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:
Under the Hood
A 291-hp, 4.2-liter inline-six-cylinder is standard, and a 300-hp, 5.3-liter
V-8 is optional. A four-speed automatic is the sole transmission. ...
Instrument Panel Cluster
The instrument panel cluster is designed to show how the vehicle is running.
It shows how fast the vehicle is going,
how much fuel has been used, and many other things needed to drive safely and
...
Safety
Standard features include antilock brakes, an electronic stability system,
traction control and side curtain airbags. Backseat side-impact airbags are
optional. ...
