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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 930 (Engine Controls And Fuel - 4.3L - DTC P0016 To DTC P0336) >> DTC P0336 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.
  1. Ignition OFF, disconnect the harness connector at the CKP sensor.
  2. Test for less than 1 ohm of resistance between the CKP low reference circuit terminal B and ground.
    • If greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
  3. Ignition OFF, inspect the CKP sensor for correct installation.
    • If the CKP sensor is loose, inspect the sensor and the O-ring for damage, replace as necessary.
    • If any parts are worn or damaged, replace as necessary.
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