Rust under the hood normal?

[mrp2004]

Is this rust normal for a new truck 2014 under the hood? I do have also frame rust pictures in another post.

 

[newdude]

From GM:

 

 

Some customers may comment that one or more of their vehicle's underbody components are showing some form of corrosion.

This corrosion may be red in appearance (rust) if the component is steel, forged iron or cast iron.

This corrosion may also be grey or white in color if the component is constructed of an aluminum alloy.

Note: Extended outside storage may increase the opportunity for brake rotor rust. Vehicle braking systems tend to be self-cleaning while vehicles are in use, preventing any build-up of corrosion on the brake rotor surfaces. At times more extensive corrosion can cause pulsation due to thickness variation. This usually happens when the vehicle is parked for long periods of time in humid type conditions and the braking surface area under the pads corrode at a different rate compared to the rest of the braking surface area. Cleaning up of braking surfaces (burnishing) can be accomplished by 10-15 moderate stops from 56-64♦km/h (35-40♦mph) with cooling time between stops. If multiple, moderate braking stops do not correct this condition, refer to the latest version of Corporate Bulletin Number 00-05-22-002 - Disc Brake Warranty Service and Procedures for additional information.

 

General Motors uses a large variety of materials in the manufacture of vehicles. Many of these components undergo an extensive corrosion protection process. These components include major body structures, powertrain, wiring and electrical components and various other areas of the vehicle. General Motors engineering determines the effects of corrosion on every vehicle component.

Acceptable Corrosion

General Motors has determined that the performance of some components is not affected by surface corrosion and no longer takes preventative steps on these parts.

 

Rust

This corrosion may be red or brown in appearance if the component is made of steel, forged iron or cast iron.

These are typical underbody or mechanical components such as but not limited to propshafts, propshaft yokes, U-joint, steering knuckles, brake rotors and calipers, axle housings, springs, shock absorbers, suspension control arms, tie rod ends and exhaust system components. As the rust ages, it turns from an orange-red like appearance to a darker brown like appearance.

 

Aluminum Oxidation

Cast aluminum alloy components may appear to have a grey or white coating on the surface commonly known as “surface oxidation.” Uncoated aluminum alloys begin to oxidize as soon as it is exposed to the atmosphere. This coating does not affect the serviceability or performance of the component.

 

Many mechanical components are cast in aluminum alloys, these components may include, but are not limited to oil pans, valve covers, transmission and transfer case housings, steering gears and axle housings.

 

 

 

Yes it is considered normal. The frame deal can be fixed under warranty.

[tbarn]

Have you never looked under a hood before? Absolutely normal.

[pm26]

Absolutely normal for parts made in China.

[Jon A]

It's a CAST IRON EXHAUST MANIFOLD! Every single one, ever made in the history of the world, made anywhere in the world, looks just like that. Stop spouting your China nonsense.

[SteveBBB]

It's a CAST IRON EXHAUST MANIFOLD! Every single one, ever made in the history of the world, made anywhere in the world, looks just like that. Stop spouting your China nonsense.

[BigBadSierra]

Just be glad the block isn't cast anymore. You know how many engines I stripped down and painted right in the engine bay just to cover up the rust over the years ha ha.

 

At least today they do make high heat products you can spray on the manifolds.

[pm26]

It's a CAST IRON EXHAUST MANIFOLD! Every single one, ever made in the history of the world, made anywhere in the world, looks just like that. Stop spouting your China nonsense.

I was not referring to the exhaust manifold, but to a crapload of low quality cheap Chinese and Mexican made parts these vehicles are made of. It was a sarcastic reply. I ordered a new differential cover for my truck recently because the old one was rusty. The new cover was made of bare unpainted metal and already had surface rust spots on it in the new parts bag! What kind of crap is that?. Is it that difficult to paint the outside of the cover when it is made?

