How To Replace Rear Upper Control Arm 2007-16 GMC Acadia

Remove the wheel, and use a 22 millimeter socket. Take the wheel off. So that this wire doesn't break, I'm gonna disconnect this wire right here. Just use this pick tool. Just slide this out, right there. You can disconnect these retainers, just slide these off. That'll give me more slack. Just let that hang. That's good. Now, take a 21 millimeter wrench, loosen up right here, put on that nut, and then 21 millimeter socket, take this bolt and loosen it up. Just make sure you don't get too close to the rotor because once this bolt comes out, it is going to tip forward. There's the nut...oops, the nut and the washer. And you can push on the rotor a little bit. Try to pull this bolt out, and just slide that up.

Now, take the 21 millimeter wrench around that nut, put the 21 millimeter socket, take this bolt out. Oops. And there's the arm. Take the new arm and slide the bolt in position. And it goes on this way. If you look, there's a little raised section on that. This section's flat, where the bolts goes. Slide that in position. And put the nut and the washer on the backside. Then you're gonna snug...snug that up for now.

Put this bolt. Line this up here. Once you get that in a little bit, then grab this arm. Push this in a little bit, as you try to slide this down. If you can get the bolt to come through a little bit, then you can get this lined up. Just like that. Move it here a little more. There you go. Then you just hold this arm, and we hammer the rest of the way in. There you go. Take the washer and then the nut, put it on the end of the bolt. Just make sure the wires aren't in the way when you go to tighten this down. I'm gonna put the wrench on here. I'm gonna snug this down.

It is recommended that you replace this bolt when doing this job. We're gonna use a 21 millimeter, and I'm going to torque this with the wrench over here to 74 foot pounds. And then, the second pass you're gonna go 90 degrees. So you can put an angle meter on here, or if you don't have one, just do the best you can. All right. And then I'm just gonna tighten this bottom one down. Just snug it up tight. Now, put the tire back on. Now I'll torque these lug nuts to 140 foot pounds in a star pattern, that way it tightens the wheel down evenly. And I'll just go around again, double check.