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

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

BRAKE FLUID: This message will display to inform the driver that the brake fluid level is low while the ignition is in ON. 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 OIL SOON 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 make sure 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. 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.

GATE AJAR: If your vehicle has a liftgate, this message will display when the liftgate of your vehicle is not closed completely. You should make sure that the liftgate is closed completely. See Liftgate for more information.

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 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 .

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

PUSH PARK PEDAL: This message is displayed if the parking brake is left engaged. See Parking Brake for more information.

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: If your vehicle has a trunk, 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.