Rust Proofing 2024 GMC Sierra HD due to NY Winters

[Savannah Ottman]

Hello!

I recently purchased a 2024 GMC Sierra HD and unfortunately for myself, I live in NY. Looking to protect the truck and prevent rust. Recommendations on best undercoating out there would be greatly appreciated. Thank you!

[64BAwagon]

I have used Fluid film on my last few trucks including my 2021 3500HD and my 2024. I use around 2 1/2 gallons per truck and concentrate on the inner rockers and the wheel arches in the bed. Both those areas have rubber plugs from the factory that will allow access to the inside of the panels. I do my doors with a spray can of Fluid film and insert the straw into the drain holes already in the front and rear. This way the pinch weld gets flooded but none of the components inside are coated. I allow it to drip for a day or so. There are enough holes to allow reach into almost every void on this truck. No need to drill anything. Given the time it takes and the amount of material needed if you could have it done professionally for 250-300 $ I would call that a good deal. A decent spray gun will run you 100$ along with the fact that the job is best done in the summer and not in November (unless you want to make a huge mess indoors) 

There are a number of similar products that will work well also, Woolwax comes to mind. 

 

[newdude]

Avoid Ziebart.  I could run an Instagram page of rotted out Ziebarted cars made up of mostly people who when yearly for re-sprays.  

 

Fluid Film, Woolwax, Krown would be my choices.  

Edited November 13, 2023 by newdude

[Black02Silverado]

AMSOIL's Heavy-Duty Metal Protector is another option.  It dries to a wax film and I have several customers that really like it. Easy to apply and about 5 cans will cover the average truck underside.   If interested let me know and I can quote to your door with the GM-Trucks discount.

 

[newdude]

4 minutes ago, Black02Silverado said:

AMSOIL's Heavy-Duty Metal Protector is another option.  It dries to a wax film and I have several customers that really like it. Easy to apply and about 5 cans will cover the average truck underside.   If interested let me know and I can quote to your door with the GM-Trucks discount.

 

 

 

Hmmm.  Sounds comprable to Boeshield?  I've used that before and I like that one but its $$$.    

[GmEnjoyer]

I just had my truck sprayed with Krown. First time using is it, it might not be the best but its cheap to have done. I figure anything is better then nothing

[2021 HD]

I am trying Fluid Film this year.

[Pryme]

I sprayed my truck again this year with fluid film. 

[64BAwagon]

I did the majority of my truck over the summer but since I had some time a few weeks ago I dropped the spare and sprayed the bed floor, the winch and the metal wheel on the spare. It might be a little messier dropping the spare now but I have had to cut a few of these winches off the truck to get the spares down and that definitely aint any fun. 

[nitro882]

Just dont use Zebart or any other hard rubberized coatings. They will do more harm than good. Krown or fluidfilm would be the way to go.

Eric O explains it pretty well. If you are near him maybe have him do your truck with fluidfilm.

 

Edited November 14, 2023 by nitro882

[boss416]

Make sure you rust proof in inside of the frame rails. I have a 2009 gmc sierra with frame rot along the lower side of the box frame. So preventable, if nothing else pour chain saw oil or tranny fluid into every hole of the box frame.let it soak in 

[XY74]

On 11/13/2023 at 1:51 PM, 64BAwagon said:

I have used Fluid film on my last few trucks including my 2021 3500HD and my 2024. I use around 2 1/2 gallons per truck and concentrate on the inner rockers and the wheel arches in the bed. Both those areas have rubber plugs from the factory that will allow access to the inside of the panels. I do my doors with a spray can of Fluid film and insert the straw into the drain holes already in the front and rear. This way the pinch weld gets flooded but none of the components inside are coated. I allow it to drip for a day or so. There are enough holes to allow reach into almost every void on this truck. No need to drill anything. Given the time it takes and the amount of material needed if you could have it done professionally for 250-300 $ I would call that a good deal. A decent spray gun will run you 100$ along with the fact that the job is best done in the summer and not in November (unless you want to make a huge mess indoors) 

There are a number of similar products that will work well also, Woolwax comes to mind. 

 

What sprayer are you using?  Mine won't put out even close to that kind of volume. 

[Kerry Pulaski]

On 11/13/2023 at 2:22 PM, newdude said:

Avoid Ziebart.  I could run an Instagram page of rotted out Ziebarted cars made up of mostly people who when yearly for re-sprays.  

 

Fluid Film, Woolwax, Krown would be my choices.  

I had a poor experience with Ziebart on my new '16 HD. Did not spray where they said they would.  Had to remove one bed wheel liner to add wiring, nothing sprayed behind it !!  Took pix, and brought it back.  For my business, I have to carry liability ins. as contractor. So my broker sent me a Cert. of Ins.. for that Ziebart dealer, and I insisted I be in the bay while they did it right.

Now many rust-proofers do not want the liability to spray inside of doors , due to electronics. I talked to a Krown dealer near Albany, N.Y., that said no problem with that.  Ask before you choose a locaton.

Myself, like @64BAwagon, prefer a Lanolin Wax based product , non chemical product. Will not get into wiring problems.

[Kerry Pulaski]

18 hours ago, XY74 said:

What sprayer are you using?  Mine won't put out even close to that kind of volume. 

I purchased a few gal. of Woolwax, from the mfg. in Fall River, Ma. Also the spray gun and extension wands.

[Kerry Pulaski]

18 hours ago, XY74 said:

What sprayer are you using?  Mine won't put out even close to that kind of volume. 

What I also did, spraying in the doors and rockers, was to temp. plug up the weep drain holes for a week, with Plumbers Putty, to let the Woolwax creep into all the lap spotweld seams.