GMC 1996 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
adopting California emissions standards, your vehicle
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 ~ ~ s e
of
the condition
is
the type of fuels used, repairs
may not be covered by your warranty.
I n Canada, some gasolines contain an octane-enhancing
additive crdled MMT. I F you
L I S ~
such f ~ ~ e l s . your
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.
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
metal parts in your fuel system and also damage
plastic and rubber parts. That damage wouldn't
be covered under your warranty.
6-3