dale3guy

Does anyone know how to identify the left or right front upper control arm? Or rather know if there is a difference? GM has two different part numbers but they visually appear to be the same.

Thanks!

6speedsteve

Pictured is a Right 1st & Left 2nd arm, if you look at the nub circled it has a hole in it, these are not my pictures & I am at work so I cannot check my car, but based on what I see the drilled hole is towards the front of the car.

dale3guy

Awesome, thank you!

6speedsteve

I just checked my car & what I said is correct, nub with the hole is front of the car, & you are welcome.

bmackrell

Thanks,.... Just searching for this as I put my car back together.

Kubs

The arms are symmetric and can be used on either side. That hole is for the ride height sensor on F45 and F55 mag ride equipped cars. If you dont have those it doesnt matter.