See also:

Notes on selecting, mounting and replacing tires
- Only mount tires and wheels of the same type and make. - Only mount tires of the correct size onto the wheels. - After mounting new tires, run them in at moderate speeds for the first 60 mil ...

High outside temperatures
If DEF heats up to over 122 °F (50 °C) for extended periods, e.g. as a result of direct sunlight on the DEF reservoir, DEF can decompose. Ammonia vapors develop as a result. WARNING When o ...

Ride & Handling
The GL has a unibody frame — rare among full-size SUVs — and its four-wheel-independent air suspension swaps traditional coil springs for inflatable air bladders. Its ride height can be varied to ...