Recommended Fuel
Use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, an audible knocking noise, commonly referred to as spark knock, might be heard when driving. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. If heavy knocking is heard when using gasoline rated at 87 octane or higher, the engine needs service.
See also:
How to Check
Use a good quality pocket-type gauge to check tire pressure. Proper tire inflation
cannot be determined by looking at the tire. Check the tire inflation pressure when
the tires are cold, meaning t ...
Tires
Every new GM vehicle has high-quality tires made by a leading tire manufacturer.
See the warranty manual for information regarding the tire warranty and where to
get service. For additional inform ...
Memory Seats
On vehicles with the memory feature, the controls on the driver door are used to program and recall memory settings for the driver seat and outside mirrors. ...