I have a 2026 2500 HD Ultimate. My phone app says there’s a software update available. It’s something about improved battery management and something to do with the running boards. I follow the instructions for the update but the “Check for Updates” option is greyed out in my settings menu. Has anyone else seen this? How did you resolve it? The help message just says “see your dealer” if the download doesn’t work. I’m just trying to save a trip.
Fuel mileage? That's all how you use your right foot. Exhaust will give you sound.
Stock exhaust 5.3 is 2.75" diameter piping.
If the truck is nice and worth putting some $$ into it, I'd go for a Corsa catback. I had one on my 2019 old body 5.3 and it was just perfect. Zero drone, just driving around and cruising on the highway you'd think it was stock, but when you opened it up it was like a Camaro with the factory dual mode. Corsa bumps their catback to 3in diameter.
First brands was the holding company that owned Champion Labs and Fram, + many other auto parts companies. Those brands are not making filters anymore.
Premium Guard Inc. (PGI) acquired the intellectual property for both FRAM and Champion Labs. Premium Guard is a similar company as Champion Labs was.
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