Last weekend I had to replace a door lock actuator on my Impala. A $190 Mexican made part that fails after 4 years of use and is a nightmare to replace? And last year I had to replace a Chinese made HVAC actuator on the same car because one of plastic teeth broke inside? I have never had any HVAC or door lock actuators fail on my Mazdas or Nissans even after 12 years and 341,000 miles on my 1999 Mazda 626. Anyone care to explain why?

[pm26]

Just be glad the block isn't cast anymore. You know how many engines I stripped down and painted right in the engine bay just to cover up the rust over the years ha ha.

 

At least today they do make high heat products you can spray on the manifolds.

The blocks are still cast, but out of aluminum, not cast iron. Hence no rust.

[2016 Sierra Owner]

Absolutely normal for parts made in China.

 

As stated above cheap parts made anywhere will rust! Get over it. Our goods will never be all American made again.

[Chevyman3308]

I was not referring to the exhaust manifold, but to a crapload of low quality cheap Chinese and Mexican made parts these vehicles are made of. It was a sarcastic reply. I ordered a new differential cover for my truck recently because the old one was rusty. The new cover was made of bare unpainted metal and already had surface rust spots on it in the new parts bag! What kind of crap is that?. Is it that difficult to paint the outside of the cover when it is made?

Last weekend I had to replace a door lock actuator on my Impala. A $190 Mexican made part that fails after 4 years of use and is a nightmare to replace? And last year I had to replace a Chinese made HVAC actuator on the same car because one of plastic teeth broke inside? I have never had any HVAC or door lock actuators fail on my Mazdas or Nissans even after 12 years and 341,000 miles on my 1999 Mazda 626. Anyone care to explain why?

 

So go buy a Titan.

[pm26]

 

As stated above cheap parts made anywhere will rust! Get over it. Our goods will never be all American made again.

The issue is not whether they are all American made. The main issue is cheap design coupled with inadequate quality control.

[CAtaylor]

I was not referring to the exhaust manifold, but to a crapload of low quality cheap Chinese and Mexican made parts these vehicles are made of. It was a sarcastic reply. I ordered a new differential cover for my truck recently because the old one was rusty. The new cover was made of bare unpainted metal and already had surface rust spots on it in the new parts bag! What kind of crap is that?. Is it that difficult to paint the outside of the cover when it is made?

Last weekend I had to replace a door lock actuator on my Impala. A $190 Mexican made part that fails after 4 years of use and is a nightmare to replace? And last year I had to replace a Chinese made HVAC actuator on the same car because one of plastic teeth broke inside? I have never had any HVAC or door lock actuators fail on my Mazdas or Nissans even after 12 years and 341,000 miles on my 1999 Mazda 626. Anyone care to explain why?

I have changed 2 HVAC actuators on the wife's 2011 Armada. They have plastic gears now as well. All manufacturers are following suit it looks like. Granted this is all I have ever changed other than normal maintenance stuff on the the wife's last 5 Nissans so I know where you are coming from.

[Jon A]

I was not referring to the exhaust manifold, but to a crapload of low quality cheap Chinese and Mexican made parts these vehicles are made of. It was a sarcastic reply. I ordered a new differential cover for my truck recently because the old one was rusty. The new cover was made of bare unpainted metal and already had surface rust spots on it in the new parts bag! What kind of crap is that?. Is it that difficult to paint the outside of the cover when it is made?

Last weekend I had to replace a door lock actuator on my Impala. A $190 Mexican made part that fails after 4 years of use and is a nightmare to replace? And last year I had to replace a Chinese made HVAC actuator on the same car because one of plastic teeth broke inside? I have never had any HVAC or door lock actuators fail on my Mazdas or Nissans even after 12 years and 341,000 miles on my 1999 Mazda 626. Anyone care to explain why?

 

None of which has anything to do with this thread. I guess you look at every thread as an opportunity to troll, nothing more.

[KARNUT]

Wow, back in the seventies we were glad to get 60 to 100k out of cars and trucks. If you did they were full of rust, you didn't get under coating unless you paid extra for it. The engines were smoking by then and transmissions had one rebuild. No they were not cheaper, same price after inflation. You actually get more stuff for the same money now.