OnStar Services
See also:
Brake System Warning Light
The vehicle brake system consists
of two hydraulic circuits. If one
circuit is not working, the remaining
circuit can still work to stop the
vehicle. For normal braking
performance, both cir ...
Setting the Tone(Bass/Midrange/Treble)
AUDIO: Push and release the AUDIO knob until
BASS, MID (midrange) (without Bose®), or TREB
(treble) displays. Turn the knob to increase or to
decrease the tone. The display shows the bass,
midran ...
What Kind of Engine Oil to Use
Look for two things:
• GM6094M
Your vehicle’s engine requires oil meeting
GM Standard GM6094M. You should look
for and use only an oil that meets GM
Standard GM6094M.
• SAE 5W-30
As s ...
