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Exhaust Discoloring Rear Bumper

asilverblazer

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brims Senior Enthusiast

brims

Posted
Posted

I have an 08 with 19,000 on it and haven't noticed any discoloring on the bumper. My 07 had 13,000 and I didn't have any discoloring on the bumper. Hope I don't have this at some point.

MadCity Hoosier Enthusiast

MadCity Hoosier

Posted
Posted

I just looked at mine today. I've got a stain/tarnish on my 2008 Sierra All-Terrain rear chrome bumper too. Only 7000 miles on mine. Bummer. Is there a way to prevent this?

 

My old truck (94 Dakota) had 196,000 miles on it when I sold it last month. It also had some stains on the chrome bumper, but most of that showed up when my Oxygen senson went out and I ran full rich for a couple tanks of gas. Someone else mentioned the chrome polish as being able to remove the stain. From what I experienced with my Dakota, the exhaust ate through the chrome, causing it to pit and flake off in small patches.

 

Is there a permanent solution, or should I just count on getting a new bumper before my warranty runs out?

matt3 Enthusiast

matt3

Posted
Posted

Make them find a permanent solution. What are you going to do when your out of warranty and your 2nd bumper is discolored as well.

bizzle Enthusiast

bizzle

Posted
Posted

0000 grade steel wool will rub that shit right off and not scratch it. i use it all the time....dealers use it all the time to polish both chrome and glass too....just make sure you get all the metal particles off when your done....when using steel wool tiny little particles stick to surrounding areas and will leave rust on your clearcoat if they get any type of moisture.....so just wash em off when your done

bow07 Enthusiast

bow07

Posted
Posted

A quick clay bar job and Mother's Chrome polish got mine looking better than new. Took less than 10 min as well.

russell22b Enthusiast

russell22b

Posted
Posted

i got a 99 silverado with custom exhaust and no cats but do have mufflers and before i put mufflers on every once in a while i had to clean my bumper so check ur cats and see if theres something wrong with them not collecting or it could be the stock muffler screwing up thats why i got magnaflows :cheers:

asilverblazer Senior Enthusiast

asilverblazer

Posted
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Posted

Interestingly enough I have wondered if my truck is running differently than others, or in this case if the trucks effected are running different, perhaps a smidge rich or lean, or as you mention cats not catalizing enough, etc... Of course for this to be so it would have to be a minimal amount in any case so as not to set a trouble code.Maybe my truck is running rich, might explain dismal fuel mileage. (16mpg) :cheers:

jwieps Enthusiast

jwieps

Posted
Posted

I would like to see exactly what you are talking about. Mine leaves a "bluish" spot on the bumper - but not yellow, or small pitted spots - more like a cloudy blue patch.

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