Fuel Gauge pegged at full

Chaser777 · Monday at 02:43 PM

Just picked up a new at4 2500 GMC. Put a little over 75 miles on it and noticed the fuel gauge is still at complete full. The range mileage has come down, but the gauge has not moved. I noticed when I turn the vehicle off, the little vertical white bar stays at the full level, but that bar slides fully to the left on the other gauges such as engine temp, volts, etc. When I turn the vehicle on, those little white indicator bars slide from all the way left, to current readings, where the fuel gauge is already pegged to the far right. This AM I stopped to put fuel in just to see where it was at and it took 7 gallons. Seems odd that the miles to empty seems to be reading correctly, but gauge is pegged at full?

Also, the right turn signal doesn't automatically turn off about every fifth time I use it. I have to manually turn it off. It also seems very hard to turn the blinker lights on compared to my previous ride, 2018 GMC HD Denali.

BuckWallace · Monday at 04:02 PM

I'd give it some more time/miles and see if the fuel gauge moves at all. As for the blinkers, my turn signal lever on my 2024 has always been very hard to turn on and off. Turning off a right signal was especially difficult, so I had the dealer look at it and they agreed. They replaced the lever and now turning off a left signal is difficult... Not sure if it's the lever or something in the steering column.

Chaser777 · Monday at 04:07 PM

thanks for the reply. I'll give it more time. See what happens. I also noticed the shifter lever for going into gear seems very stiff. Have to pull pretty hard to get it into gear. Not a big deal, but so much different than previous GMC truck. Love the truck so far. For a 3/4 ton, ride isn't too bad and I have a snow plow/camper prep package on it too.

revrnd · Tuesday at 05:31 PM

I have a 2024 with 4500 miles on it. No issues that you speak of. In fact I've noticed the turn signal 'cancels' w/ a reduced turn. In the past turning into my village on a slight curve I'd always forget to turn off the turn signal and it would continue to flash. W/ this truck, when I correct the wheel, the turn signal turns off.

bruceb58 · Tuesday at 06:23 PM

What does the MyGMCApp say what is has in percentage? It will have a number that is actually read from the sensor and displayed as a number.

Chaser777 · 2024-11-28T02:34:40Z

So as far as the gas gauge goes, it finally did move off of Full. Seems to be working. I can’t get the GMC app to work to read percentage. Been on the phone with onstar 3 different times, plus the half hour initially spent at the dealer trying to unsuccessfully activate it when i picked the truck up. Last call with onstar they said i should make an appointment with the dealer as they now couldn’t even locate my truck via GPS. Suspect a hardware issue. Used the GMC app with my 2018 Denali and it worked flawlessly. Really enjoyed it.
The right blinker problem continues. Made four consecutive right turns going around the neighborhood and it wouldn’t automatically click off for any of those turns. If I turn the wheel back and forth a couple times after the turn, it would then click off. Always works normally when using the left blinker. It doesn’t seem like it takes any extra force to turn right blinker on versus left blinker. I tried to just leave it blinking after the right hand turn to see if it would eventually turn off but went over a block and it still didn’t click off. Im just going to keep an eye on it and hope it gets better. Can’t see taking it back for this minor issue, but will let them know about it next week. Loving everything else about the truck so far.