Displays Test
Certain instrument panel cluster (IPC) features are tested when the ignition
is turned on in order to verify the features are working properly. The following occurs
at key up:
• | The air bag indicator flashes 7 times. |
• | The Antilock Brake System (ABS) indicator illuminates briefly. |
• | The service engine soon indicator (MIL) illuminates briefly. |
• | The charge indicator illuminates briefly. |
• | The seat belt indicator illuminates for 70 seconds or until the
driver seat belt is latched. |
• | The brake indicator illuminates briefly. |
• | The coolant temperature indicator |
• | The cruise engaged indicator |
• | The oil pressure indicator |
• | The traction control indicator |
• | All odometer segments illuminate briefly. |
Indicators and Warning Messages
Refer to
Indicator/Warning Message Description and Operation
.
Engine Coolant Temperature Gage
The instrument panel cluster (IPC) displays the engine coolant temperature as
determined by the powertrain control module (PCM). The IPC receives a class 2
message from the PCM indicating the engine coolant temperature.
Fuel Gage
The instrument panel cluster (IPC) displays the fuel level as determined by
the powertrain control module (PCM). The IPC receives a class 2 message from
the PCM indicating the fuel level percent.
Odometers
Each instrument panel cluster (IPC) is equipped with a season odometer and 2
trip odometers. The IPC uses the odometer rolling count message from the powertrain
control module (PCM). The rolling count value is determined by counting the speed
pulses from the vehicle speed signal (VSS). The IPC uses the rolling count data from
the PCM and a software program to determine vehicle mileage. The odometers can be
displayed in miles or kilometers. The units displayed is switched between English
and metric by pressing the menu button on the driver information center (DIC) until
the units mode is displayed. Pressing the set/reset button will select between English
or Metric. . When the set/reset button is pressed to show the odometer in metric,
km and the number will be displayed. When the odometer is in English, MI and the number
will be displayed.
Season Odometer
The season odometer displays the total accumulated miles or kilometers of the
vehicle. This value is permanently stored in the IPC. If an odometer malfunction occurs
or if the IPC must be replaced, an authorized Delco service center must be contacted
to program proper vehicle specifics, including mileage, for the IPC. The season odometer
is capable of displaying 999,999 kilometers or 999,999 miles depending
on units selected. Leading zeros are not displayed. The display will not roll-over
to 000,000 if the maximum displayed miles or kilometers are reached. If the display
limit is exceeded, the maximum value (999,999) is displayed. If the mileage is above
621,503 miles and metric units are selected the odometer shall display 999,999 km.
Trip Odometer
The trip odometer displays the accumulated miles or kilometers to the tenths
of a mile or kilometer since the last reset. This value is stored in the IPC. The
IPC has 2 trip odometers which can be selected by pressing the information
button. Pressing this button allows you to scroll through trip mode A or trip mode
B. Pressing this button again will allow you to cycle through time elapsed, average
speed, range, fuel economy, battery, and oil life. Pressing this button again will
put you in the season (total miles) mode assuming you started from the season mode.
The displayed trip odometer is reset on the IPC by pressing and holding the set/reset
button for 3 seconds. You have to be in the specific trip mode (A or B) in
order to reset that specific trip odometer. Both trip odometers accumulate miles or
kilometers even when they are not displayed. If the set/reset button is pressed and
held for 3 seconds while in a trip mode (A or B), the display will reset to
zero.
Oil Life Left
Oil life left percent is based on the information it receives from a class 2
message from the powertrain control module (PCM). The instrument panel cluster (IPC)
displays the current percent of the GM Oil Life System in the trip odometer display.
When the oil needs changing the change oil indicator in the message center turns on.
When the engine oil is changed the oil life left percent needs to be reset. Press
and hold the set/reset button for 3 seconds until 100 percent is displayed
in the trip odometer.
PRNDL Display
The instrument panel cluster (IPC) is equipped with a Park, Reverse, Neutral,
Drive, Low (PRNDL) display. The IPC PRNDL receives a class 2 message from the
powertrain control module (PCM) indicating the PRNDL position.
Speedometer
The instrument panel cluster (IPC) displays vehicle speed as determined by the
powertrain control module (PCM). The IPC receives a class 2 message from the PCM.
The IPC uses the vehicle speed sensor (VSS) data received from the PCM and a software
program to determine the proper vehicle speed to display.
Tachometer
The instrument panel cluster (IPC) displays the engine speed as determined by
the powertrain control module (PCM). The IPC receives a class 2 message from
the PCM indicating the engine speed.