Depending on the length of time the power was interrupted, your system may require GPS initialization.

If initialization is not necessary, the system proceeds directly to the Startup Confirmation screen.
If the system fails to locate a sufficient number of satellites to locate your position within 10 minutes, the following screen is displayed.

If you are experiencing GPS reception problems:
Tailgate Lock Cylinder Replacement
For Some Models
NOTE: Put on gloves to protect your hands.
Remove the tailgate lower trim panal.
Disconnect the tailgate cylinder rod (A).
NOTE: Check for damaged or stress-wh ...
Intermediate Shaft Removal (A/T)
Drain the transmission fluid. Reinstall the drain plug with a new sealing
washer.
Remove the right driveshaft.
Remove the shift cable cover (A).
Re ...
MAP Sensor Replacement
Disconnect the MAP sensor connector (A).
Remove the MAP sensor (B).
Install the parts in the reverse order of removal with a new O-ring (C).
...