Check Gas Cap Light
Buick Rainier / Buick Rainier Owners Manual / Instrument Panel / Warning Lights, Gages, andIndicators / Check Gas Cap Light

If your vehicle has this light, it will come on if your gas cap is not securely fastened.
See also:
How to Add Coolant to the CoolantRecovery Tank
If you have not found a problem yet, but the
coolant level is not at the FULL COLD mark, add
a 50/50 mixture of clean, drinkable water and
DEX-COOL® engine coolant at the coolant
recovery tank.
...
Leather
Leather, and lighter colored leather in particular, will need more frequent cleaning to prevent the buildup of dust, dirt, and colors transferred from other items so that these do not become permanent ...
Brake Adjustment
Every time the brakes are applied, with or without the vehicle moving, the brakes
adjust for wear. ...
