Hummer H2. Manual - part 407

center (DIC) when the powertrain control module (PCM) detects a low engine oil level condition. The PCM 
only monitors the oil level switch signal circuit for a brief period between key on and ignition crank. The IPC 
receives a class 2 message from the PCM requesting illumination. 

CHANGE ENGINE OIL 

The instrument panel cluster (IPC) illuminates the CHANGE ENGINE OIL message when the powertrain 
control module (PCM) determines that the engine oil should be changed. The IPC receives a class 2 message 
from the PCM requesting illumination. Once the oil is changed, perform the engine oil monitor reset procedure 
in order to clear the Change Engine Oil indicator. Refer to GM Oil Life System - Resetting in Maintenance 
and Lubrication. 

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. The IPC receives a class 2 message from the powertrain control module (PCM) indicating fuel level 
percent. 

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). The IPC receives a class 2 message from 
the body control module (BCM) indicating the outside air temperature. 

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. The IPC receives a class 2 message from the 
PCM indicating the remaining oil life percent. Once the oil is changed, perform the engine oil monitor reset 
procedure in order to clear the Change Engine Oil indicator. Refer to GM Oil Life System - Resetting in 
Maintenance and Lubrication. 

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 with the signal 
circuit low. The IPC receives a class 2 message from the PCM requesting illumination. 

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). 

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 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Instrument Panel, Gauges, and Console - Hummer H2

  

System (SPS) in Programming. 

SERVICE TIRES SOON (Mideast export) 

The instrument panel cluster (IPC) illuminates the SERVICE TIRE SOON message when the vehicle 
communication interface module (VCIM) determines that the tires have to be changed. The IPC receives a class 
2 message from the VCIM. 

SERVICE VEHICLE SOON (Mideast export) 

The instrument panel cluster (IPC) illuminates the SERVICE VEHICLE SOON message when the vehicle 
communication interface module (VCIM) has to be replaced. The IPC receives a class 2 message from the 
VCIM. 

TIGHTEN FUEL CAP 

The instrument panel cluster (IPC) illuminates the TIGHTEN FUEL CAP message in the driver information 
center (DIC) when the powertrain control module (PCM) detects a low fuel pressure condition. The IPC 
receives a class 2 message from the PCM requesting illumination. 

TIRE SERVICE REQUIRED (Mideast export) 

The instrument panel cluster (IPC) illuminates the Tire Service Required message one month after the Service 
Tires Soon message is displayed. The powertrain control module (PCM) receives a class 2 message from the 
IPC limiting the vehicle speed to 64.4 km/h (40 mph). 

VEHICLE SPEED LIMITED 

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

DRIVER INFORMATION CENTER (DIC) DESCRIPTION AND OPERATION 

Driver Information Center (DIC) 

The driver information center (DIC) consists of a single line 22 character vacuum fluorescent (VF) display 
placed in the lower center area of the instrument panel cluster (IPC). The DIC will display vehicle information, 
configuration, and warning parameters to the driver. 

The display parameters are cycled, changed, and acknowledged using 4 DIC buttons. 

z

Trip Information 

Button representation icon appears as a road to the horizon. 

z

Fuel Information 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Instrument Panel, Gauges, and Console - Hummer H2

  

Button representation icon appears as a gasoline pump.

z

Personalization 

Button representation icon appears as a human next to vehicle. 

z

Select 

Button representation icon appears as an arrow. 

DIC Displays 

The DIC parameters are displayed by order of priority as follows (from highest to lowest) : 

z

Service Diagnostics  

z

Driver Identifier  

z

Feature Programming  

z

Driver Warnings  

z

Vehicle Information  

Vehicle Information 

Vehicle information provides feedback to the driver on vehicle performance, mileage, maintenance, or related 
information. 

Vehicle information can only be displayed with the ignition switch in the RUN position. 

When the English/Metric status changes, any applicable vehicle information data values will also change. 

DIC Trip Information / Reset Capabilities 

The available DIC Trip Information and reset capabilities are as follows: 

z

Odometer - Cannot be reset  

z

Personal Trip Odometer - Can be reset  

z

Business Trip Odometer - Can be reset  

z

Timer - Can be reset  

z

Hourmeter - Cannot be reset  

Trip Reset Stem 

The trip reset stem on the IPC operates in the following manner with the ignition switch in the RUN position: 

1. Each time the trip reset stem is pushed the display will cycle to the next trip parameter. The trip 

parameters are as follows: 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Instrument Panel, Gauges, and Console - Hummer H2

  

z

Odometer  

z

Personal Trip odometer  

z

Business Trip odometer  

z

Timer  

z

Hourmeter  

2. Holding the trip reset stem for greater than 1 second or depressing the SWC Select button while either 

Personal Trip or Business Trip odometer is displayed will reset the displayed trip odometer and all other 
corresponding trip parameters to 0.0 upon release of the stem. The trip odometer will remain displayed 
after being reset.  

3. If a trip information parameter is being displayed, pressing the DIC Trip Information button will display 

the next trip information parameter.  

4. If the next Trip Information parameter to be displayed is Timer, Hourmeter, or blank, pressing the reset 

stem will return the display to the Odometer.  

Odometer 

The odometer is capable of displaying values from 0 - 999,999 mi or km. 

If the ignition is in the OFF or UNLOCK/ACC position, the odometer can be displayed by pressing the trip 
reset stem. The odometer will remain displayed for 5 seconds. 

Trip Odometers 

The DIC can display Personal Trip or Business Trip odometers. 

The trip odometers are capable of displaying values from 0 - 999999.9 mi or km. 

When the maximum value is reached, the trip odometer will roll over to 0.0. 

Timer 

The Timer is displayed as XX (hours) : XX (minutes) : XX (seconds). 

The Timer is started and stopped using the DIC Select button. 

Holding the Select button for longer than 1 second while the Timer parameter is displayed will reset the Timer 
to 00:00:00. 

The Timer status and data value is retained in memory when the ignition is turned OFF. When the ignition is 
turned ON again, the Timer status and data value is resumed. 

The Timer maximum value is 99:59:59. When the maximum is reached, the Timer rolls over to 00:00:00 and 
continues to operate. 

Fuel Information 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Instrument Panel, Gauges, and Console - Hummer H2