Engine Oil Additives/Engine Oil Flushes
Do not add anything to the oil. The recommended oils with the dexos specification and displaying the dexos certification mark are all that is needed for good performance and engine protection.
Engine oil system flushes are not recommended and could cause engine damage not covered by the vehicle warranty.
See also:
Manual Operation
The air delivery mode or fan speed can be manually adjusted.
(Fan Control): Press to increase or decrease the fan speed.
Pressing or
while in automatic control places the fan speed under manual ...
Manual Rearview Mirror
Hold the inside rearview mirror in the center and move it for a clearer view
behind the vehicle. Adjust the mirror to avoid glare from the headlamps behind you.
Push the tab forward for daytime us ...
Retrieve My Number
1. Push X. System responds: “OnStar ready.”
2. Say “My Number.” System responds: “Your OnStar Hands-Free Calling number is.” ...