2003 Chevrolet Tahoe Owner's Manual - Page 216

SERVICE 4WD If a problem occurs with the four wheel drive system this message will appear on the DIC. If this message appears, stop as soon as possible and turn off the vehicle. Restart the vehicle and check for the message on the DIC display. If the message is still displayed, or appears again when you begin driving, the four wheel drive system needs service. REAR ACCESS OPEN If the liftgate is open while the ignition is in RUN, this message will appear on the DIC display and you will hear a chime. Turn the vehicle off and check the liftgate. Restart the vehicle and check for the message on the DIC display. Pressing the select button will acknowledge this message and clear it from the DIC display. SERVICE RIDE CONTROL If a problem occurs with the suspension system, this message will appear on the DIC. If this message appears turn off the vehicle. Restart the vehicle and check for the message on the DIC display. If the message is still displayed, or appears again when you begin driving, the ride control needs service. REDUCED BRAKE POWER If your vehicle has vacuum assist power brakes, this message will be displayed and you may notice that the brake pedal is harder to push and it will take longer to stop. You may also hear a motor running and feel a slight vibration in the brake pedal or steering wheel when you apply or release the brake pedal even if your foot is not on the brake pedal. This indicates that the Supplemental Brake Assist system is working to maintain braking power. If you are braking lightly, you may not notice any difference in the operation of your brakes. TURN SIGNAL ON If a turn signal is left on for 3/4 of a mile (1.2 km), this message will appear on the display and you will hear a chime. Move the turn signaVmultifunction lever to the off position. Pressing the select button will acknowledge this message and clear it from the DIC display. 3-65