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Cadillac Escalade Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12460268) - 2019 - CRC - 4/18/18
DRIVING AND OPERATING 273
the vehicle. This message will
automatically turn off in about
10 seconds. This message can be
acknowledged before it automatically
turns off.
CHECK TRAILER WIRING: This
message will display if:
.
The ITBC system first determines
connection to a trailer with
electric brakes and then the trailer
harness becomes disconnected the
vehicle.
If the disconnect occurs while the
vehicle is stationary, this message
will automatically turn off in
about 30 seconds. This message
will also turn off if it is
acknowledged or if the trailer
harness is reconnected.
If the disconnect occurs while the
vehicle is moving, this message
will continue until the ignition is
turned off. This message will also
turn off if it is acknowledged or if
the trailer harness is reconnected.
.
There is an electrical fault in the
wiring to the trailer brakes. This
message will continue as long as
there is an electrical fault in the
trailer wiring. This message will
also turn off if it is acknowledged.
To determine whether the electrical
fault is on the vehicle side or trailer
side of the trailer wiring harness
connection:
1. Disconnect the trailer wiring
harness from the vehicle.
2. Turn the ignition off.
3. Wait 10 seconds, then turn the
ignition back to RUN.
4. If the CHECK TRAILER WIRING
message reappears, the electrical
fault is on the vehicle side.
If the CHECK TRAILER WIRING
message only reappears when
connecting the trailer wiring
harness to the vehicle, the
electrical fault is on the
trailer side.
SERVICE TRAILER BRAKE SYSTEM:
This message will display when there
is a problem with the ITBC system.
If this message continues over
multiple ignition cycles, there is a
problem with the ITBC system. Have
the vehicle serviced.
If either the CHECK TRAILER WIRING
or SERVICE TRAILER BRAKE SYSTEM
message displays while driving, the
ITBC system may not be fully
functional or may not function at all.
When traffic conditions allow,
carefully pull the vehicle over to the
side of the road and turn the ignition
off. Check the wiring connection to
the trailer and turn the ignition back
on. If either of these messages
continues, either the vehicle or trailer
needs ser vice.
A GM dealer may be able to diagnose
and repair problems with the trailer.
However, any diagnosis and repair of
the trailer is not covered under the
vehicle warranty. Contact your trailer
dealer for assistance with trailer
repairs and trailer warranty
information.
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