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2019 Sierra SLT. Remote start will not work. I've checked all the security features it needs to operate. Tested battery. 12.4 volts. After pressing the lock on my key fob, I then hold the start button. The lights flash but the start process does not initiate. Every other function on the key fobs work. The truck will start manually by pressing the start button on the dashboard. I have also replaced the batteries in my key fobs. I also have the My GMC app active. It sends the start function to the truck. Flashes the lights but does not start. Any suggestions?

Ok, something just started happening with our 2016 GMC 2500HD Denali 4x4 with the diesel. The remote door lock and unlock won't work every time from either of our fobs. We bought this truck last August so I can't imagine the batteries in both of our fobs have died at the exact same time and only 7 months in. My fob gets used the most with my wife's fob barely getting used at all. Anyone else experience/experiencing this? And, what did you do to remedy it? I guess we can try replacing batteries first, but batteries only lasting 7 months in a fob? And both failing at the same time, especially given one gets frequent use and one barely gets any use. We know it's not a fuse because it does work from time to time.

I have a 2012 Suburban, owned since new. Yesterday the key fob / remote / keyless transmitter stopped working. It stopped, then worked a couple times to unlock, then quit completely. I assumed it was a bad battery (10+ years old), so I replaced it with a new battery, still didn't work. I have the second remote that's only been used a couple times when the keys were "lost", and it doesn't work either. No response from any buttons. I checked the batteries in both, and both batteries are at 3.3 volts. I pulled the DSM fuse for 5 minutes and then disconnected the vehicle battery for 5 minutes, no change. I have tried holding the remote right next to where (I think) the RCDLR is in the left-rear pillar, still no response. The TPMS system works fine, reading all 4 tires correctly with no errors. I hooked up my ODB2 scanner, and it doesn't show any codes. Do I have two dead remotes? Or has the RCDLR partially stopped working? I called the dealer, all they said was "buy a new remote, your two remotes have died". I asked, why would an unused 10 year old remote die? No answer, just come in and buy one. I have no faith in my dealership's service department based on previous repairs unfortunately, so I thought I'd ask here. My local locksmith will attempt a re-sync for $50, but they said if they're both not working it's not that. Unfortunately this year model won't allow the user to add or reprogram a remote. Thanks in advance for any ideas of what to try, or what might be the issue.

Here’s my Walter.

I have less than 300 miles on my 2020 GMC Sierra 2500HD. I have utilized the remote start feature on my fob 3 times so far. Each time, upon entering the vehicle, I place my foot on the brake and push the start button to bring it up to life. Everything works fine, with the exception of the infotainment screen. It remains black, with the exception of displaying the rear camera view when I back out my driveway. Once back in drive, it goes back to black. I have to park the vehicle, turn it off, and then re-start using the vehicles start button to bring the display back on. Anybody else having this issue?

Hello, I have a 2001 GMC Sierra 2500HD, the keyless remote receiver seems to be going out on the truck because i notice it is very selective on when it wants to work, from what distance, and every other factor in general. I even replaced the battery in the original remote and have reprogrammed an identical remote to my truck and it still acts the same. I opened up the dash to find the keyless entry receiver and have the part number #15732806 yet trying to order a new one I come to have found out that it is discontinued and cannot find one online to replace it with. My question is, can I get another keyless entry receiver from say a 2005 or 2007 or 2003 or any other suv/truck from GM and plug it in and just re-program the remote to the receiver, or is there something else I can do to get a new receiver even though the part is discontinued, or basically what are my options?