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 clears when the vehicle's condition is no longer present. To acknowledge a message and clear it from the display, press and hold any of the DIC buttons. If the condition is still present, the warning message comes 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 cover is not in place when operating the retractable hardtop. Open the trunk and make sure the cargo cover is secure and no objects are in contact with the cover. 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.

CHECK TIRE PRESS (Pressure)

This message displays when the pressure in one or more of the vehicle's tires needs to be checked. If a tire pressure message appears on the DIC, stop as soon as you can. Have the tire pressures checked and set to those shown on the Tire Loading Information label. See Tires , Loading the Vehicle , and Inflation - Tire Pressure. The DIC also shows the tire pressure values. See DIC Operation and Displays. If the tire pressure is low, the low tire pressure warning light comes on. See Tire Pressure Light.

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.

LEARN COMPLETE

On vehicles without the Remote Keyless Entry (RKE) system, this message displays when the Tire Pressure Monitor System (TPMS) has completed the tire learning process. See Tire Pressure Monitor System for more information.

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 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 immediately by your dealer/retailer.

SERVICE AIR BAG

This message displays when there is a problem with the airbag system. Have your vehicle serviced by your dealer/retailer immediately.

SVC (Service) TIRE MONITOR

This message displays if a part on the Tire Pressure Monitor System (TPMS) is not working properly. The tire pressure light also flashes and then remains on during the same ignition cycle. See Tire Pressure Light. Several conditions may cause this message to appear. See Tire Pressure Monitor Operation for more information. If the warning comes on and stays on, there may be a problem with the TPMS. See your dealer/retailer.

TIRE LEARN ON

On vehicles without the Remote Keyless Entry (RKE) system, this message displays when the Tire Pressure Monitor System (TPMS) is re-learning the tire positions on your vehicle. The tire positions must be re-learned after rotating the tires or after replacing a tire or sensor. See Tire Inspection and Rotation , Tire Pressure Monitor System , and Inflation - Tire Pressure for more information.

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 Hardtopfor 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 P (Park). Make sure that the vehicle is in P (Park) 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.