ABS: Refer to ABS Description and Operation

Air Bag: Refer to SIR System Description and Operation

(Canada)

BRAKE (U.S.)

Brake: Refer to Brake Warning System Description and Operation

Charge: Refer to Charging System Description and Operation

(Canada)

CRUISE (U.S.)

CRUISE: Refer to Cruise Control Description and Operation

Fasten Safety Belt: Refer to Seat Belt System Description and Operation

Four Wheel Drive: Refer to

High Beam: Refer to Exterior Lighting Systems Description and Operation

PARK BRAKE

Park Brake: Refer to Park Brake System Description and Operation

(Canada)

SECURITY (U.S.)

SECURITY: Refer to Theft Systems Description and Operation

(Canada)

SERVICE ENGINE SOON (U.S.)

Malfunction Indicator Lamp (MIL): Refer to

Traction Off: Refer to ABS Description and Operation

Turn Signals: Refer to Exterior Lighting Systems Description and Operation

Upshift Indicator: The instrument panel cluster (IPC) illuminates the shift indicator when the powertrain control module (PCM) determines that the vehicle should be shifted to the next higher gear.

Wait to Start: Refer to Engine Control Module Description for the 6.6L engine

BATTERY NOT CHARGING

Refer to Charging System Description and Operation

CARGO DOOR AJAR

Refer to Door Ajar Indicator Description and Operation

CHANGE ENGINE OIL

The instrument panel cluster (IPC) illuminates the CHANGE ENGINE OIL message when the engine control module (ECM) determines that the engine oil should be changed. Refer to GM Oil Life System Resetting .

CHANGE FUEL FILTER

The instrument panel cluster (IPC) illuminates the CHANGE FUEL FILTER messages in the driver information center (DIC) when the powertrain control module (PCM) determines that the fuel filter should be changed.

CHECK OIL LEVEL

The instrument panel cluster (IPC) illuminates the CHECK OIL LEVEL message in the driver information center (DIC) when the powertrain control module (PCM) detects a low engine oil level condition.

CHECK WASHER FLUID

Refer to Wiper/Washer System Description and Operation

CNG LEVEL SHOWN

The instrument panel cluster (IPC) illuminates the CNG LEVEL SHOWN message in the driver information center (DIC) when the powertrain control module (PCM) detects that the fuel gage selector switch is pressed while the vehicle is operating on gasoline.

DRIVER DOOR AJAR

Refer to Door Ajar Indicator Description and Operation

ELEVATED IDLE DISABLED

Refer to Engine Control Module Description for the 6.6L (LLY) engine

ELEVATED IDLE ENABLED

Refer to Engine Control Module Description for the 6.6L (LLY) engine

ENGINE AUTOSTART MODE

Refer to Starter/Generator Description and Operation

ENGINE COOLANT HOT

Refer to Cooling System Description and Operation

ENGINE OVERHEATED

Refer to Cooling System Description and Operation

FUEL FILTER LIFE RESET

The instrument panel cluster (IPC) illuminates the FUEL FILTER LIFE RESET message when the fuel filter reset procedure is completed.

FUEL LEVEL LOW

The instrument panel cluster (IPC) illuminates the FUEL LEVEL LOW message in the driver information center (DIC) and the LOW FUEL indicator when the IPC detects that the fuel level is less than a pre-determined value.

GASOLINE LEVEL SHOWN

The instrument panel cluster (IPC) illuminates the GASOLINE LEVEL SHOWN message in the driver information center (DIC) when the powertrain control module (PCM) detects that the fuel gage selector switch is pressed while the vehicle is operating on CNG.

GRADE BREAKING ACTIVE

Refer to Transmission Indicators and Messages for the Allison transmission

HOOD AJAR

Refer to Door Ajar Indicator Description and Operation

ICE POSSIBLE

The instrument panel cluster (IPC) illuminates the ICE POSSIBLE message in the driver information center (DIC) when the outside air temperature drops below 2.5°C (36.5°F).

LEFT REAR DOOR AJAR

Refer to Door Ajar Indicator Description and Operation

LOW COOLANT LEVEL

Refer to Cooling System Description and Operation

LOW FUEL

Low Fuel: The instrument panel cluster (IPC) illuminates the FUEL LEVEL LOW message in the driver information center (DIC) and the LOW FUEL indicator when the IPC detects that the fuel level is less than a pre-determined value.

