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Ignition Control Module
Ignition Timing Adjustment
Knock Sensor
Spark Plug Wires
Spark Plugs
Catalytic Converter System
Catalytic Converter(s) and Muffler if attached as
assembly **
Exhaust Manifold (7/70 Only Cadillac 4.6L, Grand Prix
Right Side 3.8L, U-Van and Aztek 3.4L, and
C/K Truck <14,000 GVWR 8.1L*)
Exhaust Manifold with Catalytic Converter attached
as assembly **
Exhaust Manifold Gasket
Exhaust pipes and/or Mufflers (when located between
catalytic converters and exhaust manifold)
Positive Crankcase Ventilation System
Oil Filler Cap
PCV Filter
PCV Oil Separator
PCV Valve
Exhaust Gas Recirculation System
EGR Feed and Delivery Pipes or Cast-in Passages
EGR Valve
EGR Valve Cooler (6.6L DURAMAX
EGR Vacuum Pump Assembly
®
(6.6L DURAMAX
Diesel)
Secondary Air Injection System
Air Pump
Check Valves
Evaporative Emission Control System
(Gasoline Engines)
Canister
Canister Purge Solenoid Valve
Canister Vent Solenoid
Fuel Feed and Return Pipes and Hoses
Fuel Filler Cap
Fuel Level Sensor
Fuel Limiter Vent Valve *
Fuel Tank Filler Pipe (with restrictor)
Fuel Tank(s) *
Fuel Tank Vacuum or Pressure Sensor
®
Diesel)
23
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