Yes...because GM is an ****. They want to charge you an additional $100+ to have them programmed on top of the $200+ cost of the kit on a truck that should have come with them in the first place.
They are LED
I noticed a connector in mine.
The one under the hood had me all kinds of confused. Like do I run the wire up underneath? Plus what I had taken apart, didn't look like the diagram.
I'm having a vibration when slowing down. It's the worst at 30mph. I guess I'll try and rotate the factory shim. Never had a problem on my previous trucks.
I've got everything done on mine but connecting the wires to the 2 fuse boxes. The instructions are confusing to me and not very clear.
I guess I'll have the dealer connect the wires when they program it.