OIL LIFE RESET

The instrument panel cluster (IPC) illuminates the OIL LIFE RESET message when the powertrain control module (PCM) determines that the engine oil should be changed. Refer to GM Oil Life System Resetting .

OIL PRESSURE LOW

The instrument panel cluster (IPC) illuminates the OIL PRESSURE LOW message in the driver information center (DIC) when the powertrain control module (PCM) detects a low oil pressure condition.

OVERSPEED

The instrument panel cluster (IPC) illuminates the OVERSPEED indicator when the IPC detects that the vehicle speed is more than 120 km/h (75 mph).

PASSENGER DOOR AJAR

Refer to Door Ajar Indicator Description and Operation

PROGRAM CLUSTER

The instrument panel cluster (IPC) illuminates the PROGRAM CLUSTER message in the driver information center (DIC) when the IPC has not been programmed after an IPC replacement. Refer to Service Programming System (SPS) .

RANGE SHIFT INHIBITED

Refer to Transmission Indicators and Messages

for the Allison transmission

REDUCED ENGINE POWER

Refer to

REPLACE LIFTGATE FUSE

Refer to Door Ajar Indicator Description and Operation

RFA X BATTERY LOW

Refer to Keyless Entry System Description and Operation

RIGHT REAR DOOR AJAR

Refer to Door Ajar Indicator Description and Operation

RUNNING ON GASOLINE

The instrument panel cluster (IPC) illuminates the RUNNING ON GASOLINE message in the driver information center (DIC) when the vehicle is operating on gasoline.

SEATBELT REMINDER

Refer to Seat Belt System Description and Operation

SERVICE 42V BATTERIES

Refer to Starter/Generator Description and Operation

SERVICE 4WD

Refer to

SERVICE AIR BAG

Refer to SIR System Description and Operation

SERVICE BRAKE BOOSTER

Refer to Brake Warning System Description and Operation

SERVICE BRAKE SYSTEM

Refer to ABS Description and Operation

SERVICE BRAKE SYSTEM

Refer to Brake Warning System Description and Operation

SERVICE STABILITY

Refer to ABS Description and Operation

SERVICE STEER SYSTEM

Refer to Power Steering System Description and Operation

STABILITY SYSTEM ACTIVE

Refer to ABS Description and Operation

STABILITY SYSTEM DISABLED

Refer to ABS Description and Operation

STABILITY SYSTEM READY

Refer to ABS Description and Operation

TIGHTEN FUEL CAP

Refer to Evaporative Emission Control System Description for the 4.3L engine, Evaporative Emission Control System Description for the 4.8L, 5.3L, and 6.0L engine or Evaporative Emission Control System Description for the 8.1L engine

TRACTION ACTIVE

Refer to ABS Description and Operation

TRACTION SYSTEM LIMITED

Refer to ABS Description and Operation

TRANS IN WARM UP

TURN SIGNAL ON

Refer to Exterior Lighting Systems Description and Operation

VEHICLE SPEED LIMITED

The instrument panel cluster (IPC) illuminates the VEHICLE SPEED LIMITED message in the driver information center (DIC).

WAIT TO DRIVE

The instrument panel cluster (IPC) illuminates the WAIT TO DRIVE message in the driver information center (DIC) when the vehicle is not ready to drive after starting.

WATER IN FUEL

The instrument panel cluster (IPC) illuminates the WATER IN FUEL message in the driver information center (DIC) when the powertrain control module (PCM) detects a low signal from the water in fuel sensor.

42V SWITCH OFF

Refer to Starter/Generator Description and Operation

120V DISABLED

Refer to Power Outlets Description and Operation

120V GROUND FAULT

Refer to Power Outlets Description and Operation

120V READY

Refer to Power Outlets Description and Operation

120V OVERLOAD

Refer to Power Outlets Description and Operation

XX% FUEL FILTER LIFE

The instrument panel cluster (IPC) receives a class 2 message from the engine control module (ECM) indicating the remaining fuel filter life percent. Once the filter is changed, the fuel filter reset procedure must be performed in order to reset the fuel filter life monitor back to 100 percent.