through it. I then said ok, it must be the relay. Well i just put a new relay in and still nothing. From what i can tell, there is one fog lamp fuse and it is next to the relay. I checked that and its fine. Im out of ideas. Does the car have to be in drive for them to go on or some weird thing like that? Any tips for how to correct or even to diagnose this problem would really be appreciated.

This is an 01 silverado 5.3L Z71. Btw, it has an alarm/remote start. I just thought i should mention that. Thanks.

Lincoln30 · February 5, 2008

When the headlights or parking lights are on and you press the foglight button does the amber indicator light up on the switch???

Did the PO add the foglights or did they come from the factory??? I ask b/c if you add the OE foglights after the fact the BCM must be programmed by the dealer to enable the switch to function.

aftershock00 · February 5, 2008

When the headlights or parking lights are on and you press the foglight button does the amber indicator light up on the switch???

Did the PO add the foglights or did they come from the factory??? I ask b/c if you add the OE foglights after the fact the BCM must be programmed by the dealer to enable the switch to function.

No, nothing lights up.

What is a PO? Im not sure if the original owner had them installed afterwards. They are definately factory style stock foglights. I would imagine they were from the factory because its a z71. I dont have leather but i have heated mirrors...i would assume i would have fog lights tooo.

I dunno....keep the comments coming. THanks