We are trying to remove the lower control arm (passenger side) of a 2006 pontiac G6 we got the front bolt loose and most of the way out but it refuses to come all the way out so that we can get the arm off, there is a box of some sort that is keeping the bolt just millimeters in the socket and we cant get that off, and also do we have to remove the sway bar as well to get it off? we have the car in a position to where we cant even drive the car to take it to a shop. we have the part that we need the only thing that was wrong was that the ball joint was bad but they make you replace the whole arm. we need to get this fixed because we are down to one car and we need 2.
I had same problem with my 2006 G6 GTP 3.9 Engine. The front control arm pivot bolt would come out only so far and then hit the passenger side motor mount. I had to loosen the two (2) motor mount nuts from below, and then raise the engine and trans so that the pivot bolt could be moved forward enough to pull clear from the control arm. The control arm drops down, so that the sway bar does not have to be loosened or removed. Expensive part !! (lower control arm with ball joint), just to replace a failed ball joint. By the way, I have the "official" GM ZP/ G6 service manual, and it mentions Nothing about the motor mount interference problem. But, without clearing for that motor mount, that front bolt cannot be removed. (I don't have any experience with the 4 Cylinder G6 model, so can't help you there.)
The usual way to get that bolt out is to loosen the bolts that mount your k or h frame ( The frame member that the control arm is bolted to ) And allow it to drop a small amout to clear the bolt, but this is a tough maneuver because your steering, suspension, and generally 2 motor mounts are also attached to this. If you try this make sure you support the engine in some way and have everyone and everything clear of the area. Let me know if this helps :)
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The lower control arm is a two-piece welded unit with a riveted ball joint. A conventional rubber bushing is used for the rear lower control arm pivot. The front lower control arm bushing is mounted vertically.
REMOVAL AND INSTALLATION
Some special tools are required to perform this operation including, a front hub spindle removal tool and a suitable ball joint separator tool.
WARNING
Do not hammer or pry ball joint from knuckle. Failure to use recommended tools may cause damage to the ball joint and seal.
See Figure 1
Fig. Fig. 1: Exploded view of the control arm-to-frame mounting
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