GM Service Manual Online
For 1990-2009 cars only

These messages will appear if there is a problem detected in one of your vehicle's systems. The text messages are the same for both the base audio and Navigation systems unless otherwise indicated.

You must acknowledge a message to clear it from the screen for further use. To clear a message, press the reset button.

Be sure to take any message that appears on the screen seriously and remember that clearing the message will only make the message disappear, not the problem.

AUTOMATIC LIGHTS OFF

This message will display when the automatic headlamps are turned off. See Headlamps for more information.

AUTOMATIC LIGHTS ON

This message will display when the automatic headlamps are turned on. See Headlamps for more information.

BATTERY NOT CHARGING SERVICE CHARGING SYS (System)


Object Number: 812700  Size: A1

This symbol appears with the BATTERY NOT CHARGING SERVICE CHARGING SYS message.

This message will display when a problem with the charging system has been detected. Have your vehicle serviced by your GM dealer.

BATTERY SAVER ACTIVE

This message will display when the system detects that the battery voltage is dropping beyond a reasonable level. The battery saver system will start reducing certain features of the vehicle that you may not be able to notice. At the point that the features are disabled, this message is displayed. It means that the vehicle is trying to save the charge in the battery.

Turn off all unnecessary accessories to allow the battery to recharge.

The normal battery voltage range is 11.5 to 15.5 volts. You can monitor battery voltage on the DIC by pressing the information button until you find BATTERY VOLTS.

BATTERY VOLTAGE HIGH


Object Number: 812700  Size: A1

This symbol appears with the BATTERY VOLTAGE HIGH message.

This message will display when the electrical charging system is overcharging the battery. When the system detects that the battery voltage is above approximately 16 volts, this message will be displayed.

To reduce the charging overload, use the vehicle's accessories. Turn on the exterior lamps and radio, set the climate control on AUTO and the fan speed on the highest setting, and turn the rear window defogger on.

The normal battery voltage range is 11.5 to 15.5 volts when the engine is running. You can monitor battery voltage on the DIC by pressing the information button until you find BATTERY VOLTS.

BATTERY VOLTAGE LOW


Object Number: 812700  Size: A1

This symbol appears with the BATTERY VOLTAGE LOW message.

When this message displays, the electrical system is charging less than 10 volts or the battery has been drained.

If this message appears immediately after starting the engine, it is possible that the generator can still recharge the battery. The battery should recharge while driving but may take a few hours to do so. Consider using an auxiliary charger to boost the battery after returning home or to a final destination. Make sure you follow the manufacturer's instructions.

If this message appears while driving or after starting your vehicle and stays on, have it checked immediately to determine the cause of this problem.

To help the generator recharge the battery quickly, you can reduce the load on the electrical system by turning off the accessories.

The normal battery voltage range is 11.5 to 15.5 volts. You can monitor battery voltage on the DIC by pressing the information button until you find BATTERY VOLTS.

CHANGE ENGINE OIL SOON

When this message displays, it means that service is required for your vehicle. See your GM dealer. See Engine Oil and Scheduled Maintenance for more information.

When you reset the CHANGE ENGINE OIL SOON message by clearing it from the display, you still must reset the engine oil life system separately. For more information on resetting the engine oil life system, see Engine Oil Life System .

CHECK BRAKE FLUID

This message will display if the ignition is on to inform the driver that the brake fluid level is low. Have the brake system serviced by your GM dealer as soon as possible. See Brake System Warning Light for more information.

CHECK COOLANT LEVEL

This message will display when there is a low level of engine coolant. Have the cooling system serviced by your GM dealer as soon as possible. See Engine Coolant for more information.

CHECK GAS CAP

When this message displays, the gas cap has not been fully tightened. You should recheck the gas cap to ensure that it is on and tightened properly.

CHECK OIL LEVEL

This message will display when the oil level is low. See Engine Oil for more information on checking your engine oil.

CHECK TIRE PRESSURE


Object Number: 1411350  Size: A1

This symbol appears with the CHECK TIRE PRESSURE message.

If your vehicle has a Tire Pressure Monitor (TPM) system, this message will display when one or more of the vehicle's tires are low or high. See DIC Controls and Displays for information on checking your vehicle's tire pressures.

CHECK WASHER FLUID


Object Number: 829962  Size: A1

This symbol appears with the CHECK WASHER FLUID message.

