What your vehicle is trying to tell you
What do the dashboard warning lights in my vehicle mean?
Have you ever been in a situation where a warning light came on and you did not know what it meant? That can be scary! Should you pull over or can you make it home? What do the dashboard warning lights in my vehicle mean? We have put together a brief guide to help you understand what the dashboard warning lights are in your GMC vehicle and what they mean.
GMC dashboard warning lights and meanings
We understand that there are many GMC vehicles on the road and that not all of them have the same features. We tried to split the information below into warnings that are standard, and warnings that are on select vehicles.
Airbag Readiness Light
If this light it does not come on or it stays on when you start your vehicle, there may be an electrical problem with the system and it should be checked.
Antilock Brake System Warning Light
This light should come on for a moment when starting your vehicle. If it does not, your vehicle should be looked at.
Brake System Warning Light
If this light does not come on for a moment when starting your vehicle, it should be looked at right away.
Charging System Light
This light should come on when turning the key in the ignition, but not turning on the engine. If it stays on or turns on, there might an issue with the charging system. Your vehicle should be looked at as soon as possible.
Check Engine Light
If the light flashes as you are driving it is probably misfiring. But, if it stays on steady, a glitch has been found.
Driver Safety Belt Light
This reminds the driver to buckle up and will continue to remind the driver until the belt is clicked.
Engine Coolant Temperature Gauge
If you see this light, pullover as soon as possible and let your vehicle cool off.
Engine Oil Pressure Light
This light should come on as the vehicle is started. If it stays on, oil is not flowing as it should be and your vehicle should be looked at.
High-Beam On Light
This comes on when the high-beam headlights are used.
Low Fuel Light
When you are running out of fuel, you will see this light.
Passenger Safety Belt Reminder Light
This is meant to remind your passenger to buckle up.
If the light stays on and the vehicle does not start, there is probably an issue with the theft-deterrent system.
This should come on for a moment when starting your vehicle. If it does not, have the vehicle serviced.
Traction Control System/StabiliTrak®Light
If this light does not turn on while starting your vehicle, have the vehicle serviced.
Traction Off light
This light should come on briefly when starting the vehicle. If it does not, have your vehicle serviced
Tire Pressure Light
If this light stays on there may be one or more of your tires that are considerably underinflated. However, if it blinks first then stays on, there is probably a malfunction with the system and it should be serviced.
Some GMC vehicle might also have the following addition dashboard lights:
You will see a white light when the system is on and ready, and it will turn green when set and in use.
Door Ajar Light
If a door is open or not properly latched, you will see this light.
Fog Front Lamp Lights
This light comes on when you are using the fog lamps.
Lamps on Reminder
If you see this, your lamps are on.
Lane Departure Warning Light
This light will briefly light up when the vehicle starts. If it does not, have vehicle serviced. When using the system, the green light means it is on and ready to operate, and the amber light means a lane has been crossed without a turn signal.
Vehicle Ahead Indicator
You will see a green light when there is a vehicle ahead of you.