So I've been trying to figure out what exactly this piece is called as on one side of my truck it's rusted really bad as I've attached pictures of both sides. It's some kind of bolted-on support beam or crossmember, but when I look those up online it doesn't pull up anything of the sort. I put some POR-15 on both of them (that's why they're glossy) but I'd probably be better off buying a new set. It's a 2006 GMC Sierra 4.3
I am doing a little bit of research on possibly getting my 2015 1500 Silverado cermaic coated. My truck is black so it shows dirts and dust fairly easily. I have always applied wax to my previous cars just had heard about ceramic coating through social media. The product that I have heard the most is called CeramicPro. If anyone has used it on their vehicle how did it turn out? Any help is appreciated.
Executive Editor / Publisher, GM-Trucks.com
April 12th, 2019
A few months ago we started to notice something on our 2019 Silverado that no owner of a brand new vehicle wants to see. Rust. Specifically on our rear bumper, just around the plastic step. It wasn't huge and didn't spread very far from the edge... but we couldn't stop noticing it. There was no excuse for rust on a 8 month old vehicle with less than 10,000 miles. The photo above shows the minimal but noticeable rust patch. It was even happening on both sides and in the same place. The issue seemed odd.
Unfortunately, we've just been too busy to bring it by to our local dealership for them to look at. Lucky for us, our procrastination has paid off, because in the time between us first noticing the problem and getting off our lazy asses to drive to our dealer, GM has released a TSB about this very issue.
It appears that on most of the early trucks, production of the bumper was completed incorrectly. The steel assemblies should be bent into shape then chrome plated. But that didn't happen in a small part of the early bumpers. The supplier bent the area around the side step after the bumper was chromed. The new folds in the steel damaged the chrome, cracking it and making the truck susceptible to rusting.
What's the fix? If your bumper is rusting already, Chevy and GMC will replace it. If it has not yet started to rust, they will apply an automotive grade wax/sealant to prevent rust in the future.
If you're unsure if your 2019 has this issue we suggest doing the following:
1. Give your truck a bath for heavens sake!
2. Clean the rear bumper step area with a hose or pressure washer. Front and back! We find lots of dirt collects behind our step in the bumper assembly.
3. Inspect around the foot step area and behind the foot step area. We found rust in both areas!
4. If in doubt, wait for it to rust and kindly ask for a new rear bumper.
Our dealership, Banks Chevrolet in Concord, NH has been great getting our rust issue fixed. Our service adviser Justin has kept us in the loop during the repair and gave us a loaner Silverado LT while they have our truck. He even made sure any other outstanding service updates are also applied to our LTZ while it was in the shop. As it turned out, there were six open issues that needed addressed.
Here's the official Service Update you can print out and bring to your dealer when you take your Silverado or Sierra in for service.
The bed corners (getting thin) and the rear leaf shackles (lots of pack out) in particular may be a problem soon. But it's an awful pain in the butt to crawl around under there trying head off rust at the pass. How much longer do you think this truck's got before I have to worry about something giving out at max payload?
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