1996 GMC Savana Van Owner's Manual - Page 227

I f your vehicle is certified t o meet California Emission Standards (inciicatecl on the underhood tune-up label), it is designed to operate on fuels that meet California specifications. If such fuels are not available i n states your vehicle adopting California emissions standards, will operate satisfactorily on fuels meeting federal specifications. but emission control system performance may be affected. The malfunction indicator lamp on Y ~ L I I ' instrument panel may turn on and/or your vehicle may fail a smog-check test. I f this OCCLII-S, return t o YOLK authorized G M dealer for diagnosis to determine the cause of failure. I n the event it is cletermined that the c a ~ ~ofethe condition is the type of fuels used, repairs s may not be covered by your warranty. To provide cleaner air, a l l gasolines are now required to contain additives that will help prevent deposits from forming i n your engine and fuel system. allowing your emission control system to function properly. Therefore, you should not have t o add anything t o the fuel. I n addition, gasolines containing oxygenates. such as ethers and ethanol, and reforn~~lated gasolines may be available i n your area to help clean the air. General Motors recmnlnends that you use these gasolines ilthey comply with the specifications described earlier. NOTICE: Your vehicle was not designed for fuel that contains methanol. Don't use it. It can corrode also damage metal parts in your fuel system and plastic and rubber parts. That damage wouldn't be covered under your warranty. I n Canada, some gasolines contain an octane-enhancing additive crdled MMT. I F you L I S such f ~ ~ e lyour ~ s. emission control system performance may deteriorate and the malfunction indicator lamp on your instrument panel may turn on. I f this happens, return to YOLII' authorized G M dealer for service. 6-3