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 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 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. See Automatic Headlamp System for more information.

AUTO (Automatic) LIGHTS ON

This message displays if the automatic headlamp system is enabled with the headlamp switch. See Automatic Headlamp System for more information.

BRAKE FLUID

This message displays to inform the driver that the brake fluid level is low while the ignition is on. 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 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 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 and Scheduled Maintenance 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.

COOLING MODE ON

This message may display on some vehicles. Under severe conditions, hot ambient temperatures, steep grades, and towing, your vehicle may experience more transaxle shifting. This is temporary and normal under these conditions. This does not require engine or transaxle service.

CRUISE ENGAGED

This message displays when the cruise control system is active. See Cruise Control for more information.

DOOR AJAR

This message displays if one or more of the vehicle's doors are not closed properly. When this message displays, 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 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 for service as soon as possible.

GATE AJAR

This message displays when the liftgate is not closed completely. Make sure that the liftgate is closed completely. See Liftgate for more information.

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 when your vehicle is low on fuel. Refill the fuel tank as soon as possible. See Fuel Gage , Fuel , and Filling the Tank for more information.

LOW TRACTION

If your vehicle has the Enhanced Traction System (ETS), this message displays when the system is actively limiting wheel spin. Slippery road conditions may exist if this message displays, so adjust your driving accordingly. See Enhanced Traction System (ETS) for more information.

PARKING BRAKE

This message displays if the parking brake is left engaged. See Parking Brake for more information.

POWER STEERING

This message displays if a problem has been detected with the electric power steering. Have your vehicle serviced by your dealer immediately.

SERVICE AIR BAG

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