I believe the hood is aluminum, had the same issue on a 2010, removed the plastic chrome piece and it was beginning to bubble around all the holes.
Stop by a dealer for them to inspect it, hopefully it'll be taken care of.
https://gm.oemdtc.com/7580/informat...pair-of-aluminum-hood-exhibiting-paint-bubbles-corrosion-2010-2016-cadillac-srx

 

The hood is aluminum and the fenders are steel?

 

What age vehicles are you seeing? The most likely cause is that the hoods take a lot more of the suns rays than do the fenders. Thereby the paint on the hood deteriorates much faster.

George

 

My brother bought a 2004 CTS brand new and the paint was like that from day 1. It’s not a matter of deterioration, it has to do with the way they paint the hood vs. the rest of the panels.

Even on my 2002 bronzemist DTS you can see how the paint on the rear quarterpanel shines like a mirror whereas the paint on the trunk just doesn’t quite shine the same way. It’s because they used totally different paint on the horizontal panels vs. the vertical panels of the car.

No amount of polishing will make the hood or trunk shine like the sides of the car. The paint is different, my question is why do they use different paint?

 

The hood, does in fact, oxidize faster than the fenders and sides, as does the top. But you've got to stand on a ladder to see the top, plus most of them have that big ole sunroof.

 

My brother sold that car... But I’m going to find another 1 and take pictures.

And you can see the difference in the paint on my trunk compared to the quarter panels. My car has not been re painted.

I’ve seen these characteristics on several car makes and it’s always on silver tone paint. I don’t know why but I’ve always wanted to know the reason.

 

Let me see if I understand. You have had one problem with the '15 and you think that qualifies for "worst luck." ?????

George

 

George... Since this is My Thread and it looks as tho it has been hijacked. I have to assume that you are addressing Me bc you haven't Quoted anyone.

I have had More problems than anyone should have with a 4 Yr old Premium Car.<<< That's a JOKE, Premium Car.

1. Battery Replace at less than 4 mo. old, just after we bought the Car Brand New.
2. Roof Rack supports corroded, Both sides replaced x2.
3. Cue Screen Replaced x3 .
4. Original Tires Dry Rotted at 18k miles, ALL Replaced.
5. Both Head-Lights Replaced due to Reflection Flaking off.
6. Instrument Panel Completely Replaced, speed Not matching the Car. Said 10 Mph when Parked. LOL.
7. Both Rear Lamps in Cargo area Replaced for Not working.
8. Just currently, the Front of the Hood is now Bubbling Paint from the inside out, due to Hood corrosion.

That is all I can think of without getting all the Paperwork out of the file cabinet.
I'd say that's a little more issues than any Cheap Car would have at this age.

 

Please provide us with the source of this "fact" that there is different paint.

George

 

All I need to do is locate a 2004 Silver CTS. If you happen to run into 1 on your own [there’s plenty around] take a good look at the hood next to the fenders in direct sun. It’s not due to oxidation, there’s just no way...

Btw I know a thing or 2 about oxidation and paint in general when I see it. I polish cars for a living.

Here’s a pic of the hood on my DTS how I bought it a few months ago.

Here’s how it looks now after I was done polishing it back to life.

It made great improvement, but it’s still not quite on par with how good the fenders, doors and quarter panels turned out but I’m by no means disappointed with the paint on my car.
I used a paint depth meter to confirm it’s the original paint all around the car.

I’ll be on the lookout for a 1st gen silver CTS. Good day my friend.

 

Just for the record: I never declared that different paint was the definitive reason to all this. My 1st question has always had to do with the hood being made of aluminum in comparison to the fenders, doors, which are made of steel. I’ve always pointed to that as a possible reason for the visual difference in the paint, however I’ve never known whether that plays a real factor or not, but I’ve always figured maybe that could be the reason? Does the factory paint bond the same way to the steel panels vs. aluminum? I dunno.

 

I understand you've stated the vehicles have original factory paint but check this out: http://etalon.gr/blog/2014/04/15/pa...15/paint-defects-in-bodyshop-mottlingclouding-prevention-is-better-than-remedy/

Also around the same timeframe, EPA mandated changes in painting procedures that caused auto manufacturers to change formulas to a water based paint. There were a few Cadillac colors that were recalled due to improper bonding to the primer.
I don't know if in fact aluminum panels had anything to do with all of this but there are many auto manufacturers that have had customers unhappy how their vehicles look, not specific to any one brand.
Environment does impact the top more than the sides as does ultraviolet light.
Not an expert just offering some ideas.

 

Those cars are still 10+ years old, you can't fight the sun beating down harder on the hood rather than the fenders.

 

My brother bought his car when it was just 2yrs. old. from the Cadillac dealership. The car was maintained about as good as anyone could ever ask for. The paint was always cared for and protected with synthetic sealant. Never saw snow.

From a few feet you couldn’t see the difference, but once you got up close especially if pointing a bright paint inspection light onto it you could see the difference and it even had a different texture to panel/paint. The fenders had a squeaky clean look and feel whereas the hood, while the paint had texture was smoother to the touch, not squeaky clean. That’s the best way I can describe it.

