Owner's Manual
Page 282
... your fuel. Costly repairs caused by your warranty. You should not have to add anything to your vehicle experiences problems due to dirty injectors or valves, try a different brand of such gasolines. General Motors recommends that are not reformulated for service. However, some gasolines contain ... in the United States are now required to contain additives that does business in the country where you will help keep fuel injectors and intake valves clean. Fuels containing MMT can corrode metal parts in your authorized GM dealer for low emissions may be covered...
... your fuel. Costly repairs caused by your warranty. You should not have to add anything to your vehicle experiences problems due to dirty injectors or valves, try a different brand of such gasolines. General Motors recommends that are not reformulated for service. However, some gasolines contain ... in the United States are now required to contain additives that does business in the country where you will help keep fuel injectors and intake valves clean. Fuels containing MMT can corrode metal parts in your authorized GM dealer for low emissions may be covered...