GregG10

Love mine! Installed on my AT4, no wind noise at all. Tailgate works perfect with it. Just take a few minutes to adjust it when installing it. You can adjust it so tailgate opens on its own and is still water tight. Love how water tight it is and how secure it is also. I can leave my fishing / hunting stuff inside without fear of getting stolen! I have the HD version and for the 4th of July fireworks show the wife and I took our lawn chairs and sat on top of the diamondback. Best view in the parking lot!!!

A want for me too! I find it strange that when backing up to hook up one of my trailers I can use the line to back up close and then I love the above view of the trailer hitch to stop the ball right under the hitch but have to stop and scroll to the next page to get that view. Would be perfect if it was right next to the line backup on the info page.

I just installed and learned sensors for 2 dual axel trailers today. Found a work around to the horn not honking but I think the tool on amazon would be cheaper. I had my wife sit in the truck and honk the horn when it learned each tire. I know desperate times call for desperate measures. Just a disclaimer here— I did make her sit in the passenger seat while doing the setup!

Look up diamondback covers. Definitely water tight and the best part very secure! You may or may not like the styling, it is for me but not everyone. Very rugged looking. Not as easy to have an open bed like the trifold I had on my old truck but you could open it with a coat hanger and it leaked after a year.. the diamondback can be taken off in a few minutes with one wrench. Watch their videos.

Never had a drop of water in my diamondback! The other plus for me is the security of it. No coat hanger is going to open this one. Even a crowbar would take a long time. The rugged looks and cost are not for everyone I understand.However for what I haul security and dry are the most important things.

Thanks Dick Messerly for the advice, I went ahead and plasti dipped mine and couldn’t be happier! Was really an easy project too.

My 2020 gmc AT4 does not have any kind of warning except I tried i in my garage and the outside lights flash just like they do when you hit the button on the tailgate. Will not help if outside and can’t see the lights!

Installed my new bed cover plasti coated the emblems bed rug installed radar detector and dash cam installed and wired now to just enjoy the truck! Till I see something else on this stupid forum that I must have!

My AT4 had 8 miles on it when I purchased it and it smelled terrible. Wife was really put off because of the smell, told her it was the new car smell! I have a bit over 500 miles now and it has gone away. Figured it was a combination of oil coatings and new muffler catalytic converter etc.

Finally had time to play with the phone and truck today. Mine seems to work fine! It does lower the volume on the phone while connected either by Bluetooth or the cable and in apple play. However once I disconnect it goes back to full volume. Iphone X, latest updates and in settings I have the change ringer with side buttons off, This is on a 2020 AT4 with the latest updates also. Not sure this will help anyone but my experience.

Was hooking up my dash cam today and noticed each time I started the truck the volume level on my IPhone dropped to 2 bars also. However I got a call when the truck was off and it rang normal. Just checked it when I saw this thread and it is up to the normal high setting I keep it on. Wondering if it is a normal connection setting to keep it from being to load through the truck when it is connected but then goes back to normal for when not connected. Will play with it tomorrow a little more.. I do have the buttons to change the ringer volume disabled.

I know most of this is old posts but since it came around again and I was searching for an answer maybe someone can help. I purchased a 2020 GMC AT4 yesterday and am going to pick it up Tuesday. I looked all over for the sensors and they are not in the truck, salesman was clueless but talked the the manager and he told him to tell me they are not included. The window sticker does not state anything about them but I thought if you got trailering you got the sensors. This truck has everything possible on it I believe with the exception of the cat back. Sticker was 65,834!! And no sensors and they will not throw them in either! I do have a tandem boat trailer and really want them, oh well any help here?