Highbeam On Light; Service Four-Wheel Drive Warning Light - GMC Envoy Owner's Manual

Highbeam On Light

See Headlamp High/Low-Beam Changer on page 3-8.
3-48
This light will come on
when the high-beam
headlamps are in use.
Service Four-Wheel Drive
Warning Light
The service four-wheel drive light comes on to indicate
that there may be a problem with the drive system
and service is required. Malfunctions can be indicated
by the system before any problem is apparent,
which may prevent serious damage to the vehicle. This
system is also designed to assist your GM dealer in
correctly diagnosing a malfunction.
This light should come on
briefly when you turn on
the ignition, as a check to
show you it is working.