Chevrolet Optra 2004 Owner's Manual page 116

Windshield Wiper Lever
Windshield Wipers
Use this lever located on the right side of the steering
wheel to operate the windshield wipers. The ignition
must be turned to ON to operate the windshield wipers.
HI (High Speed): Move the lever to this position for
wiping at high speed.
LO (Low Speed): Move the lever to this position for
steady wiping at low speed.
3-8
INT (Intermittent): Move the lever to this position to
choose a delayed wiping cycle. Turn the band on the
windshield wiper lever toward FAST or SLOW for a
shorter or longer delay between wipes. The wiper speed
can only be adjusted when the lever is in the INT position.
OFF: Move the lever to this position to turn off the
windshield wipers.
Misting Function
Move the lever toward, but not completely in, the INT
position for a single wiping cycle. Hold it there until the
windshield wipers start; then let go. The windshield
wipers will stop after one wipe. If you want more wipes,
hold the band toward INT longer.
Remember that damaged wiper blades may prevent you
from seeing well enough to drive safely. To avoid
damage, be sure to clear ice and snow from the wiper
blades before using them.
If they are frozen to the windshield, carefully loosen or
thaw them. If your blades do become damaged, get
new blades or blade inserts.
Heavy snow or ice can overload your wiper motor. A
circuit breaker will stop the motor until it cools.
Clear away snow or ice to prevent an overload.