OnStar Services
See also:
Gasoline Octane
If the vehicle has the 3.9L V6 engine (VIN Code 1) or the
3.9L V6 engine (VIN Code M), use regular unleaded
gasoline with a posted octane rating of 87 or higher. If the
octane rating is less tha ...
Uniform Tire Quality Grading
Quality grades can be found
where applicable on the tire
sidewall between tread shoulder
and maximum section width. For
example: ...
Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can
be obtained from your dealer/retailer.
Maintenance Replacement Parts
...
