How to Replace Idler Arm 2000-06 GMC Yukon

You want to keep in mind when you're doing this job, after you're done, you're gonna want to go to a local garage and have the vehicle aligned so you don't have premature tire wear.

Just take this cover off. Use a 15-millimeter socket. There's two bolts in the bottom, two on top. Sometimes there'll be a third. Slide it off. Take this cotter pin out. Just use some side cutters and pull that up. Just gonna use a little rust penetrant. It's a little rusty. Take a 21-millimeter socket. Take this nut off.

Now, I want to separate the idler arm from the steering bar. I'm just gonna use a front-end tool. There's many different tools you could use to get this off. Just tighten this up. Put the nut on just so my tool doesn't slip off the stud. It's just gonna use it as a guide.

Another way you can try to do this is use a pickle fork. There we go. Slide that up. I'm going to take these two bolts out. I'm going to use a wrench, a 21-millimeter wrench backside to hold the nut. Use a 21-millimeter socket on the bolt. Take both of those out. Pull the bolts out. Let me just grab the whole idler arm assembly and you just slide it off.

If you're gonna replace just the arm or just the assembly, you're gonna have to separate it. So use a 24-millimeter socket. It helps to put it in a vise and then you can use a puller and separate these two just like that. And take the arm, put the new nut on. Just snug that up tight. All right, just line this up.

I'm gonna have to tap this in place. That's good. Before you put the bolts through up top, just make sure it's going through this bar right here. Put the bolts in, take the two nuts. Get them on the back side. Now, snug these up. Torque to 74 foot-pounds. And take the castle nut, install that there, tighten it up and torque this to 46 foot-pounds.

If the hole didn't line up, you can just tighten it up a little bit more so you can put the cotter pin in. Slide the cotter pin in, and just bend one of the tabs over and trim the excess. Take this shield, install it bolts, put the back in, and tighten these up.