Fits my 2009 2WD Silverado crew cab perfectly. The speed sensor wire came with attachment clips so I didn't have to worry about saving the old ones when I removed it. Followed this video for instructions on how to install it. https://youtu.be/WlBpz-Kwfmc You'll need a 15mm socket to remove the three bolts holding it on. I hit them with some penetrating oil the day before and didn't have a problem removing any of the bolts or T30 set screw in the rotor. Used a T30 impact bit and 12 volt Dewalt impact driver for the set screw and pneumatic impact gun for the other bolts. I did have trouble getting to the top bolt with my deep socket and impact gun. Luckily I had the whole front end of the truck lifted so I could turn the wheel assembly back and forth to get to the back bolts. Another tip is once you unbolt the brake caliber to zip tie it up to the coil spring so it doesn't fall and damage your brake line.