paauto

Here's a photo of my homemade custom bracket. I'm in the process of priming/painting/undercoating it and will post a pic shortly of the final beast.

MBRP is the way to go.

Yep - sounds exactly like my predicament although i did have the factory boards and brackets to work with. Never heard back from Westin so I got the angle grinder w/ a cutoff wheel out and modified the factory bracket along with the Westin bracket - Frankenstein'd it!. I had a local guy weld it up for me on Thursday. I need to clean it up and paint it and will post a pic before i throw it on the truck.

I bought the same nerf bars / drop steps for my '17 HD. Purchased directly from Westin a few weeks ago. First off, the installation instructions are just plain wrong. The diagrams and illustrations are inconsistent as it relates to references to part numbers and how & where to install the brackets. To top it off, the brackets are also mis-tabled. It's as if someone purposely put the wrong labels on the brackets to get their jollies. I tossed the instructions and went by the seat of my pants. First thing I did was to pull the factory boards off. No need to drop the DEF tank to remove the two front brackets on the passenger side. As explained in earlier posts, they're a different design than the other factory brackets. Anyway, installation of the driver side Westin board was straight forward. Passenger side not so much. There is no way any of the Westin brackets will fit next to the DEF tank, even if you took it off. I sent a note to Westin customer service to see if there is a different bracket for the HD. Haven't heard back yet. If they don't offer a solution, I believe i can cut up the factory and Westin brackets and weld a custom one together.

Might want to try some dielectric grease on the pins to keep corrosion off.

I installed on mine and yes, the new trim has the appropriate hole for the sensor.

drop shackle the back to level then you don't have to worry about the front end geometry.

I believe there is a camera on the windshield behind the rear view mirror that is used for lane departure. May be that camera.

If you haven't already connected the side step lights somewhere else, you can always tap into the hitch wiring harness at the back of the truck behind the bumper.

This should help https://www.gmpartscenter.net/auto-parts/2017/gmc/sierra-2500-hd/denali-trim/6-6l-v8-diesel-engine/body-cat/bumper-and-components-rear-scat

I finally got around to adding a 10k ohm resistor to the positive feed for the new LED. Here was the issue. When the dusk sensor kicks in it sends 5 volts to the positive lead (the white lead) in the transfer case shift knob harness. Even if the knob is in 2HI, the ground circuit for the 4HI indicator closes and allows current to flow. I suppose this is to provide some backlighting in the factory knob. Anyway, this was dimly lighting up my new LED even if in 2HI at night. The 10k ohm resistor reduces the current, significantly dimming the LED at night in 2HI. When in 4HI, all is good as the system sends 14 volts which allows the new LED to light brightly.

Thanks! Bought thru an online GM parts store - can't remember which one. It's the Intellihaul system. I tried the front camera on the grill at first but it wasn't giving good visibility right in front of the truck, that's why I lowered it. I'm in PA and we don't have front plates, so I was able to modify the front bumper plate filler and install the camera there. Kinda of a PITA to install, but I learned a lot of tricks that will help the next guy. I'll write them up when i have time.

Here are the speaker wiring schematics for all the trucks by RPO. I'm only seeing dedicated subwoofer wiring for UQG and UQA RPOs. Page 1.pdf Page 2.pdf Page 3.pdf Page 4.pdf

Went with a Pioneer TS-WX130DA Powered Subwoofer. Purchased it from Crutchfield. I hooked up the feed using the factory subwoofer feed. The blue/black lead is the +.

Not sure of exact size, but they are part number 11589293 if you need to buy some more.