DVD Error Messages
Player Error: This message displays when there are disc load or eject problems.
Disc Format Error: This message displays if the disc is inserted with the disc label wrong side up, or if the disc is damaged.
Disc Region Error: This message displays if the disc is not from a correct region.
No Disc Inserted: This message displays if no disc is present when 
DVD or DVD/CD/AUX is pressed on the radio.
See also:
Brake Adjustment
Every time the brakes are applied, with or without the vehicle moving, the brakes
adjust for wear. ...
When to Check Power Steering Fluid
It is not necessary to regularly check power steering fluid unless there is a leak suspected in the system or an unusual noise is heard. A fluid loss in this system could indicate a problem. Have the ...
Safety
The National Highway Traffic Safety Administration gave the 2007 Yukon a
five-star frontal crash-test rating; it hasn't done a side-impact test as of
this writing. Rollover ratings were listed at ...