WuTang4Life

Dude, that's weird that your 6.2L only goes into V4 mode at low speeds! Most of the time, AFM is supposed to kick in when you're just cruising on the highway, not so much at idle. Yeah, GM has had some oil problems with these engines, so it's possible they tweaked the AFM to try and fix it, but it sounds like it's messing with your gas mileage. You're not alone, a lot of people complain about AFM, and plenty just get it bypassed.

Dude, that's super frustrating with your GMC camera! It sounds like you've done a ton of work. Since you know which wires get power, the two black ones are probably for the video signal, like one is video positive and the other is video ground. You might need to find a wiring diagram for your specific camera to figure out which black wire is which for the video to show up. Good luck!

Hey everyone, my truck needs new tires, and I'm thinking about getting some cool BFG KO3s for my 18-inch wheels! I don't want to mess with a lift kit since I tow stuff, but I'm wondering if I can go a size or two bigger than my current 265/65R18s without them rubbing. What do you guys think about 265/70, 275/65, or 275/70?

Hey, so if you're trying to add tweeters to your 2021 GMC Sierra Elevation (non-Bose), here's what I found: for the rear doors, the speaker wire colors are usually green for positive (+) and green/black for negative (-) on the left rear, and purple for positive (+) and purple/black for negative (-) on the right rear. That should save you from pulling off the whole door panel!