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What makes a constant grinding noise while driving on the drivers side coming from up past CV joint 99 Alero?

I can't diagnose your car's problem over the internet, but I can offer some possible causes for a grinding noise coming from the driver's side, up past the CV joint, on a 1999 Alero:

Possible Causes:

* Wheel Bearings: Worn wheel bearings are a common culprit for grinding noises, especially when turning. The noise might be louder when turning to the left because the left wheel bearing is under more load.

* Brake Rotors/Pads: Worn brake pads or rotors can also cause grinding, especially when braking. If the noise is consistent, even when not braking, it's less likely to be the brakes.

* Suspension Components: Worn suspension components like ball joints, control arm bushings, or tie rod ends can also produce grinding noises.

* Transmission Problems: While less common, transmission issues can also cause grinding noises, especially if the noise is more prominent when accelerating or decelerating.

* Driveshaft: A worn driveshaft or a problem with its connecting components can cause grinding, particularly when accelerating or decelerating.

What to Do:

1. Inspect the CV Joint: Check for any damage, leaks, or excessive movement in the CV joint itself.

2. Listen for the Noise: Try to pinpoint the location of the noise as precisely as possible. Does it change with speed, acceleration, braking, or turning?

3. Check for Wear: Inspect your brake pads and rotors, wheel bearings, and suspension components for wear or damage.

4. Seek Professional Help: If you can't identify the source of the noise, it's best to take your car to a qualified mechanic for diagnosis and repair.

Safety:

It's crucial to address any grinding noises coming from your car. Ignoring the issue could lead to more serious problems, potential damage to your vehicle, and potentially unsafe driving conditions.