Huskersfan

I don't have much to update, the truck has the tsb finished and everything seems to be working fairly well. The only amount of significant moisture the truck has seen has been me washing it, but I have either seen no water enter or a few tiny drip towards the front or rear corners below the drains. The three new removable panels are definitely new, they weigh a lot more than the old ones, seem heavy duty. The rear v shaped seal I had mentioned I had damaged was replaced with a new one that appears to seal properly. Overall at this point I am very happy I had them do this, hopefully it stays this way.

I dropped my truck off this morning and they weren't sure if they would get it all done today and might have to keep it over the weekend? I've seen the TSB and I don't know how that could take several days considering I've already added the shims and enlarged the drain holes. I think I could find the rest in about 2 hours, all that needs done is add a replace a few seals and put the put panels on.

Where is the water appearing now?

My dealer has everything ordered and should hopefully get everything this week, I'm guessing it won't take long to put it on, the only thing that hasn't been done yet is the panels and the seals the panels rest on.

I'm glad to hear it got done. I'm not sure if mine is a severe leak or not, but it is a frustrating one. Mine mostly leaks around the front and rear main gutters, meaning the water almost goes into the gutter, but instead drips around it, it's been very frustrating trying to figure out a solution on my own. I've spent many hours with a garden hose and a flashlight and have really gotten nowhere. I'll keep my figures crossed that this will work. .

Has anyone has the TSB 18-NA-135 completed on their vehicle? I spoke with my dealer yesterday and he said he would order the parts and let me know when they come in. I also contacted Chevy customer service and have a case started. I didn't figure it would get much done, but the person I spoke with seemed concerned and agreed it is a warranty issue and needs resolved.

The V shaped seal I am referring to is not on one of the removable panels. It's the rest of what is supposed to seal the tailgate. It seals the sides and bottom of the tailgate when it's closed, it's held on with those plastic push in things.

Be careful with any of the parts and pieces with the high desert package. The V shaped seal that is designed to press against the tailgate when closed was damaged by me. On mine it doesn't touch in several areas causing water and dirt to enter the bed. In an attempt to modify it I tore the rubber. I contacted a local dealership and they told me that rubber seal isn't available at all, he had to way to order one. I looked up some parts places, but when I call to confirm the part nobody answers. So at the moment I have it held together with gorilla tape.

Yes, that is the TSB that involves enlarging drain holes and adding shims, which is what I have already done. It also replaces the rubber seal/ channel on both sides that is the length of the bed (it's what the panels rest on). I already performed those myself except for replacing those two seals. I wasnt sure they were causing as much of a problem as other areas. What I am wondering is if there is a separate TSB from that one that involves replacing panels, seals, etc. And if there is what info or title it is so it can be looked up by my dealer

Was there an observable problem they saw that inspired them to replace the panels? Or are there new versions?

Yes, that is the TSB that involves enlarging drain holes and adding shims, which is what I have already done. It also replaces the rubber seal/ channel on both sides that is the length of the bed (it's what the panels rest on). I already performed those myself except for replacing those two seals. I wasnt sure they were causing as much of a problem as other areas. What I am wondering is if there is a separate TSB from that one that involves replacing panels, seals, etc. And if there is what info or title it is so it can be looked up by my dealer

Can you please provide any info you can for this TSB? If there is a name or number associated so my dealer can look it up easy. Also, just to confirm, this is a separate TSB from the one that enlarges the gutter drain holes and adds shims?

It might sound bad, but I'm glad I'm not the only one pissed about this. When I spoke to my dealer about it before he made sure to say over and over again that it wasn't designed to stop all water. I found that pretty annoying. Based on them not caring, I feel I will either wait for GM to do something or try and fix it myself. My next plan is to get some weatherstripping adhesive and apply it to the rubber strips on the panels. I'm not going to glue the panels together, but the glue the rubber strips to the panels they are attached to. Right now they are just held in place, but not sealed and glued. If that works I'll move on to the next leaky spot. I really want this truck to work, I think it is a great idea, but terrible execution. I wish they had ran a garden hose on it before they shipped them out. Mine has leaked since day one, obviously they did nothing. Make sure this thread stays alive in case there is a fix from GM. My dealer doesn't seem to care, but I feel like if something came from GM they would do it.

I feel I cured the dust problem, but... It leaks water pretty bad. The worst is where the three panels connect to each other, the rubber seal sucks and water goes through on the side it is connected to the panel. I spent half the day trying to figure something out and I feel it's worse than when I started.

I went to the dealer today and took a look at the tsb. The problem it attempts to fix is the four drains, 2 front and 2 back all can clog. It has you take almost the entire thing apart and make the hole bigger. Also, had you add some shims so that the three hard panels lock down tighter. I am having them order the shims, but after spending the afternoon unclogging the drains, I feel like I need that done too.