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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1045 (Engine Controls And Fuel - 4.3L - DTC P0016 To DTC P0336) >> DTC P0324, P0325, P0326, P0327, P0328, P0330, P0332, or P0333 >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2008 GMC Sierra and 2008 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect a DMM to the KS signal circuit and to the KS low reference circuit at the KS.
  2. Set the DMM to the 400 mv AC hertz scale and wait for the DMM display to stabilize at 0 Hz.
    3. IMPORTANT: Do not tap on plastic engine components.
  3. Tap on the engine block with a non-metallic object near the KS while observing the signal indicated on the DMM.
  4. The DMM should display a fluctuating frequency while tapping on the engine block.
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