Owner's Manual
Page 292
... U.S. That damage would not be covered by use of gasoline. You should not have to add anything to your vehicle experiences problems due to dirty injectors or valves, try a different brand of improper fuel would not be covered under your warranty. If your fuel. Some gasolines ... deposits from forming, allowing your authorized GM dealer for fuel that contains methanol. ask the attendant where you will help keep fuel injectors and intake valves clean. General Motors does not recommend the use these gasolines, particularly if they comply with the specifications described...
... U.S. That damage would not be covered by use of gasoline. You should not have to add anything to your vehicle experiences problems due to dirty injectors or valves, try a different brand of improper fuel would not be covered under your warranty. If your fuel. Some gasolines ... deposits from forming, allowing your authorized GM dealer for fuel that contains methanol. ask the attendant where you will help keep fuel injectors and intake valves clean. General Motors does not recommend the use these gasolines, particularly if they comply with the specifications described...