GMC Workshop Manuals
Savana 3500 V8-4.8L (2009)
Powertrain Management > Ignition System > Crankshaft Position Sensor > Component Information > Service and Repair > Crankshaft Position Sensor Replacement > Page 3455
Crankshaft Position Sensor: Service and Repair
Crankshaft Position System Variation Learn
1. Install a scan tool.
(DTC) List - Vehicle (See: Computers and Control Systems/Testing and Inspection/Diagnostic Trouble Code Descriptions) for the applicable
3. Select the crankshaft position (CKP) variation learn procedure with a scan tool.
1. Accelerate to wide open throttle (WOT).
10. Apply and hold brake pedal.
displays the condition that inhibits the procedure. The scan tool monitors the following components:
CKP sensors activity-If there is a CKP sensor condition, refer to the applicable DTC that set.
Camshaft position (CMP) sensor activity-If there is a CMP sensor condition, refer to the applicable DTC that set.
Engine coolant temperature (ECT)-If the ECT is not warm enough, idle the engine until the engine coolant temperature reaches the correct
5. Enable the CKP System Variation Learn Procedure with a scan tool.
Important: While the learn procedure is in progress, release the throttle immediately when the engine starts to decelerate. The engine
6. Accelerate to WOT.
Procedure is complete. If the scan tool indicates DTC P0315 failed or did not run, refer to DTC P0315 (See: Computers and Control
10. Turn OFF the ignition for 30 seconds after the learn procedure is completed successfully.
P0315 is set:
A CKP sensor replacement
An engine replacement
A ECM replacement
A harmonic balancer replacement
A crankshaft replacement
Any engine repairs which disturb the CKP sensor relationship
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