2020 Rust problems (How to fix and what can be replaced)

[DaisyGirl]

Hello All GM owners,
My 2020 Tahoe which I bought brand new, and it only has 37,700 miles on it.
Does anyone know or have had luck with getting this fixed and then preventive measures applied to stop it from happening again.
I have an extended warranty looking to see if that covers anything. I also read a bulletin about faulty wax coating and prep for my year Tahoe.

https://gmauthority.com/blog/2024/03/gm-to-fix-chevy-trucks-frame-wax-coat-peeling/

I feel completely lost and let down by GM. I don't even have it paid off yet.

Any words wisdom, help, or thoughts?

Thank you-DaisyGirl

 

[Big Mama]

Is GM declining the 6 year corrosion warranty because it’s not rusted through? I think the guys up north can answer better than I can but you can certainly replace any bolts with new. @Joseph Garcia lives up north. He may have some ideas.

 

[Joseph Garcia]

I wish that I had something concrete recommendations to stop that corrosion, but unfortunately, I don't.

I wash my truck often, particularly in the winter, and I always keep it in my portable garage, when not in use. I also keep a paint repair kit for use on scratches or chips in the paint surfaces.

 

[GMCChevy]

Where are you located? If a winter rust area find a place that does oil spray rust proofing, not the hard no drip stuff. That'll pretty much stop it. Doubtful GM will do anything to fix it. You could sand it off yourself and put black rustoleum over it.

 

[justchecking]

I had good luck stopping rust that already started with krown oil treatments. See www.krown.com for locations. Don’t go to to a company called zeibart. Also talk to your dealer and see what they say. Good luck.

 

[RoadTrip]

Unfortunately due to my years of living in upper midwest winters, I’ve become somewhat of a rust killing expert.

The problem areas the OP is showing are certainly manageable. For every one you see, there are many you haven’t discovered yet. Put your vehicle up on a lift and bring a box of kleenex for yourself.

The best process for tight areas like this is to sandblast the rust (small diy kits available at Hardly Freight) and then treat it with POR-15 to suck the moisture out of any residual rust — which there always is.

You then over-coat the POR-15 with a high quality enamel to seal off any future air flow, and then coat it with a high quality undercoating spray.

Repeat on all of the other areas where the rust is occuring.