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GMC Models

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Warning Lights Explained

Charge System Warning

Charge System Warning Example
If your GM has detected an issue with the power from the battery not making it to the electrical system this warning will appear. It looks like a battery from the side with the positive and negative icons inside of it, most likely illuminated red. The cause of this can range from a dying (or not sufficiently charged) battery through to a faulty alternator or even a problem with the wiring.

Brake Warning

Brake Warning Example
An icon showing the word BRAKE in capital letters illuminated red signifies a problem with the brakes. It could be as simple as the parking brake (or handbrake as it's known in some regions) being left on while attempting to drive off. On the other end of the spectrum, it could be suggesting that a problem with the brake system has occurred and if this is the case seek professional help.

Oil Warning

Oil Warning Example
What looks like an old-fashioned oil lamp with a drip of oil coming from it could be a warning that you have an issue with your oil in the engine. The severity of this can range from a temporary low pressure at the point of the sensor all the way through to a broken pump. Try turning the car off and then on again to see if it persists, if it does then seek a trained GM mechanic.

Engine Temperature Warning

Engine Temperature Warning Example
A red illuminated icon showing a thermometer floating in a liquid is evidence of an overheating engine. This may be temporary and by stopping and letting your GM cool down you could get rid of it. If it persists then it is best to stop driving your car and let a mechanic look at it to avoid further damage.

Airbag Warning

Airbag Warning Example
If you see an icon that looks like the side profile of a passenger in a car with a large circle in front of them then this may mean there is a problem with one or more airbags. Try turning your car off and on again to see if that fixes the error, if this doesn't then seek a trained mechanic as soon as possible.

Security Indicator

Security Indicator Example
An icon showing the front of a car with a lock overlapping it represents the security warning indicator in a GM. This warning can be quite vague as it can cover various security systems in different GM models. It could be as simple as a low battery in your keyfob all the way through to a fault in your immobilizer.

Seat Belt Reminder

Seat Belt Reminder Example
A simple reminder icon that appears as a passenger with a set of seat belts around them is telling you that an occupant isn't wearing their safety belt. The car knows this by detecting weight on one or more car seats using a pressure pad underneath the seat. If this light persists with no one sat on any of the seats and you have no cargo resting on them either then you may have a fault somewhere.

Tire Pressure Warning

Tire Pressure Warning Example
What looks like an exclamation mark in a vase-shaped icon is a warning concerning the tire pressures. This may affect one or more tires and if you find that your tire pressures are in order then it may also represent a faulty sensor that needs replacing.

Key Warning

Key Warning Example
If you see a red key with an exclamation mark through it stay on solidly then a fault has been detected in the key-less entry system. This will most probably affect the key-less start system too if the key is not detected so keep that in mind. Seek help from a Mazda dealership as soon as possible.

Brake Pedal Operation Warning

Brake Pedal Operation Warning Example
A red shoe pushing on a brake pedal in a Mazda would signal that the auto-hold brake function has stopped working and is usually followed by an audio alert. If an audio alert is not accompanying the flashing at the same time then it could mean that the brake auto-hold system is struggling to hold the vehicle in place. The brake auto-hold system is used to hold the car in place even if you take your foot off the brake pedal and is canceled when you touch the accelerator.

Master Warning Light

Master Warning Light Example
If your General Motors car is displaying a solid (or the outline of a) triangle with an exclamation mark inside as a solid illumination of yellow/orange or even red then this is a master warning. This is a serious fault that means your car is suffering from a fault and should be accompanied by a message - if not check with a trained mechanic to find out what is causing this.

Check Engine Light

Check Engine Light Example
If the words "check engine" or an outline of a transmission flashes up persistently in orange (or red) on your GMC dashboard then that means your engine has detected a fault. Try switching your car off and then on again and see if the problem persists (as random fluctuations on the sensors can set it off), if it does then seek help from a trained mechanic.

Electronic Parking Brake Warning

Electronic Parking Brake Warning Example
A letter "P" in a circle with an exclamation mark and 2 brake pads on the outside signals that your GMC's electronic parking brake system is faulty. This is a serious issue that needs to get sorted as quickly as possible, not being able to apply the parking brake can be dangerous during driving and when parking your car.

Driver Attention Alert

Driver Attention Alert Example
An orange coffee cup lighting up on your GMC dashboard is most probably the car telling you that the driver's attention alert system is faulty. This system that monitors driving patterns to detect a driver that is less attentive is important for safety so get the car check out by a professional.

Radar Cruise Control Warning

Radar Cruise Control Warning Example
A speedometer with a car and arrow hovering above it would suggest that there is a problem with your radar cruise control system in your GMC. If the light remains on even after switching the car off seek help from a GMC dealership.

Traction Control OFF

Traction Control OFF Example
A warning light showing a car with waves underneath but including the word "OFF" suggests that the traction control system has been turned off. Turning the traction control off in most cars is harder than accidentally flicking a switch and usually resets itself shortly afterward anyway. If you experience this warning constantly then there may be a fault in the system and you should get it checked out.

Traction Control Warning

Traction Control Warning Example
A solid yellow/orange illuminating warning on the dashboard showing a car with wavy lines below is a fault in the traction control system. The indicator will light up for a small amount of time if it detects a loss of traction and it interferes with the control of the car. If the symbol remains on constantly then it is important that a trained GMC mechanic checks it out.

