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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 935 (Engine Controls And Fuel - 4.8L, 5.3L, 6.0L And 6.2L - DTC P0231 To DTC P1255) >> DTC P0315 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 GMC Sierra, 2007 GMC Cab & Chassis Sierra, 2007 Chevrolet Silverado, and 2007 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: The CKP System Variation Learn Procedure may have to be repeated up to 5 times before the procedure is learned.
  1. Perform the CKP System Variation Learn Procedure. Refer to Crankshaft Position System Variation Learn .
  2. If the CKP System Variation Learn Procedure cannot be performed successfully, inspect for the following conditions:
    • Any worn crankshaft main bearings
    • A damaged or misaligned reluctor wheel
    • Excessive crankshaft runout
    • A damaged crankshaft-Refer to Crankshaft and Bearing Cleaning and Inspection .
    • Interference in the signal circuit of the CKP sensor
    • The ignition switch is left in the ON position, until the battery is discharged
    • An ECM power disconnect, with the ignition ON, that may have erased the CKP system variation values and set DTC P0315
    • Any debris between the CKP sensor and the reluctor wheel
    • If the ECM is unable to complete the learn procedure, replace the ECM.
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