2019/2020 Silverado OEM Fog Light kit

[GravelPitsYew]

I just bought the OEM fog light kit for 2019/2020 SIlverado. From the kit, if I install the new dash buttons module in the cab, install the wiring/harness and I don't go to dealer right away to flash the BCM portion, will the newly installed dash buttons work right away (minus the fog lights button)? Wondering if I'll still be able to run the new headlights button to drive at night until I take the truck in to the dealer to do the BCM flash. Basically, I want to install myself and take to dealer at my convenience, but also drive at night in the meantime. 

Second question, do the fog lights work right after install without flashing the BCM (as in, is the BCM flash only to get the dashboard cluster light to start working), or no (the BCM flash is what gets the lights + cluster to work)? 

 

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[Josh11]

On 6/12/2020 at 1:22 PM, GravelPitsYew said:

I just bought the OEM fog light kit for 2019/2020 SIlverado. From the kit, if I install the new dash buttons module in the cab, install the wiring/harness and I don't go to dealer right away to flash the BCM portion, will the newly installed dash buttons work right away (minus the fog lights button)? Wondering if I'll still be able to run the new headlights button to drive at night until I take the truck in to the dealer to do the BCM flash. Basically, I want to install myself and take to dealer at my convenience, but also drive at night in the meantime. 

Second question, do the fog lights work right after install without flashing the BCM (as in, is the BCM flash only to get the dashboard cluster light to start working), or no (the BCM flash is what gets the lights + cluster to work)? 

 

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1 yes the new switch will work so your headlights function normally

2 no the fog lights will not work until after the bcm has been flashed

[GravelPitsYew]

Thanks for reply. 4 closest dealers want $180-225 for the BCM flash. Gen5diy asks $165 for the diy "off high beam" harness...so dealer sounds like a better option.