[rockit]

I used 0000 steel wool and some kind of kitchen cleaner to remove a heavy build up of water spots outside the wiper sweep on my wagon. Did wonders. Nothing else worked.
Used a scratch removal kit once on a wiper arm scratch on my old '50. Lots of elbow grease with a drill and actually caused a ripple in the glass.

 

[Excalibur]

I used 0000 steel wool and some kind of kitchen cleaner to remove a heavy build up of water spots outside the wiper sweep on my wagon. Did wonders. Nothing else worked.
Used a scratch removal kit once on a wiper arm scratch on my old '50. Lots of elbow grease with a drill and actually caused a ripple in the glass.

🥺 That can happen easily. I'll be doing mine by hand with the stuff I ordered. I tried the steel wool on another car one time and I wasn't happy with the job.

 

[Diane Ipps]

In very direct bright sun light very tiny sparkles in clusters and individually can be seen on all the glass in my car. The worse appears to be the windshield. In the line of sight I would not say that they are distracting but just a little disturbing.
The body shop said that it is not any type of overspray but appears to be some sort of imperfection of the glass. The service department is saying other wise.
The problem is the sunlight has to be bright, low on the horizon and shining directly on the glass so I have to get the car back into service under these conditions, which I hope to do today or next week. All the glass may need to be addressed but I am mostly concerned about the windshield.
I do not plan to argue with service nor Cadillac over this issue and am prepared to pay to have the windshield replace should it come down to that but first I would need to know that the new windshield does not have this issue. I did some research and it seems that this issue has been reported as being found with some other GM cars as well as with some other brands. The good thing is that the majority of the time they go unnoticed.
I am just asking other 2019 XTS owners to be on the look out and report in if you have notice the same. IMO it is things like this that has put Cadillac in the position that they are in with both the XTS and the CT6:gg:

I bought a used 2018 Lexus RX350, the windshield had same 'sparkles' in the glass, thought it was from highway use, however, it's not on the glass, it's just the glass. so i replaced it, and i got the same thing, as you said, in the low sunlight low on the horizon shining directly on the glass. Now i have to take it back AGAIN to [Safelite] ...i have never in my life had this problem with any other make/model car!

 

[Excalibur]

Adds a 'sparkle' to your drive!

 

[J. Madison]

I don’t think those “sparkles” come from highway driving.. They’re usually across every square inch of the windshield. Even though glass is known to be very hard, I think those tiny sparkles in the glass are actually tiny scratches caused by washing/drying. The windshield on my SLS is covered in those tiny scratches, and they’re only visible when the sun is facing directly, or at nighttime when opposing lights are directly shining towards the windshield.

This is residue of the diatomaceous earth used to separate the vinyl inter layers before they are laid between the two pieces of glass in the windshield. If the windshield is properly made, the autoclave (vacuum process) will bind the three pieces tightly together and the sparkle effect will usually go away. Your windshield is defective - and GM sometimes replaces them. Note: sometimes. It is a real irritant at night with headlights and in bright, low-in-the-sky sun days, especially in the hazy winter months.

 

[Excalibur]

This is residue of the diatomaceous earth used to separate the vinyl inter layers before they are laid between the two pieces of glass in the windshield. If the windshield is properly made, the autoclave (vacuum process) will bind the three pieces tightly together and the sparkle effect will usually go away. Your windshield is defective - and GM sometimes replaces them. Note: sometimes. It is a real irritant at night with headlights and in bright, low-in-the-sky sun days, especially in the hazy winter months.

Interesting reason. I've noticed this only in certain angles of the sun...mostly in the early morning when the sun has just risen. Doesn't really bother me enough to have the windshield replaced and all the inherent problems that can go along with that. I wonder if the replacement GM windshield might have the same defect.

 

[ELDORADO2K]

I can’t quite remember how exactly those tiny scratches on the windshield of my old Seville looked… It’s been years since I had that car.

But I recently deep cleaned my glass shower door and I had to use fine steel wool along with McKee’s Glass Restorer as nothing else I tried would work. It did work, I’m happy with the results, however the glass is so clear now that if you look close enough you can spot tiny hairline scratches, mostly in the high traffic areas that have been hit with the squeegee for years. Those scratches were there before the steel wool, but my OCD is kinda wondering if I instilled some of them.

 

[chazglenn3]

I doubt that steel wool can scratch glass.

 

[ELDORADO2K]

I doubt that steel wool can scratch glass.

I agree, I’ve used it on glass and chrome for years without issue, but you’ll always hear people who say it scratches.