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Home >> GMC >> 2005 >> Jimmy Part Time, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - (Introduction) >> Description and Operation >> Distributor Ignition (DI) System Description >> Secondary Ignition Components
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Secondary Ignition Components

The distributor is only used as a means to operate the CMP sensor and to distribute spark in the correct sequence. Since the distributor has no influence on base timing the distributor is not adjustable on V6 engines. The distributor position can be adjusted on V8 engines because the chance of crossfire between terminals is greater due to the proximity of the terminals. The spark is distributed through conventional carbon core wires to the spark plugs. The plugs are tipped with platinum for long wear and higher efficiency.