When this message displays, it means that your vehicle is low on windshield washer fluid. You should refill the tank as soon as possible. See Windshield Washer Fluid for more information.

CLEAN RADAR

When this message displays, it means that the Adaptive Cruise Control system is disabled because the radar is blocked and cannot detect vehicles in your path. It may also activate during heavy rain or due to road spray. To clean the system, see "Cleaning the System" under Adaptive Cruise Control .

COMPETITIVE DRIVING (STS-V Only)

When this message displays, it means that the competitive driving mode is turned on with the traction control button. The TC (traction control) light will be on when the competitive driving mode is on. The traction control system will not operate while in competitive driving mode. You should adjust your driving accordingly. See Competitive Driving Mode for more information.

DRIVER DOOR AJAR


Object Number: 1411457  Size: A1

This symbol appears with the DRIVER DOOR AJAR message.

When this message displays, it means that the driver's door was not closed completely. You should make sure that the driver's door is closed completely.

ENGINE COOLANT HOT IDLE ENGINE

Notice: If you drive your vehicle while the engine is overheating, severe engine damage may occur. If an overheat warning appears on the instrument panel cluster and/or DIC, stop the vehicle as soon as possible. Do not increase the engine speed above normal idling speed. See Engine Overheating for more information.


Object Number: 812823  Size: A1

This symbol appears with the ENGINE COOLANT HOT IDLE ENGINE message.

This message will display when the engine coolant temperature is too hot. Stop and allow the vehicle to idle until it cools down. See Engine Coolant Temperature Warning Light .

See Overheated Engine Protection Operating Mode for information on driving to a safe place in an emergency.

ENGINE HOT - AC (Air Conditioning) OFF

This message will display when the engine coolant becomes hotter than the normal operating temperature. See Engine Coolant Temperature Gage . To avoid added strain on a hot engine, the air conditioning compressor is automatically turned off. When the coolant temperature returns to normal, the air conditioning compressor will turn back on. You can continue to drive your vehicle.

If this message continues to appear, have the system repaired by your GM dealer as soon as possible to avoid damage to your engine.

ENGINE OVERHEATED STOP ENGINE

Notice: If you drive your vehicle while the engine is overheating, severe engine damage may occur. If an overheat warning appears on the instrument panel cluster and/or DIC, stop the vehicle as soon as possible. Do not increase the engine speed above normal idling speed. See Engine Overheating for more information.

This message will display when the engine has overheated. Immediately look for a safe place to pull your vehicle over and turn the engine off right away to avoid severe engine damage. See Engine Overheating and Overheated Engine Protection Operating Mode . A chime will also sound when this message is displayed.

ENGINE POWER REDUCED

This message informs you that the engine power is being reduced to protect the engine from damage. There could be several malfunctions that might cause this message. Reduced engine power can affect the vehicle's ability to accelerate. If this message is on, but there is no reduction in performance, proceed to your destination. The performance may be reduced the next time the vehicle is driven. The vehicle may be driven at a reduced speed while this message is on, but acceleration and speed may be reduced. Anytime this message stays on, the vehicle should be taken to your GM dealer for service as soon as possible.

FUEL LEVEL LOW


Object Number: 812212  Size: A1

This symbol appears with the FUEL LEVEL LOW message.

When this message displays, it means that your vehicle is low on fuel. You should refill the tank as soon as possible. A single chime will sound when this message is displayed.

HOOD AJAR


Object Number: 1411447  Size: A1

This symbol appears with the HOOD AJAR message.

When this message displays, it means that the hood was not closed completely. You should make sure that the hood is completely closed.

ICE POSSIBLE

This message will display when the outside temperature is cold enough to create icy road conditions.

KEY FOB BATTERY LOW

When this message displays, it means that the battery in your keyless access transmitter is low. Replace the battery in the transmitter. See "Battery Replacement" under Keyless Access System Operation .

LEFT REAR DOOR AJAR


Object Number: 1411461  Size: A1

This symbol appears with the LEFT REAR DOOR AJAR message.

When this message displays, it means that the driver's side rear door was not closed completely. You should make sure that the door is closed completely.

