CHEVROLET 2010 HHR - Manual (Page 201)

The RPD screen displays two divided areas (A, B) of
information called Regions. Advance through Region A
screens to show various gages and speedometer
displays. Advance through Region B screens to show
digital readouts and indicator information.
The position of these regions can be reversed. See the
SETUP MENU for more information.
When the ignition is turned off and then back on, the
RPD shows the last screen displayed.
Region A Gage and Speedometer
Displays
Change the information displayed in Region A by
turning the knob either clockwise or counterclockwise.
The available gages are:
BOOST: Displays positive boost pressure as
determined by the manifold air pressure (MAP) sensor.
AIR/FUEL RATIO: Displays the mass ratio of air to fuel.
CAM PHASER ANGLES: Displays orientation of the
intake and exhaust cam shafts relative to their park
positions as commanded by the engine control module.
OVERLAP represents the total distance the intake
and exhaust cam shafts have phased.
SPARK ADVANCE/ KNOCK RETARD: The spark
advance gage displays ignition timing. Knock retard
indicates the amount of ignition delay to reduce spark
knock.
ENGINE POWER & TORQUE: Displayed engine power
and torque are engine flywheel output values calculated
by the engine control module. These values are
approximate and may change with the air conditioning
load, generator output, air temperature, air pressure, and
fuel octane.
SPEEDOMETER & G FORCE: The G FORCE meter
displays lateral acceleration. While turning right, G forces
are felt on the left, and vice versa. PEAK values are
stored indefinitely, and can be reset with a press and hold
of the RPD knob while viewing the G FORCE meter.
SETUP MENU: Press the RPD knob to enter this menu.
The vehicle should be stopped while configuring the
setup menu selections.
SCREEN OFF: Turns the screen off.
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