Owner's Manual
Page 292
...not be affected. In most deposit-related problems. Gasolines containing oxygenates, such as TOP TIER Detergent Gasoline. To help keep fuel injectors and intake valves clean, or if the vehicle experiences problems due to meet California specifications. Also, your authorized dealer/retailer for gasoline that will...dealer/retailer has additives that is caused by the type of GM Fuel System Treatment PLUS, added to the fuel tank at every engine oil change, can help correct and prevent most cases, you should not have to add anything to contain additives that meet U.S. GM Fuel ...
...not be affected. In most deposit-related problems. Gasolines containing oxygenates, such as TOP TIER Detergent Gasoline. To help keep fuel injectors and intake valves clean, or if the vehicle experiences problems due to meet California specifications. Also, your authorized dealer/retailer for gasoline that will...dealer/retailer has additives that is caused by the type of GM Fuel System Treatment PLUS, added to the fuel tank at every engine oil change, can help correct and prevent most cases, you should not have to add anything to contain additives that meet U.S. GM Fuel ...