Center High-Mounted Stoplamp; (Chmsl); License Plate Lamp; Electrical System - GMC Chevrolet Express 2022 Owner's Manual

Center High-Mounted Stoplamp

(CHMSL)

The Center High-Mounted Stoplamp (CHMSL)
is above the rear doors at the center of the
vehicle.
To replace a bulb:
1. Remove the two screws from the CHMSL
assembly.
2. Remove the CHMSL assembly.
3. Turn the bulb socket counterclockwise
one-quarter turn to remove it from the
lamp assembly.
4. Pull the old bulb straight out of the
socket and push the new bulb into the
socket.
5. Turn the bulb socket clockwise
one-quarter turn to install it in the lamp
assembly.
6. Reinstall the CHMSL assembly and two
screws.
Do not block or damage the CHMSL when
items are loaded on the roof of the vehicle.

License Plate Lamp

1. Bulb Socket
2. License Plate Bulb Assembly
3. Screws
To replace one of these bulbs:
1. Remove the screws (3) that secure the
license plate bulb assembly (2).
Vehicle Care
2. Turn the bulb socket (1) counterclockwise
and pull the bulb straight out of the
socket.
3. Install the new bulb.
4. Reverse Steps 1 and 2 to reinstall the
license plate bulb assembly.

Electrical System

Electrical System Overload

The vehicle has fuses to protect against an
electrical system overload.
When the current electrical load 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.
Fuses protect the wires that provide the
power to the devices in your vehicle.
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.
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