Buick PARKAVENUE 1994 Manual page 131

service, and you should take your Buick to the dealer at
once. To save your battery until you get there, turn off
all accessories and set your air system to OFF.
Voltage Indicator
Tachometer
If you have the optional gage cluster, this gage shows
voltage in the electrical system. The normal range is 11
to 15 volts. If the reading stays outside the normal
range, have your Buick dealer check the electrical
system.
The tachometer tells you how fast the engine is running.
It displays engine speed in thousands of revolutions per
minute (RPM).
I
NOTICE:
Do not operate the engine with the tachometer in
the red area, or engine damage may occur.
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