1994 GMC Jimmy. I replaced the upper ball joints and the sway bar - for 2 days the car didnt squeak. Now it is louder than before. Whats next?

The OEM ball joint is riveted into the upper control arm. There are two possible ways to replace the joint. You can purchase the entire upper control arm/ball joint assembly, which comes complete with the upper control arm bushings. This part costs about $150.00. You will also have to deal with the coil spring when replacing it this way. You can also buy just the ball joint for about $30.00. This will require that you drill out the rivets of the original ball joint and then bolt in the replacement with the bolts that are provided with it. The 2WD and 4WD versions are the same. See this link.


http://www.autozone.com/suspension-steering-tire-and-wheel/ball-joint-upper/gmc/sonoma-4wd/1994/6-cylinders-z-4-3l-tbi

IF NOT TRY SWAY BAR BUSHINGS

check your rotors

Replace upper control arms and/or bushings and lower ball joints. Lube the sway bar bushings and end links real good with a sprayable grease. Not WD-40, that stuff rinses of with just water.

You would need to take the suspension apart carefully because the spring/torsion bar has tension on it. The factory upper ball joints are riveted so you will need something to cut the rivets off. The aftermarket joints simply just bolt in.

Did they replace the upper strut bushings.
I can't recall doesn't this vehicle have strut rods and naturally strut rod bushings.

the ball joints are dry along with the rubber bushings in the control arms they need to be replaced

The sway bar bushings are under the large clamps that hold the bar to the frame. The ends of the sway bar are connected to the struts by the sway bar links. When the links wear out, they clunk--not squeak. The bushings are under the retainer in the pic below.

check body mount bushings if just a little loose will cause to squeek.

Check the condition of the sway bar bushings.