GM Service Manual Online
For 1990-2009 cars only

DIC Warnings and Messages Pickup Models Only

The Driver Information Center (DIC) is located on the instrument panel above the steering wheel. The DIC comes on when the ignition is on.

If a problem is detected, a warning message will appear on the display. Pressing the select button or the set/reset button on the DIC buttons, or the trip odometer reset stem for vehicles without DIC steering wheel buttons, will acknowledge some current warning or service messages.

Some messages that your DURAMAX® diesel may show are:

CHANGE FUEL FILTER

This message will appear on the DIC for ten seconds when a fuel filter change is required. See Fuel Filter Replacement for more information.

CLEAN EXHAUST FILTER SEE OWNERS MANUAL NOW

This message will appear on the DIC when an exhaust particulate filter cleaning is required. This message and a chime will sound when vehicle performance is limited. See Diesel Particulate Filter for more information.

COOLANT LEVEL LOW ADD COOLANT

Notice: Engine damage from running your engine without coolant is not covered by your warranty. See "Overheated Engine Protection Operating Mode" in the Index of your owner's manual for information on driving to a safe place in an emergency.

If your vehicle has a low coolant level sensor, this message will appear on the DIC if the engine coolant level is low. Adding coolant to the coolant recovery tank will clear the message. See Cooling System in the owner's manual Index .

ELEVATED IDLE OFF

This message will appear when the elevated idle/exhaust restrictor feature has been turned off. This feature can be turned on or off by pressing the pedals. For more information on the elevated idle/exhaust restrictor feature, see Starting the Diesel Engine .

ELEVATED IDLE ON

This message will appear when the elevated idle/exhaust restrictor feature has been turned on. This feature can be turned on or off by pressing the pedals. For more information on the elevated idle/exhaust restrictor feature, see Starting the Diesel Engine .

###% FUEL FILTER LIFE REMAINING

To access this display, the vehicle must be in PARK (P). If your vehicle has DIC buttons, press the vehicle information button until FUEL FILTER LIFE REMAINING displays. If your vehicle does not have DIC buttons, press the trip stem until FUEL FILTER LIFE REMAINING displays. This display shows an estimate of the fuel filter's remaining useful life. If you see 90% FUEL FILTER LIFE REMAINING on the display, it means 90% of the current fuel filter life remains. The fuel filter life system will alert you to change your fuel filter on a schedule consistent with your driving conditions.

When the remaining fuel filter life is low, the CHANGE FUEL FILTER message will appear on the display. You should change your fuel filter as soon as you can.

FUEL FILTER LIFE RESET

You must reset the FUEL FILTER LIFE REMAINING display after each fuel filter change. It will not reset itself. Also, be careful not to reset the FUEL FILTER LIFE REMAINING display at any time other than when the fuel filter has just been changed because it cannot be reset accurately until the next fuel filter change. The fuel filter life will change to 100% when the system has been reset. To reset the system, press and hold the set/reset button, or the trip stem if there are no DIC buttons, for two seconds while ###% FUEL FILTER LIFE REMAINING is displayed on the DIC. For more information on DIC Vehicle Customization, see "Driver Information Center (DIC)" in your owner manual.

ENGINE POWER IS REDUCED

A computer monitors the operation of the electric accelerator. If the ENGINE POWER IS REDUCED message comes on while you are driving, the computer is indicating that your vehicle has a problem. You should take your vehicle in for service very soon.

SHIFT INHIBITED SELECT N TO RESET

If the transmission is unable to shift into a selected gear, this message will appear on the DIC. The electronic shift position indicator on the instrument panel cluster may blink when this occurs. To make the vehicle shift to the requested gear, you may have to shift back to PARK (P) or NEUTRAL (N) and re-select the desired gear.

WATER IN FUEL SERVICE REQUIRED

This message will come on to warn you if there is water in the diesel fuel system. For more information on how this message works, see Diesel Fuel Requirements and Fuel System .