I am the proud owner of a 2005 K2500HD Crew Long bed Duramax. Now the question is weather to have it rustproofed.
There is fairly heavy salt use in this area of Central NY.
My '91 K2500HD was not rustproofed. I had the cab corners replaced a few years ago, but it has held up pretty well.
My '90 Mazda MPV was rustproofed, but Ziebart only warrantied it for 7 years. I has a bunch of rust work done around 2000, by the time I sold it it had rusted through in several places.
The manual for my Silverado indicates that GM doesn't recommend either way.
Thanks.
Jeff