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I just purchased a new GMC 2500HD at Allen GMC in Orange County Ca. A week after delivery I discovered the entire underbody of the truck was covered with dried Road Salt. I did not inspect the underbody prior to purchase because I didn't think I had to. To make things worse GM is well aware of the issue. In April 2018 GM issued Bulletin PI0281G (attached) to Dealers. So GMC builds this beautiful truck, then they take it out in to a storm on roads covered with a corrosive chemical (road salt). They don't bother to wash it off they just ship it out to a Dealer. In my case California. You should know as the temperature increases so does the rate of corrosion. Having grown up in the "salt belt" Wisconsin I know the extreme damage done to vehicles by Road Salt. So GMC in an effort to cover their tracks notifies Dealers of the issue and instead of a discount or compensating customers they just say "that's the way it is. No consideration for damage will be made other than normal warranty coverage" . To me there is something very wrong with being aware of major corrosion damage to a vehicle and not disclosing that fact to the buyer! It would be different if they delivered a new vehicle to me and I covered it in salt, but, I didn't get the chance to even get it over the curb the damage was done pre-delivery. I pursued a vehicle replacement through the dealer and GM Customer Assistance but GM is refusing to replace the vehicle. Buyer Beware! Inspect the underbody of your vehicle before purchasing! I will post an update when I have it but the bottom line is I'm not getting stuck with this corroded junker. I bought a new truck and I expect to get one. PI0281G Underbody Corrosion.pdf
John Goreham Contributing Writer, GM-Trucks.com 5/13/2015 NHTSA recently issued a warning to those that live in the salt states about rusting brake lines. The upshot of the multi-year study behind the advisory was that GM and other truck makers installed brake lines that did indeed suffer corrosion in the states with rough winters where salt is used on roadways. The corrosion caused failures and accidents. These were documented in the report. GM later changed its brake line design to add a more robust protective layer. That is likely the most cost effective way to prevent trouble, but is it the best way? Some readers wrote in to say that replacing brake lines is inevitable and changing them as part of long term truck ownership should be expected. We looked for products that might offer a better than OEM resistance to corrosion and found that stainless brake lines are offered. Indeed, Dorman, one manufacturer, markets the stainless brake lines as a solution to this very problem. Looking at the Dorman site we noticed right away that the kits are primarily for 2000 to 2006 model year GM truck and SUV models. Exactly those that might be due for a replacement.