your crazy to think any other brand would be any different also lol

i think undercoating your supposed to get it resprayed every so often if you want it to stay on :P

 

My 2003 Sierra gets surface rust on the frame from time to time. The way I fight this is with a wire brush and a product called Rust-mort. Then I either spray Rustoleum paint or undercoating which I buy from the local parts store.

 

BTW, it doesn't really matter what brand you use. The ones mentioned in my previous post are just the products i like to use personally. You can use whatever you want. The rust-mort is a rust converter and the paint/undercoating just covers and seals.

 

welcome to the rusty truck forum my 2002 has been like this for years, last 2 yrs brake line,fuel lines, front hubs, and now cab corners and rockers , this is common problem for GM, cheaper materials =cheaper trucks, I hear gm is making some of there truck body panels from aluminum , but the frame is steel. Ford is coming out with an all aluminum body but steel frame, I take care of mine, always washing underneath, there is a product they use in Canada is no drip oil. Give it a try also my boss paints his underbody every year.

 

I am sorry but have to jump in here again....This is NOT a common problem just for GM.

I will repeat as stated in my previous post on this thread.

If you live and drive your vehicle were is SNOWS and the roads are SALTED your vehicle WILL rust period.There are ways to slow it down but not to prevent.

It doesn't mater if GM,Ford,Chrysler,Honda,Toyota or even a Yugo,they are ALL made from steel and will rust.

For example my 99' Silverado has zero rust anywhere,why,because it doesn't SNOW where I live...

Just to reduce the misinformation around here some.....

 

My 1988 Chevy Cheyenne 4x4 lived all it's life in the snow belt, and it never had the problems that my 2002 has, it had all the original brake lines and fuel lines. Let's just face the facts all the brands are making cheaper less reliable vehicles, look at all the recalls, brake lines and fuel line replace rear bumper, rockers, cab corners the list goes on and only 92 k no misinformation here cold hard facts they just make a cheaper truck, we pay more for a gm, Chevy truck than other brands we expect better built,quality trucks. That last like a rock,

 

67Motorcat has is right imo. I've seen a very large sample size of vehicles having lived in the rust belt. I've run more brake lines front to back than anyone I know working in the trade.


If its 10+ year old and not coated or rust protected; it will be scaly, flakey, rusted junk with holes the floor and brake lines ready to burst at the first hard brake app.

 

Not sure if it is cheaper grade of steel or not, but the last 2 trucks I've had 1998 Ford and a now the 2003 Chevy have had holes rust in the differential covers. The place I get it inspected, the owner says they've even had to replace oil pans that get holes rusted in them.....
Never seen metal rust like it does now. It actually scales off in sheets, not just pitting like the old stuff did. Even rotors scale off and rot. My truck only has 55,000 miles doubt it will last to 100,000 miles. Trucks run well enough, plenty of power.
John

 

I know rust happens. I have a 2013 Silverado I bought brand new from the dealer. I live in the Chicago land area. I wash the truck as mush as possible when it snows. It’s garage kept must of it’s life. Surface rust is not the problem, but my problem is my frame has completely rusted through. I have a hole next to the gas tank About 7” long and big enough for my fist to fit in. Is there any help I can get for a frame that’s only 7 years old?