To keep fuel systems clean, TOP TIER detergent gasoline is recommended. See Fuel (Gasoline).
If TOP TIER detergent gasoline is not available, one bottle of GM Fuel System Treatment Cleaner added to the fuel tank at every engine oil change, can help. GM Fuel System Treatment Cleaner is the only gasoline additive recommended by General Motors. It is available at your dealer.
Ground Repair
Electrical GroundsProper electrical system function relies on secure, positive, corrosion-free groundconnections. Loose, stripped, or corroded connections increase the possibility ofimproper system function and loss of module communication. These conditions may alsolead to unnecessary repairs and co ...