Diesel Fuel Requirements and
Fuel System
Some states and provinces have restrictions on the
purchase of diesel fuel for light-duty vehicles and require
you to buy permits or pay special taxes. Some of these
restrictions apply only to residents, and others apply
to both residents and visitors. These restrictions can
change. To learn the current restrictions in any state
or province, contact your auto club, the police or other
officials.
Diesel Engine Fuel
Notice: Diesel fuel or fuel additives not
recommended in this manual could damage your
fuel system, fuel-operated heater (FOH) (Van models
only) and engine. Your warranty would not cover
this damage. And:
• Diesel fuel that has been mixed with engine oil
or automatic transmission fluid could damage
your engine and emission controls.
• Aftermarket diesel fuel additives are not tested
by General Motors. Some additives, particularly
those which contain alcohol or water emulsifiers,
may damage your fuel system. If you believe that
unique circumstances call for a fuel additive to
be used, consult your dealer for advice.
• If you ever run out of diesel fuel, it can be difficult
to restart your engine. To avoid all this, never let
your tank get empty.
If gasoline is ever accidentally added to the fuel
tank, to avoid severe engine damage, do not run
the engine until the fuel tank can be drained.
If you run out of fuel, Running Out of Fuel on page 5-11
tells you how to restart your engine.
5-2
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