Heres a new one for me and didnt see anything when searched
I have a 2020 LT trailboss 5.3l today i went and changed the oil myself. Did it how ive done it for years. I drained the oil, changed filter, put plug in, and started to fill it up. Got about 6 quarts in it and was grabbing my last 2 quarts when the truck randomly beeped 3 times and the lights flashed. Thought that was odd. Finished filling it up. Was putting some stuff away in the bed and it did it again. 3 horn beeps with lights flashing.
This is my 2nd oil change on this truck and the first did not do this. So im kinda confused.
The truck was obviously off the whole time and the fob was in my pocket outside truck. All doors closed. Hood up and tailgate down. Im just curious if anyones had this happen?
I turned truck in after.... it started fine. No lights or anything so im not sure what that was.
Thoughts?