Chevrolet 2000 C-Series Owner's Manual page 293

(24) = Check the air intake system installation
to see that gaskets are seated properly and all hose
connections, fasteners and other components are tight.
For gasoline engines, also check to be sure the air
cleaner housing is properly seated, that the cover
fits tightly and that the wing nut is tight. Tighten
connections and fasteners or replace parts as required.
(26) = Evaporative Control System Service (if equipped):
Check all fuel and vapor lines and hoses for proper
connections and any damage (or every 24 months,
whichever occurs first). Replace parts as needed.
(27) = Replace air cleaner filter (or every 24 months,
whichever occurs first). Replace filter more often if
driving in dusty conditions. Ask your dealer for the
proper replacement intervals for your driving conditions.
(28) = Replace spark plugs. Inspect wires for damage.
Check the wire boot and boot heat shield fit at spark
plugs and coil. Replace parts as needed.
(30) = Check the fuel tank, fuel cap and fuel lines for
damage which could cause leakage. Inspect fuel cap and
gasket for any damage. Check fuel cap gasket for even
filler neck imprint. Replace parts as needed.
(31) = Check EGR system as described in the service
manual. See "Service and Owner Publications" in
the Index.
(32) = Inspect Electronic Vacuum Regulator Valve
(EVRV) filter for excessive contamination or plugging.
If needed, clean filter with solution of soap and water,
let dry and install.
(33) = Check the PCV system for proper operation
and clean PCV valve. Replace hoses as needed.
(34) = Replace PCV valve and blow out the PCV valve
hose with compressed air. Replace hoses as needed.
(35) = Drain, flush and refill cooling system. See
"Recommended Fluids and Lubricants" in the Index
for what to use. Inspect hoses. Clean radiator, condenser,
pressure cap and neck. Pressure test cooling system and
pressure cap. For Caterpillar
refer to the Caterpillar Diesel Engine Operation &
Maintenance Manual for coolant recommendations
and change intervals.
(37) = Rear axle service: Change the lubricant. See
"Recommended Fluids and Lubricants" in the Index.
R
diesel engines, always
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