Used 2007.5 Gmc Sierra 2500 hd Duramax for sale in Durango, CO

Sierra SLT 2500 HD 4x4 287k miles fully loaded rear helper airbags $4,000 Fab fours heavy duty front bumper ,5th wheel gooseneck ,6 inch Cognito lift kit, Cognito upper control arms, Cognito driveshafts, Cognito heavy duty steering components , Factory backup camera, navigation system , heated steering wheel and leather seats, new rear Ranchero shocks sliding rear window Rhino liner heavy duty aftermarket transmission cooler ,new windshield ,halo headlights, DPF delete EFI live 4092 Rudy's Turbo ,Fass fuel system ,EGR Delete, 2 new batteries this has been my work truck for the last 10 years no expenses have been spared OEM Factory heavy duty Parts new U-joints slip shaft.....now the problems gas gauge has never worked correctly runs out of gas at 1/4 tank 1 rear air bag leaks a little bit ,steering box needs to be replaced, I have heavy duty brand new steering box in my garage needs front end alignment otherwise it is rip-snortin and raring to go
the tires Nitto EXO Grapplers have 8k miles on them