The squeek is unusual. At a slow speed over speed bumps, it doesn't squeek, but it does, rolling on an average road. The crazy part, is that it seems to be coming from the firewall area at the top of the transmission. Could that be the engine mount that was temporarily removed to change the alternator?
2007 XK, 60,000 miles. Upper control arm and right tie rod changed historically. Suspension inspected by wheel alignment staff this week.
*noise

 

Please create a signature that includes your X150's model year, engine (normally aspirated or supercharged), body style (coupe or convertible), and other distinguishing features. Your Public Profile was no help. How many miles? Have any bushings ever been replaced?

 

There is a control arm without a ball joint called a Front Lower Rearward control arm. I wonder if it could the source of the squeek?

 

They didnt replace the motor mounts when replacing the alternator.

Had that plus belts and all pulleys...at 70,000 miles..

All labor not duplicated..

 

As well, I had them change the pulley, tensioner, strap and water pump. I have a trick for squeeky bushings. But it will be hit and miss approach.

 

The follow up.is that I went for a drive to cottage country. It gave the brakes and the transmission a work out. Then I put on a new set of tires, closer to the original diameters of 100 or less. Bushing squeek has now departed! So now onto other annoyances.

 

I am now hearing a loose ball joint on the left side over small bumps. With other cars it was the sway bar links that went first and the wheel aligner said my left tie rod end was good. The new link should get a new M10X65mm bolt and nut.