GMC Troubleshooting Questions? Ask a Mechanic for Answers
Hello. There should be an audible seat belt alarm for your van. It is part of the multi function alarm module. Do you get any audible alerts if you leave your head lights on when exiting the van? or when you put your key in the ignition?
I have to get going for the night. I will check messages first thing in the morning.
I understand your frustration. According to the manual, there is an audible tone for the seat belt indicator. In the interior fuse panel, fuse number 5 is the fuse for the multifunction alarm module, so if that fuse is blown or removed your seat belt alarm wont make a noise.
Ok. That contradicts what my software says a little, but that's ok. It is possible that there is a bad fuse somewhere. I would definitely check all the fuses before going any further. I would bet that if the previous owner wanted to disable the seat belt warning, they either disconnected the wire at the seat belt receiver, or pulled a fuse. According to what I have, it should be fuse 5.
Honestly, I do not think that it does have chime, however I dont have access to one at the moment to compare so I was just going by what my shop management software was indicating. My shop management software indicates that it does have chime, and that it is part of the multifunction alarm module powered by fuse 5. I was honestly a little surprised to read that, since I did not believe that it had a seat belt chime. I have spotted discrepancies in that software in the past, although rare. I didn't want to tell you that it did not have a chime when alldata indicated that it did. I am definitely thinking now more than before that it does not in fact have chime.
When you plug your seat belt in, does the little red warning indicator go out?
I am going to opt out in case someone else here knows with 100% certainty whether or not this came with an audible warning since I can not say that I am positive one way or the other. If it did, and there was a simple way of disabling it that a lot of people did then I am not aware of it, but someone here may know and be able to guide you in the right direction.