NO FOBS DETECTED

This message is displayed if the vehicle does not detect the presence of a keyless access transmitter when you have attempted to start the vehicle or a vehicle door has just closed. The following conditions may cause this message to appear:

    • Driver-added equipment plugged into the accessory power outlet on the center console is causing interference. Examples of these devices are cell phones and cell phone chargers, two-way radios, power inverters, or similar items. Try moving the keyless access transmitter away from these devices when starting the vehicle. In addition, PDA devices and remote garage and gate openers may also generate Electromagnetic Interference (EMI) that may interfere with the keyless access transmitter. Do not carry the keyless access transmitter in the same pocket or bag as these devices.
    • The vehicle is experiencing Electromagnetic Interference (EMI). Some locations, such as airports, automatic toll booths, and some gas stations, have EMI fields which may interfere with your keyless access transmitter.

Object Number: 1459895  Size: B3

If moving the transmitter to different locations within the vehicle does not help, place the transmitter in the center console transmitter pocket with the buttons facing forward and then press the START button.

NO FOB OFF OR RUN?

When this message displays, it means that the keyless access transmitter is not detected inside the vehicle while you are trying to turn the ignition off. Your vehicle may be near a strong radio antenna signal causing the keyless access system to be jammed. The vehicle will remain in ACC until OFF or START has been pressed or 10 minutes has expired. If you turn the ignition off and you cannot find the keyless access transmitter, you will not be able to restart the vehicle. The keyless access transmitter needs to be inside of the vehicle in order for the vehicle to start. See Starting the Engine for more information.

OIL PRESSURE LOW STOP ENGINE

Notice: If you drive your vehicle while the engine oil pressure is low, severe engine damage may occur. If a low oil pressure warning appears on the instrument panel cluster and/or DIC, stop the vehicle as soon as possible. Do not drive the vehicle until the cause of the low oil pressure is corrected. See Engine Oil for more information.

A multiple chime will sound when this message is displayed. See Engine Oil for more information.

PASSENGER DOOR AJAR


Object Number: 1411462  Size: A1

This symbol appears with the PASSENGER DOOR AJAR message.

When this message displays, it means that the passenger's side front door was not closed completely. You should make sure that the door is closed completely.

PRESS START AND BRAKE TO START ENGINE

When this message displays, it means that you need to press down on the brake pedal while pressing the start button on the electronic keyless ignition when trying to start your vehicle. See Starting the Engine for more information.

RADAR CRUISE NOT READY

When this message displays, it means that the Adaptive Cruise Control system will not activate due to a temporary condition. Your vehicle does not require service. This message will also display when either of the following conditions occurs:

    • The driver turns off the head-up display (HUD) while the Adaptive Cruise Control is engaged.
    • The driver attempts to engage the Adaptive Cruise Control while the HUD is off.

If this message appears when you attempt to activate the system, continue driving for several minutes and then try activating the system again.

RIGHT REAR DOOR AJAR


Object Number: 1411464  Size: A1

This symbol appears with the RIGHT REAR DOOR AJAR message.

When this message displays, it means that the passenger's side rear door was not closed completely. You should check to make sure that the door is closed completely.

SERVICE AC (Air Conditioning) SYSTEM

This message will display when the electronic sensors that control the air conditioning and heating systems are no longer working. Have the climate control system serviced by your GM dealer if you notice a drop in heating and air conditioning efficiency.

SERVICE AIR BAG

This message will display when there is a problem with the airbag system. Have your vehicle serviced by your GM dealer immediately. See Airbag Readiness Light for more information.

SERVICE BRAKE ASSIST

This message will display when a problem with the panic brake assist system has been detected. Have your vehicle serviced by your GM dealer.

SERVICE RADAR CRUISE

When this message displays, it means that the Adaptive Cruise Control system is disabled and needs service. See your GM dealer.

SERVICE STABILITY SYS (System)

Your vehicle may have a vehicle stability enhancement system called StabiliTrak®.

See StabiliTrak® System . The SERVICE STABILITY SYS message will display if there has been a problem detected with StabiliTrak®.

If the SERVICE STABILITY SYS message comes on while you are driving, pull off the road as soon as possible and stop carefully. Try resetting the system by turning the ignition off then back on. If the SERVICE STABILITY SYS message still stays on or comes back on again while you are driving, your vehicle needs service. Have the StabiliTrak® System inspected by your GM dealer as soon as possible.

SERVICE STEERING SYS (System)

Your vehicle may have a speed variable assist steering system. See Steering .

The SERVICE STEERING SYS message will display if a problem is detected with the speed variable assist steering system. When this message is displayed, you may notice that the effort required to steer the vehicle increases or feels "heavier," but you will still be able to steer the vehicle.

