Help......Interior Door Streaks

72Malibu

72Malibu

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Pic is not my vehicle or one I am working on, but is a best & worst example. Its a '19 Escalade I was looking at purchasing till I saw this. The rest of the vehicle is spotless & nearly perfect (it has been cleaned since photo was taken). Door panel looks the same.

On my '15 GMC, I have similar discolorization streaks/runs on drivers door inner panel. Mine are a few in the recessed area above the speaker. And its only drivers door panel. Its like a product was poured onto panel and left to dry or window left down in a rainstorm, which I have done neither.

I have not been able to do anything with the streaks. I have tried mutiple products and brushes trying to get the possible chemical to release. Nothing. Doesn't mimimize it, doesn't make it worse.
An interior dressing will hide them for a short time.

My employer replaces my work truck every 4yrs. The Chevy Colorados did this. Both the one I drove and took care of, as well as my co-workers, whose idea of "cleaning" was sweeping the crumbs out of the front seat. (His trucks are absolutely dry-heave gross after 4yrs!).

But, Ford Rangers we've had, and currently have, have not done this.

Anyone have suggestions as to why they (GM?) do this?

Any suggestions as to what to do?

Thank you all and have a Blessed day.
 
Okay, don't know where the pic went, or why it didn't post.

Description;
White streaks or runs down interior door panel. Looks like someone poured a product and left to dry. Weird part is, the streaking goes straight down. Places where you would expect a liquid to pool and spread out, or change direction due to curvatures in the plastic, it does not.

Make sense?
 
I can’t see the picture, but could it be Windex w/ammonia? Just a guess.
 
For some reason I cannot get a pic to post.

Sorry. I'm trying.
 
72Malibu said:
But, Ford Rangers we've had, and currently have, have not done this.

Anyone have suggestions as to why they (GM?) do this?

Any suggestions as to what to do?
Click to expand...

Not sure WHY they do this but GM's are known to have potential issues with certain products. I've seen it posted about for years and years. IMO it's not likely just GM but perhaps their supplier and the products they use. Interior surfaces including the door panels all have a clear coat layer that makes up the polymers and from what I can tell, they don't respond well to harsher chemicals. I never have nor will use harsh chemicals for many reasons but loads do and that's what I suspect has happened here at some point. Interiors are VERY Resilient and clean up quite easily but again, many choose to use harsher APC's and what not.

What to do, not sure. I've seen some instances where darker surfaces can be treated with some temporary fixes but doubt there' anything outside re-dying the entire panel or replacing it that will even it out. Sorry.
 
TTQ B4U said:
Not sure WHY they do this but GM's are known to have potential issues with certain products. I've seen it posted about for years and years. IMO it's not likely just GM but perhaps their supplier and the products they use. Interior surfaces including the door panels all have a clear coat layer that makes up the polymers and from what I can tell, they don't respond well to harsher chemicals. I never have nor will use harsh chemicals for many reasons but loads do and that's what I suspect has happened here at some point. Interiors are VERY Resilient and clean up quite easily but again, many choose to use harsher APC's and what not.

What to do, not sure. I've seen some instances where darker surfaces can be treated with some temporary fixes but doubt there' anything outside re-dying the entire panel or replacing it that will even it out. Sorry.
Click to expand...

Vinyl door panels & dashboards aren’t coated the same way as seats are. They don’t have a layer of “clearcoat”.

Just 1 of the reasons why you can use a melamine pad to clean door panels & dashboards but you wouldn’t use them on seats.
 
Eldorado2k said:
Vinyl door panels & dashboards aren’t coated the same way as seats are. They don’t have a layer of “clearcoat”.

Just 1 of the reasons why you can use a melamine pad to clean door panels & dashboards but you wouldn’t use them on seats.
Click to expand...

It's not the same coatings as over leather/pleather, etc. but they are coated. It's a clear layer bonded to top. When I did my IICRC certifications they had a representative from Piedmont plastics a leader in the supply chain and he went over it. It's why you'll often see older door panels peeling or appearing as if someone has worn off the surface...because they did.

Here's a link to one of many that describe GM's process. Special water-based clearcoat system improves surface haptics, while resisting scuffing/abrasion and UV yellowing,
Plastics Car Blog: Soft Thermoformable TPO Foam Bilaminate with Clear Coat

A key part of the water based clear layers function is to resisting scuffing/abrasion and UV yellowing,
 
Thank you very much for the replies. Now its making sense why I am seeing this and making sure I do not do anything that contributes to the issue.

Again, thank you.
 
@TTQ B4U. Thanks for the reply.

@72Malibu. I would try a Magic Eraser w/diluted APC, followed up with leather conditioner.

Another option would possibly be an aerosol vinyl dye that can be used on plastics, vinyl, & leather. I believe it’s SM Arnold Refinisher or something along those lines. I think Duplicolor makes a similar product. I’ve seen the results in person and if done properly you’d never guess it didn’t come from the factory.
 
Is it kind of chalky? If so, I've experienced this a bunch on late model GM SUV's. It appears to me to be some sort of protective coating that's suppose to be removed before you take delivery.
Best way that I've found to remove is to get a soapy wash mit. Wipe the panel. Spray a STRONG APC, scrub and then dry with a cotton towel.

Having said that. Only way I would have a late model Escalade is it someone gave it to me. 100k rolling garbage can. Total junk imo
 
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