2021 Tahoe rust protection/undercoating

[21TAHOEMN]

Had the vehicle rust projected and they said they don’t spray the frame do to a wax like coating. Anyone know about this? Was charged full price for half the work!

 

[Rdr854]

My understanding is that aftermarket rust proofing will void the OEM rust perforation and corrosion warranty. The wax like coating on the frame is part of the rust proofing and anti-corrosion countermeasure from GM.

 

[21TAHOEMN]

My understanding is that aftermarket rust proofing will void the OEM rust perforation and corrosion warranty. The wax like coating on the frame is part of the rust proofing and anti-corrosion countermeasure from GM.

Would you leave it or coat over it any ways?

 

[cardude2000]

Serious question as I never own a vehicle with more than 70k miles on it...is rusting through frames really still a thing?


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[ivin74]

Get your money back, you will probably sell the rig before you see rust on those new tahoes, most of the panels are made out of aluminum.

 

[Rdr854]

Would you leave it or coat over it any ways?

I would not use any aftermarket rust proofing. I would rely on the rust proofing and anti corrosion steps taken by the manufacturer.

 

[Rdr854]

Serious question as I never own a vehicle with more than 70k miles on it...is rusting through frames really still a thing?


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It has been a problem with some vehicles, where manufacturers have been required to replace the frames under a recall and class action suit settlement. This was a big issue for Toyota trucks.

 

[kiwi]

Not sure about your weather and dirt/salt/road chemicals conditions in US/CA, but here in Russia we usually consider manufacturer "coating" as a transporting grease only.

So Krown, RustStop, Dinitrol and so on is almost a must.

 

[ytechie]

I'll probably spray mine with Fluid Film. I use that stuff on the bottom of my RV, snowblower, etc. Lots of videos on YouTube showing it being used.

 

[21TAHOEMN]

Serious question as I never own a vehicle with more than 70k miles on it...is rusting through frames really still a thing?


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there are other benefits to the under coating. Sound deadening and a warranty depending on the installer