I found this picture of the hood. Unfortunately it’s not in direct light, but you can tell it lacks the same depth of reflection that the fenders have. [you can bearly see the outline of the trees in the reflection]

I took this picture of the hood on my Seville immediately after taking the picture of the CTS. Both in the rain, but you can tell the paint on this hood reflects much sharper compared to the CTS. [look at the trees in the reflection. Near perfect even with all the rain]

Compare it to the trunk of the same CTS. The trunks paint was far superior to what was on the hood. The hood never reflected like this.

The hood reflected more like the front bumper. Exactly like the bumper.

 

All of that is well and good, and, by the way, the appearance of that headlamp tells the story about how much sun that car has recieved, but anyway, when you find someone(credible) who can tell us that the hood, roof and trunk lids are painted with different from the rest of the car, let us know.

 

1st gen CTS headlights are notorious for hazing up. I restored them.

I’ve said it many times the paint on that hood looked different from the day he bought it. I’ve seen Mercedes Benz silver colored vehicles with the same exact deal on the hood. I’ll keep searching for the reason.

I think it’s more likely a bonding issue having to do with the aluminum vs. steel panels, but that’s just a guess. I can’t imagine them using a different paint on the horizontal panels for longevity’s sake. On silver? Why would they worry about silver? If anything they’d worry about black.

 

Any early generation of composite headlight assemblies oxidized no matter what brand. Proper care helped but over time they all ended up yellow or hazed to the point of no light on the road. Always amazed me how people could still drive at night.
Metallics (silvers especially) don't have the glossiness or reflection as a properly cared for black vehicle. It does depend on the care i.e. iron remover (sonax or iron-x), clay, polish(using a rotary or DA with the correct pads), etc.

 

I'm aware of that, but, it hasn't happened to me yet on cars that I care for, but, the ones that get left outside, yes. My best friend bought a new 2014 Hyundai Genny 5.0 R-Spec 6 months after I bought my SS. Both of our cars are white. He just recently had to have his lights changed because they were fading, while mine are crystal clear! Proper care, mainly keeping covered or in a garage, makes a difference like that on paint too!

 

Maybe so.

My observation from visiting this board, owning our 2015 "Premium Collection" SRX and from the ones that come in our shop(I work at a Chevy dealer), most of the problems with the SRX stem from not buying the Premium Edition. Doing so would eliminate or greatly reduce the headlight complaints and give you a more enjoyable automobile. I mean, why buy a Cadillac if you don't buy a "Cadillac"?

The battery and tires,meh...,could happen to any car.But, along with your corrosion issues, I'd say your car sits a lot and sits outside a lot, at that, or being rained on quite a bit, but, I don't know.

The CUE, and dash, now those are Cadillac exclusives and are worth complaining about. Even mine was replaced, just before I got it.

Rear cargo lamps, I replaced all of them with leds right after I got it, which was a great improvement.

I'm not saying Cadillacs are all that, heck, I made a darn good living working at a Caddy dealer and this is our 5th Caddy, so I know what all can go wrong with these cars, but, I'm just saying some things can be avoided by proper care or anticipation of future needs. That's all I ever do and I love my cars.!

 

Maybe so.

My observation from visiting this board, owning our 2015 "Premium Collection" SRX and from the ones that come in our shop(I work at a Chevy dealer), most of the problems with the SRX stem from not buying the Premium Edition. Doing so would eliminate or greatly reduce the headlight complaints and give you a more enjoyable automobile. I mean, why buy a Cadillac if you don't buy a "Cadillac"?

The battery and tires,meh...,could happen to any car.But, along with your corrosion issues, I'd say your car sits a lot and sits outside a lot, at that, or being rained on quite a bit, but, I don't know.

The CUE, and dash, now those are Cadillac exclusives and are worth complaining about. Even mine was replaced, just before I got it.

Rear cargo lamps, I replaced all of them with leds right after I got it, which was a great improvement.

I'm not saying Cadillacs are all that, heck, I made a darn good living working at a Caddy dealer and this is our 5th Caddy, so I know what all can go wrong with these cars, but, I'm just saying some things can be avoided by proper care or anticipation of future needs. That's all I ever do and I love my cars.!

 

Well WILLY92, You have Me and Many Others at a Really Big Disadvantage on inside knowledge of Cadillac's, so I can Only speak of what I have seen and experienced.
Re: Corrosion, there are Service Bulletins now for the Hood which is where mine has started. Service Bulletin # 16-NA-063 seems to be a issue Now that Cad. is aware of. I'm posting this for others to take notice of and is good for 6 Yrs. after purchase of New car. Cadillac is also aware of the Roof Rack supports corroding also as they are missed matched Metals touching each other and covered by Plastic.
Re: Why buy a Cadillac ? bc I thought I was buying a Cadillac based on old school thinking, Big Mistake. Cadillac was a GOOD brand to purchase but with Two under my belt now, I find that I might as well buy ANY Car that has a Good Warranty & Resale Value and with this Yr's Cadillac's they've dropped a Yr Off their warranty limit and their resale / trade-in value is horrible .
It's pretty Sad that Cadillac has stopped being an Automobile Leader ( IMHO>We ALL have Opinions ) and Now only followers & chasers of what BMW's & Audi's are doing.
Anyway let's just say, I'm really Disappointed with MY purchases in Cadillac.