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I have no idea what it is but the sound and vibration is coming from under my left foot.

Almost seems like it's on the wheel, bearing or axle because the tone increases with speed, (not throttle).

Sound seems to reduce when making left turns. (???)

It's most heard when I'm doing about 50 - 70 km/hr.

I'm thinking wheel alignment or bearing?

I have no clue...

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Do you feel this driving at speed or accelerating? If you get it driving at speed, try doing S-Turns like race car drivers do to warm their tires see if the noise comes and goes, if it does it is probably a hub bearing.

If you get a graininess or vibration under your foot on acceleration check your engine mounts, especially the front one but look at all of them.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Do you feel this driving at speed or accelerating? If you get it driving at speed, try doing S-Turns like race car drivers do to warm their tires see if the noise comes and goes, if it does it is probably a hub bearing.

If you get a graininess or vibration under your foot on acceleration check your engine mounts, especially the front one but look at all of them.

Noise gone on left turns and is with speed not acceleration or throttle.

At idle I hear nothing...

Thanks BBF!

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It sounds like a hub bearing.. Someone here will help you to determine which one it is, I get confused. Not sure if you turn left/right and the noise goes away which one it is. Someone here knows.

I made a mistake, it sounded like it was coming from the passenger side, I replaced it noise was still there, it was the driver side hub bearing. Now both my hub bearings are new

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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I've read a bunch of threads about wheel hubs. Generally speaking, if you get noise while turning to the left it's the right bearing because turning to the left puts load on the right side. That seems to be the general diagnosis, but I've seen two threads where it was the opposite wheel hub.

WARNING: I'm a total car newbie, don't be surprised if I ask a stupid question! Just trying to learn.

Cheers!

5% discount code at RockAuto.com - click here for your discount!

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It the left bearing. A left turn loads the right bearing and unloads the left, thus if the noise decreases or goes away on a left turn, the left bearing is the offending one (9 out of 10 times). A right turn should make it louder.

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It the left bearing. A left turn loads the right bearing and unloads the left, thus if the noise decreases or goes away on a left turn, the left bearing is the offending one (9 out of 10 times). A right turn should make it louder.

I just did another test, and yes it does get a little louder turning right.

It's very loud cruising at 60kmph going straight.

How much does this generally cost to fix?

How much longer can I be driving like this?

Thanks guys!

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Well I drove mine for over a year like that. If you can turn it and the sound goes away or lessens you can be sure its a bad hub bearing. It is an annoying noise and yes, it happens going straight also.

It is really not a hard job to do yourself, you will need some special tools like a 33mm or 34mm socket, torque wrench, torx sockets, etc. Some members have used pullers but I both don't see the need nor did I need one, it basically FELL out when I removed the bolts. I have a thread someplace with photos.

I have not bought one recently, but Rockauto has them ranging from $100 to $260, not sure what the differences are, check them out, Mike

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Well I drove mine for over a year like that. If you can turn it and the sound goes away or lessens you can be sure its a bad hub bearing. It is an annoying noise and yes, it happens going straight also.

It is really not a hard job to do yourself, you will need some special tools like a 33mm or 34mm socket, torque wrench, torx sockets, etc. Some members have used pullers but I both don't see the need nor did I need one, it basically FELL out when I removed the bolts. I have a thread someplace with photos.

I have not bought one recently, but Rockauto has them ranging from $100 to $260, not sure what the differences are, check them out, Mike

Thanks a bunch for the info Mike!

:D

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