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.

Any message will clear when the vehicle's condition is no longer present. To acknowledge a message and clear it from the display, press any of the three DIC buttons. The warning message will come back on the next time the vehicle is turned off and back on if the condition is still present. With most messages, a warning chime will sound when the message is displayed. Your vehicle may have other warning messages.

AUTO LIGHTS OFF: This message will display if the automatic headlamp system is disabled with the headlamp switch.

AUTO LIGHTS ON: This message will display if the automatic headlamp system is enabled with the headlamp switch.

BRAKE FLUID: This message will display if the ignition is in 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.

CHANGE OIL SOON: This message will display when the life of the engine oil has expired and it should be changed. When you acknowledge the Change Engine Oil message by clearing it from the display, you still must reset the engine oil life system separately. See Engine Oil Life System , Engine Oil , and Scheduled Maintenance for more information.

CHECK GAS CAP: This message will display if the gas cap has not been fully tightened. You should recheck your gas cap to ensure that it is on properly. A few driving trips with the cap properly installed should turn the message off.

DOOR AJAR: This message will display if one or more of the vehicle's doors are not closed properly. When this message displays, you should make sure that the door is closed completely.

ENGINE DISABLED: This message will display if the starting of the engine is disabled. Have your vehicle serviced immediately by your GM dealer.

ENG (Engine) PWR (Power) REDUCED: This message will display to inform you that the vehicle has reduced engine power to avoid damaging the engine.

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

KEY FOB BATT (Battery) LOW: This message will display if the remote keyless entry transmitter battery is low. You should replace the battery in the transmitter. See "Battery Replacement" under Remote Keyless Entry (RKE) System Operation .

LOW COOLANT: 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.

LOW FUEL: This message will display when your vehicle is low on fuel. You should refill the fuel tank as soon as possible. You will also see a low fuel warning light on the instrument panel cluster. See Low Fuel Warning Light , Fuel , and Filling the Tank .

LOW WASHER FLUID: This message will display when your vehicle is low on windshield washer fluid. You should refill the windshield washer fluid reservoir as soon as possible. See "Adding Washer Fluid" under Windshield Washer Fluid .

PARKING BRAKE: This message will display if the parking brake is left engaged and you try to drive away. See Parking Brake for more information.

POWER STEERING: This message will display if a problem has been detected with the electric power steering. Have your vehicle serviced immediately by your GM dealer.

SERVICE AIR BAG: There is a problem with the airbag system when this message appears. Have your vehicle serviced immediately by your GM dealer.

TRUNK AJAR: This message will display when the trunk lid of your vehicle is not closed completely. You should make sure that the trunk lid is closed completely. See Trunk for more information.