GM Service Manual Online
For 1990-2009 cars only

These messages appear if there is a problem detected in one of your vehicle's systems.

A message will clear when that condition is no longer present on the vehicle. To acknowledge a message and clear it from the display, press any of the three DIC buttons. If the condition is still present, the warning message will come back on the next time the vehicle is turned off and back on. With most messages, a warning chime sounds when the message displays. Your vehicle may have other warning messages.

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

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

BRAKE FLUID: This message displays, while the ignition is on, when the brake fluid level is low. The brake system warning light on the instrument panel cluster also comes on. See Brake System Warning Light for more information. Have the brake system serviced by your dealer/retailer as soon as possible.

CHANGE OIL SOON: This message displays when the life of the engine oil has expired and it should be changed. When this message is acknowledged and cleared from the display, the engine oil life system must still be reset separately. See Engine Oil Life System , Engine Oil , and Scheduled Maintenance for more information.

CHECK CARGO TOP: If your vehicle has a retractable hardtop, this message displays if the cargo divider is not in place when operating the retractable hardtop. Open the trunk and make sure the cargo divider is secure and no objects are on the divider. See Trunk , Lowering the Retractable Hardtop , and Raising the Retractable Hardtop for more information.

CHECK GAS CAP: This message displays if the fuel cap has not been fully tightened. Recheck the fuel 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 displays if one or more of the vehicle's doors are not closed properly. Make sure that the door(s) are closed completely.

ENGINE DISABLED: This message displays if the starting of the engine is disabled. Have your vehicle serviced by your dealer/retailer immediately.

ENG (Engine) PWR (Power) REDUCED: This message displays 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 dealer/retailer for service as soon as possible.

ICE POSSIBLE: This message displays when the outside air temperature is cold enough to create icy road conditions. Adjust your driving accordingly.

KEY FOB BATT (Battery) LOW: This message displays if the Remote Keyless Entry (RKE) transmitter battery is low. Replace the battery in the transmitter. See "Battery Replacement" under Remote Keyless Entry (RKE) System Operation .

LOW FUEL: This message displays along with a low fuel warning light on the instrument panel cluster when your vehicle is low on fuel. Refill the fuel tank as soon as possible. See Low Fuel Warning Light , Fuel , and Filling the Tank .

LOW OIL LEVEL: This message may display on some vehicles. For correct operation of the low oil sensing system, your vehicle should be on a level surface. A false LOW OIL LEVEL message may appear if the vehicle is parked on a grade. The oil level sensing system does not check for actual oil level if the engine has been off for a short period of time. The oil level is never checked while the engine is running. If the LOW OIL LEVEL message appears, and your vehicle has been parked on level ground with the engine off for at least 30 minutes, the oil level should be checked by looking at the oil dipstick. Prior to checking the oil level, be sure the engine has been off for a few minutes and your vehicle is on a level surface. Then check the dipstick and add oil if necessary. See Engine Oil .

LOW WASHER FLUID: This message displays when the vehicle's windshield washer fluid is low. Fill the windshield washer fluid reservoir to the proper level as soon as possible. See Windshield Washer Fluid .

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

POWER STEERING: This message displays if a problem has been detected with the electric power steering, if your vehicle has this feature. Have your vehicle serviced by your dealer/retailer immediately.

SERVICE AIR BAG: This message displays if there is a problem with the airbag system. Have your vehicle serviced by your dealer/retailer immediately.

TOP INOP (Inoperative) - TRUNK: If your vehicle has a retractable hardtop, this message displays if the trunk lid is not completely closed when operating the retractable hardtop. Make sure that the trunk lid is closed when operating the retractable hardtop. See Trunk , Lowering the Retractable Hardtop , and Raising the Retractable Hardtop for more information.

TOP MOVE COMPLT (Complete): If your vehicle has a retractable hardtop, this message displays when the retractable hardtop has lowered or raised completely. See Lowering the Retractable Hardtop and Raising the Retractable Hardtop for more information.

TOP NOT ALLOWED: If your vehicle has a retractable hardtop, this message displays if the retractable hardtop button is pressed while the vehicle is not in PARK (P). Make sure that the vehicle is in PARK (P) when operating the retractable hardtop. See Lowering the Retractable Hardtop and Raising the Retractable Hardtop for more information.

TOP NOT SECURE: If your vehicle has a retractable hardtop, this message displays when the retractable hardtop button is released before the top open or close operation is complete. Press and hold the retractable hardtop button to fully open or close the top. See Lowering the Retractable Hardtop and Raising the Retractable Hardtop for more information.

TOP OVER TEMP (Temperature): If your vehicle has a retractable hardtop, this message displays when the retractable hardtop button is pressed and the hardtop pump motor temperature is too hot. Wait for the hardtop pump motor to cool down before using the retractable hardtop. See Lowering the Retractable Hardtop and Raising the Retractable Hardtop for more information.

TOP TOO COLD: If your vehicle has a retractable hardtop, this message displays when the retractable hardtop button is pressed and the hardtop pump motor temperature is too cold. Wait for the hardtop pump motor to warm up before using the retractable hardtop. See Lowering the Retractable Hardtop and Raising the Retractable Hardtop for more information.

TRUNK AJAR: This message displays when the trunk is not closed completely. Make sure that the trunk is closed completely. See Trunk for more information.