Trailer Sway Control (Tsc) - Chevrolet Silverado 1500 2023 Owner's Manual

316 Driving and Operating
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.
The disconnect occurs while the vehicle is
moving, this message will continue until
the vehicle 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 vehicle off.
3. Wait 10 seconds, then turn the vehicle
back to RUN.
4. If the CHECK TRAILER WIRING message
reappears, the electrical fault is on the
vehicle side.
5. 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 BRAKES or REDUCED
TRAILER BRAKING: This message will display
if the electric trailer brake performance is
either reduced or non-functional.
HOLD LAST KNOWN GAIN: This message will
display if it is no longer possible to adjust
the trailer brake gain. Trailer brakes may or
may not still be functional, and it is not
possible to adjust brake gain based on road
conditions. The trailer brakes may remain
functional until the next time the vehicle is
turned off.
TRAILER BRAKES DISABLED SERVICE
REQUIRED: This message will display when
there is a problem with the ITBC system.
If this message continues over multiple
restarts, have the vehicle serviced.
If either the CHECK TRAILER WIRING, TRAILER
BRAKES DISABLED SERVICE REQUIRED,
SERVICE TRAILER BRAKES, HOLD LAST KNOWN
GAIN, or REDUCED TRAILER BRAKING
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 vehicle off.
Check the wiring connection to the trailer
and turn the vehicle back on. If either of
these messages continue, either the vehicle
or trailer needs service.
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.

Trailer Sway Control (TSC)

Vehicles with StabiliTrak/Electronic Stability
Control (ESC) have a Trailer Sway Control
(TSC) feature. Trailer sway is unintended
side-to-side motion of a trailer while towing.
If the vehicle is towing a trailer and the TSC
detects that sway is increasing, the vehicle
brakes are selectively applied at each wheel,
to help reduce excessive trailer sway.
If equipped with the Integrated Trailer Brake
Control (ITBC) system, and the trailer has an
electric brake system, StabiliTrak/ESC may
also apply the trailer brakes.