Smart Brake Warning

Smart Brake Warning Example
A series of cars with a star and an exclamation mark next to them could be a sign that the smart brake system is faulty. This is the name of the GMC braking system that uses radar to detect an obstacle in front of the car and applies the brakes automatically. Driving without this safety aid is not recommended and the cause could be down to a dirty radar sensor.

LED Headlight Warning

LED Headlight Warning Example
A downward-facing light-bulb with an exclamation mark inside lighting up on the dashboard of your GMC represents that the LED headlight system is faulty. The danger of this is that as soon as you require your lights (at night or in a tunnel) you may find that they don't work, seek help from a trained mechanic or Mazda Repairer.

Power Steering Warning

Power Steering Warning Example
A steering wheel with an exclamation mark next to it illuminated orange/yellow or even red suggest a problem with the power steering in your GMC. If the warning light remains after you have restarted the car then seek help from a trained mechanic.

Blind Spot Warning

Blind Spot Warning Example
A warning light consisting of 2 cars side by side with a radar effect between them is most probably your blind-spot warning system informing you it has detected something. The blind spot is commonly known as the area of vision that is missing from most drivers' field of view. Seeing this warning flash-up should prompt you to double-check your blind spot before merging lanes or turning.

Lane Keep Assist Warning

Lane Keep Assist Warning Example
A symbol of what appears to be a car straying away from between two lines (solid or broken) represents that your lane-keep assist system is faulty. If a restart of the car does not fix this then the system is most probably faulty and needs to be seen by a technician. Continuing to drive without this system is possible but it can't be relied on while this warning light is illuminated.

Automatic Transaxle Warning

Automatic Transaxle Warning Example
A simple warning that shows the letters "AT" on your dashboard is most probably a warning that your automatic transaxle is faulty. The automatic transaxle is the combination of an automatic transmission and axle which connects directly to the differential driving the wheels. Continuing to drive while this warning is present is not advised as it can damage the transmission leading to a large repair bill.

ABS Warning

ABS Warning Example
If the letters "ABS" light up orange on your dashboard persistently and do not go away after restarting the car then you may have an issue with the brake-assist system. Continuing to drive while the ABS system is not fully functioning is not advised but possible. You will have lost the added benefit that ABS brings in potential accidents due to a loss of traction while braking. Seek help from a trained mechanic or GMC dealership as soon as possible.

4WD Warning

4WD Warning Example
This is a pretty self-explanatory warning light as it tells you the problem is with the four-wheel-drive (or all-wheel drive) system. If your model of General Motors car allows it then it may disengage the rear wheels and continue to drive on the front until it's fixed (or vice-versa). If it is an orange light then it should be safe to continue to drive for a short period but with caution. Seek professional help as soon as possible.

High Beam Control Warning

High Beam Control Warning Example
The high beam control system diverts the high-powered lights away from oncoming traffic and if you see an "A" in a semi-circle with lines coming from it then the system has detected a fault. Seeking help from a trained mechanic if the problem continues even after switching the car off is wise as this can be dangerous for other road users if not fixed.

Low Washer Fluid Warning

Low Washer Fluid Warning Example
A yellow/orange warning light showing what looks like a fountain over an open book suggests that the windscreen washing fluid is low. Top this up under the bonnet by looking for a cap that has a similar (if not the same) looking symbol on top with water mixed with anti-freeze (or a ready-mixed solution). If the warning light remains on even after you top the fluid up and you have restarted the car check with a trained mechanic.

About GMC

GMC Logo

The warning lights help drivers and passengers understand what the problem is with their car. On this page, you will learn these different dashboard symbols that appear on a GM car’s dashboard.

The first thing you need to do when a warning light appears, of course, is to pull over safely and stop the car as soon as possible. Drivers typically have a few minutes before they start experiencing any serious problems with their vehicle.

About General Motors

The General Motors Corporation is one of the largest car manufacturers in the world, with a history that spans more than 100 years. It is also one of the only remaining American automobile companies to survive and thrive since its introduction in 1908.

This company has been through many changes over those years, including several mergers and acquisitions, but it has never lost sight of its initial goal: “To be number one or two in every market we serve.”

GM’s success can be attributed to their ability to innovate and adapt as necessary for each new generation of vehicles they produce. Their constant improvements have earned them a reputation for safety and reliability among buyers who are looking for cars that will last. GM’s warning lights help drivers identify problems quickly so they

Company History

General Motors traces its roots back to 1908 when William Crapo Durant began the “GM Company” supplying parts for Buick which was an early automotive manufacturer along with Oldsmobile and Oakland (Pontiac). In 1912, General Motors acquired Cadillac and soon after it also absorbed Elmore, Oakland

By 1920 General Motors became the largest automotive company in the world with more than 500 car models. In 1957 it introduced its first-ever V-shaped V engine block which was later on used by many automakers around the world.

One of the most recent cars made by General Motors is their 2016 Chevrolet Camaro. This car offers many luxury features, including heated leather seats and a backup camera for easy parking. The engine on this model has six cylinders with an automatic transmission system that allows you to choose between manual or automatic shifting depending on your mood at any

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