SERVICE SUSPENSION SYS (System)

This message will display when the suspension system is not operating properly. Have your vehicle serviced by your GM dealer.

SERVICE TIRE MONITOR

If your vehicle has a Tire Pressure Monitor (TPM) system, this message will display if the TPM system is not working properly. Have your vehicle serviced by your GM dealer as soon as possible.

SERVICE THEFT SYSTEM

This message will display when there is a problem with the hood open and closed switches. The switches may need to be replaced. When this message is displayed, the theft-deterrent system will still be protecting the interior of the vehicle, however, the hood area will not be protected at this time. Also, the remote start function will not work when this message appears. See your GM dealer for service.

SERVICE TRANSMISSION

This message will display when there is a problem with the transmission of your vehicle. Have your vehicle serviced by your GM dealer.

SERVICE VEHICLE SOON

This message will display when a non-emissions related malfunction occurs. Have your vehicle serviced by your GM dealer as soon as possible.

SPEED LIMITED TO XXX

This message will display when your vehicle speed is limited to XXX, mph in English mode and km/h in Metric mode, because the vehicle detects a problem in the suspension system. Have your vehicle serviced by your GM dealer.

STABILITY SYS (System) ACTIVE

The STABILITY SYS ACTIVE message will display any time StabiliTrak® is actively assisting you with directional control of the vehicle. Slippery road conditions may exist when this message is displayed, so adjust your driving accordingly. This message may stay on for a few seconds after StabiliTrak® stops assisting you with directional control of the vehicle. See StabiliTrak® System for more information.

STABILITY SYS (System) NOT READY

The STABILITY SYS NOT READY message will display if StabiliTrak® is not ready. Two conditions may cause this message to display.

The first condition may be that the vehicle needs to be driven in a straight line until the sensors are centered. Once the sensors are centered, the StabiliTrak® system will be ready and the STABILITY SYS READY message will display.

The second condition that may cause this message to display is when you first start your vehicle and drive away during cold winter weather. This is normal. The system needs to warm up. You can acknowledge this message by pressing the reset button.

The StabiliTrak® performance is affected until the STABILITY SYS READY message is displayed in the DIC. See StabiliTrak® System for more information.

STABILITY SYS (System) OFF

The STABILITY SYS OFF message will display any time you turn off StabiliTrak® using the TC (traction control) on/off button. See Traction Control System (TCS) for more information. When this message has been displayed, StabiliTrak® is no longer available to assist you with directional control of the vehicle. Adjust your driving accordingly. See StabiliTrak® System for more information.

STABILITY SYS (System) READY

The STABILITY SYS READY message will display any time you turn back on StabiliTrak® using the TC (traction control) on/off button. See Traction Control System (TCS) for more information. When this message has been displayed, StabiliTrak® is ready to assist you with directional control of the vehicle if needed. See StabiliTrak® System for more information.

STARTING DISABLED THEFT PROBLEM

This message will display when incorrect conditions exist within the theft-deterrent system. See your GM dealer for service.

STARTING DISABLED THROTTLE PROBLEM

This message will display when your vehicle's throttle system is not functioning properly. Have your vehicle serviced by your GM dealer.

THEFT ATTEMPTED


Object Number: 822610  Size: A1

This symbol appears with the THEFT ATTEMPTED message.

This message will display if the theft-deterrent system has detected a break-in attempt while you were away from your vehicle.

TRACTION ACTIVE

This message will display when the traction control system is actively limiting wheel spin. Slippery road conditions may exist if this message is displayed, so adjust your driving accordingly. The message will stay on for a few seconds after the traction control system stops limiting wheel spin. See Traction Control System (TCS) for more information.

TRANS (Transmission) HOT IDLE ENGINE

This message will display when the transmission fluid in your vehicle is too hot. Stop the vehicle and allow it to idle until the transmission cools down or until this message is removed.

TRUNK OPEN


Object Number: 1411452  Size: A1

This symbol appears with the TRUNK OPEN message.

When this message displays, it means that the trunk was not closed completely. You should make sure that the trunk is closed completely.

TURN SIGNAL ON

If you drive your vehicle for more than about 1 mile (1.6 km) with a turn signal on, this message will display as a reminder to turn off the turn signal. A multiple chime will sound when this message is displayed.