Chevrolet Silverado: Warning Lights, Gauges, and Indicators / Traction Control System (TCS)/Electronic Stability Control Light

If equipped, the Electronic Stability Control (ESC) or TCS indicator/warning
light comes on briefly when the engine is started.
If the light does not come on, have the vehicle serviced by your dealer. If the
system is working normally, the indicator light turns off.
If the light is on and not flashing, the TCS, and potentially the ESC system
have been disabled.
If the indicator/warning light is on and flashing, the TCS and/or the ESC system
is actively working.
See Traction Control/Electronic Stability Control.
Trailer Sway Control Light (Uplevel Cluster)

This light will flash when Trailer Sway Control is active. See Trailer Sway Control
(TSC).
This light comes on briefly while starting the engine. If it does not, have the
vehicle serviced by your dealer. If the system is working normally, the indicator
light then turns off...
This light comes on briefly while starting the engine. If it does not, have the
vehicle serviced by your dealer.
This light comes on when the ESC system is turned off...
Other information:
Transfer Case
When to Check Lubricant
Refer to Maintenance Schedule to determine when to check the lubricant.
Fill Plug
Drain Plug
To get an accurate reading, the vehicle should be on a level surface.
If the level is below the bottom of the fill plug (1) hole, located on the transfer
case, some lubricant will need to be added...
The vehicle has a number of computers that record information about the vehicle’s
performance and how it is driven or used. For example, the vehicle uses computer
modules to monitor and control engine and transmission performance, to monitor the
conditions for airbag deployment and deploy them in a crash, and, if equipped, to
provide antilock braking to help the driver control the vehicle...