I purchased a 2008 GMC Sierra this weekend and after I got it home I noticed that the undercarriage had quite a few areas with surface rust. The rearend housing also has a bit of rust and the backs of the front spindles are rusted. It is all just surface rust, but it still kind of bothers me. I took the truck in to get detailed at the GMC dealer today and asked about the rust. They said that there was a technical service bulletin for this issue and proceeded to spray a little flat black paint of areas that are easily seen. I guess they thought that I would look under the truck. I would prefer something a little more factory like the rubberized black paint normally used on the undercarriage.
Are areas of surface rust on the undercarriage normal on a new truck? Should I even worry about it? Lastly, what if anything does the dealer have to do for a technical service bulletin?
Thanks in advance.
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