I ran a tank of LSD and got the dreaded P2262 code!
After switching back to USLD Code went away!
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08 Laramie 2500 6.7 6spd auto,PPE/PWR Puck Stack! Recon Smoke Cab & 3rd Brake Lights.
35 BFG's XD's, S&B, 4.5 FabTech, Century box cover. BW Flares.Window Tint. 5.5 Exh.tip. EGR Unplugged!