GMC 2005 Canyon Owner's Manual page 166

The following are the available modes:
RFA 1 (default): This mode flashes the parking lamps
when you press the lock or unlock buttons on the
remote keyless entry transmitter.
RFA 2: This mode flashes the parking lamps and
sounds the horn when you press the lock button on the
remote keyless entry transmitter. This mode also
flashes the parking lamps when you press the unlock
button on the remote keyless entry transmitter.
RFA 3: This mode flashes the parking lamps and
sounds the horn when you press the lock or unlock
buttons on the remote keyless entry transmitter.
RFA 4: This mode disables remote keyless entry
feedback. There will be no feedback when you press
the lock or unlock buttons on the remote keyless
entry transmitter.
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Language
This feature allows you to choose the language in which
the DIC display will show information.
To set your choice for this feature, perform the
following steps:
1. With the engine off, turn the key to ON.
2. Press and release the reset stem until the language
is shown on the DIC display.
3. To view the next available language, press and
hold the reset stem for approximately two seconds.
Release the reset stem and press and hold
again to view each language. You can choose from
English (default), Spanish (United States only) or
French (Canada only).
4. Once the desired language is shown on the
DIC display, briefly press the reset stem to set
your choice.