Humming behind the dash board and truck won't start, what is the humming
What is your question?
The truck won't start and there is continual humming behind the dash board even with no engine on. What is the humming? Also all the dash lights come on etc, so couldn't be battery.
What makes this problem better or worse?
Humming under dash stays all the time
How long has your 2009 GMC Sierra 2500 HD had this problem?
RepairPal Certified shops can diagnose and repair your 2009 GMC Sierra 2500 HD. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. I'm sorry to hear you're having trouble with your vehicle.
The humming sound you're hearing behind the dashboard of your Sierra 2500 HD, along with the truck not starting, could indicate an issue with the electrical system. It's possible that a component like the fuel pump relay, blower motor, or an electronic module is malfunctioning, causing it to hum continuously. This could be discharging the battery while the truck is turned off.
You can inspect the connections around the dashboard for loose wires or components. If these steps don’t resolve the issue, it might be best to consult with a trusted repair shop that can diagnose the problem more thoroughly.
If you need more advice, have any other questions about your vehicle, or would like to get connected to a RepairPal Certified shop near you, we have you covered. Give us a call at 877-913-1554, and we will happily help you out!
