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Home >> Pontiac >> 2001 >> Aztek Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 945 (Engine Controls - 4.3L (Introduction)) >> Description and Operation >> Distributor Ignition (DI) System Description >> Powertrain Control Module (PCM)
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Powertrain Control Module (PCM)

WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The PCM controls all ignition system functions, and constantly corrects the basic spark timing. The PCM monitors information from various sensor inputs that include the following:

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