Electrical System; Electrical System Overload; Fuses And Circuit Breakers - GMC Terrain 2018 Owner's Manual

2. Bulb
3. Lamp Assembly
To replace one of these bulbs:
1. Open the liftgate partway. See
Liftgate 0 41.
2. Push the lamp assembly
outboard to remove.
3. Pull the lamp assembly down
to remove it from the liftgate.
4. Turn the bulb socket (1)
counterclockwise to remove it
from the lamp assembly (3).
5. Pull the bulb (2) straight out of
the bulb socket (1).
6. Push the replacement bulb
straight into the bulb socket
and turn the bulb socket
clockwise to install it into the
lamp assembly.
7. Push the lamp assembly into
the liftgate engaging the clip
side first.
8. Push on the lamp side opposite
the clip until the lamp assembly
snaps into place.

Electrical System

Electrical System
Overload
The vehicle has fuses and circuit
breakers to protect against an

electrical system overload.

When the electrical load current is
too heavy, the circuit breaker opens
and closes, protecting the circuit
until the current load returns to
normal or the problem is fixed. This
greatly reduces the chance of circuit
overload and fire caused by
electrical problems.
Replace a bad fuse with a new one
of the identical size and rating.
If there is a problem on the road and
a fuse needs to be replaced, the
same amperage fuse can be
borrowed. Choose some feature of
the vehicle that is not needed to use
and replace it as soon as possible.
Headlamp Wiring
An electrical overload may cause
the lamps to go on and off, or in
some cases to remain off. Have the
Vehicle Care
headlamp wiring checked right away
if the lamps go on and off or
remain off.
Windshield Wipers
If the wiper motor overheats due to
heavy snow or ice, the windshield
wipers will stop until the motor cools
and will then restart.
Although the circuit is protected
from electrical overload, overload
due to heavy snow or ice may
cause wiper linkage damage.
Always clear ice and heavy snow
from the windshield before using the
windshield wipers.
If the overload is caused by an
electrical problem and not snow or
ice, be sure to get it fixed.
Fuses and Circuit
Breakers
The wiring circuits in the vehicle are
protected from short circuits by a
combination of fuses and circuit
breakers. This greatly reduces the
chance of damage caused by
electrical problems.
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