Chevrolet 1999 Express Van Specifications download pdf (Page 132)

Entry/Exit Lighting

The vehicle has an illuminated entry/exit feature.

The dome lamps come on if the dome override button is

in the out position, when a door is opened or the key

is removed from the ignition.

Reading Lamps

For vehicles with reading lamps, press the button

located next to each lamp to turn it on or off.

The vehicle may also have reading lamps in other

locations. The lamps cannot be adjusted.

Electric Power Management

The vehicle has Electric Power Management (EPM)

that estimates the battery’s temperature and state

of charge. It then adjusts the voltage for best

performance and extended life of the battery.

When the battery’s state of charge is low, the voltage is

raised slightly to quickly bring the charge back up. When

the state of charge is high, the voltage is lowered slightly

to prevent overcharging. If the vehicle has a voltmeter

gage or a voltage display on the Driver Information

Center (DIC), you may see the voltage move up or down.

This is normal. If there is a problem, an alert will be

displayed.

The battery can be discharged at idle if the electrical

loads are very high. This is true for all vehicles.

This is because the generator (alternator) may not

be spinning fast enough at idle to produce all the

power that is needed for very high electrical loads.

A high electrical load occurs when several of the

following are on, such as: headlamps, high beams, fog

lamps, rear window defogger, climate control fan at

high speed, heated seats, engine cooling fans, trailer

loads, and loads plugged into accessory power outlets.

EPM works to prevent excessive discharge of the

battery. It does this by balancing the generator’s output

and the vehicle’s electrical needs. It can increase

engine idle speed to generate more power, whenever

needed. It can temporarily reduce the power demands

of some accessories.

Normally, these actions occur in steps or levels, without

being noticeable. In rare cases at the highest levels of

corrective action, this action may be noticeable to the

driver. If so, a Driver Information Center (DIC) message

might be displayed, such as BATTERY SAVER ACTIVE,

BATTERY VOLTAGE LOW, or LOW BATTERY. If this

message is displayed, it is recommended that the driver

reduce the electrical loads as much as possible. See DIC

Warnings and Messages on page 3-48.

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Chevrolet 1999 Express Van Specifications Page 132

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