Wow! $11,000 for a 2005 and only needed tires (about $1,000-$1,200) is insanely cheap. About half of NADA!
Last November when we were looking for a used 2004-2006 GM D/A 2500 CC LB 4X4 for our grandson we only found 2 in Michigan. One was a 2004.5 GMC D/A ext cab LB 4X4 no bed liner with 148,000 and the listed price was $21,995 on the east side of the state. The other was a very clean 2005 Chevy D/A CC LB 4X4 sprayed in Rhino with 155,000 and the listed price was $24,999. It was in the middle of the state near Lansing and our grandson (northwest of Detriot) called them and was told it was sold. Didn't tell him what it sold for but had to be well over $20,000. He later found a 2009 like he wanted with 63,000 he liked and even the color and bought it but it was more money of course. He works for a Ford dealership in the body shop and he's really good at body repair as it's his love after his wife and son.