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Discussion Starter #1
So I've been searching for an hour or so and can't find this. I need to change my Crankshaft Position Sensor but I can't find where it's located. I have a 2009 3.7L I5. Can anyone tell me where it's located?
 

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The crankshaft position sensor is located on the drivers side of the engine. It's low and towards the firewall.

Crankshaft Position Sensor Replacement

Removal Procedure

  1. 1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Disconnect the engine wiring harness electrical connector (3) from the crankshaft position (CKP) sensor (1).
  3. Remove the CKP sensor bolt.
  4. Remove the CKP sensor from the engine block.
  5. Discard the O-ring seals.

Installation Procedure

  1. Install new O-ring seals to the CKP sensor.
  2. Lightly lubricate the O-ring seals with clean engine oil.
  3. Install the CKP sensor into the engine block.
  4. Add sealer GM P/N 12346004 (Canadian P/N 10953480) to the CKP sensor bolt threads.


  5. Install the CKP sensor bolt.

    Tighten
    Tighten the CKP sensor bolt to 10 N·m (89 lb in).

  6. Connect the engine wiring harness electrical connector (3) to the CKP sensor (1).
  7. Lower the vehicle.
  8. Perform the CKP System Variation Learn Procedure. Refer to Crankshaft Position System Variation Learn.
 

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huh, I always wondered where that little rascal was :muknow:
 

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Rich is the man :high5:
 

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Discussion Starter #6
What is the GM Pipe sealer in the regular world? Is it like a high temp gasket maker or something?
 

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Crankshaft Position System Variation Learn

Important: The crankshaft position (CKP) system variation learn procedure is required when the following service procedures have been performed, regardless of whether DTC P0315 is set:
  • Engine replacement
  • Engine control module (ECM) replacement
  • Crankshaft damper replacement
  • Crankshaft replacement
  • CKP sensor replacement
  • Any engine repairs which disturb the crankshaft to CKP sensor relationship

Important: The scan tool monitors certain component signals to determine if all the conditions are met to continue with the CKP system variation learn procedure. The scan tool only displays the condition that inhibits the procedure. The scan tool monitors the following components:
  • CKP sensor activity--If there is a CKP sensor condition, refer to the applicable DTC that set.
  • Camshaft position (CMP) signal activity--If there is a CMP signal condition, refer to the applicable DTC that set.
  • Engine coolant temperature (ECT)--If the engine coolant temperature is not warm enough, idle the engine until the engine coolant temperature reaches the correct temperature.

1. Install a scan tool.
2. Monitor the ECM for DTCs with a scan tool. If other DTCs are set, except DTC P0315, refer to Diagnostic Trouble Code (DTC) List - Vehicle for the applicable DTC that set.
3. With a scan tool, select the CKP system variation learn procedure and perform the following:
3.1. Observe the fuel cut-off for the applicable engine.
3.2. Block the drive wheels.
3.3. Set the parking brake.
3.4. Place the vehicle's transmission in Park or Neutral.
3.5. Turn the air conditioning (A/C) OFF.
3.6. Cycle the ignition from OFF to ON.
3.7. Apply and hold the brake pedal for the duration of the procedure.
3.8. Start and idle the engine.
3.9. Accelerate to wide open throttle (WOT). The engine should not accelerate beyond the calibrated fuel cut-off RPM value noted in step 3.1. Release the throttle immediately if the value is exceeded.

Important: While the learn procedure is in progress, release the throttle immediately
when the engine starts to decelerate. The engine control is returned to the operator
and the engine responds to throttle position after the learn procedure is complete.

3.10. Release the throttle when fuel cut-off occurs.​

4. The scan tool displays Learn Status: Learned this Ignition. If the scan tool indicates that DTC P0315 ran and passed, the CKP variation learn procedure is complete. If the scan tool indicates DTC P0315 failed or did not run, refer to DTC P0315 . If any other DTCs set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for the applicable DTC that set.

5. Turn OFF the ignition for 30 seconds after the learn procedure is completed successfully.
 

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Discussion Starter #8
well sh*t... that seems to me something only a dealer can do? I have OBDII reader that I clear check engine stuff with but I don't have a scan tool.
 

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Discussion Starter #10
Teflon tape works in a pinch.

I was thinking I might use teflon tape. But if I have a learn procedure anyway, do you think I'd be able to limp the truck to the dealership with the new sensor not "learned" in, so they could learn it for me?
 

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Discussion Starter #12
I appreciate that. I called the dealer to see if they'd do the relearn process for me and they read me what you posted word for word. But they couldn't tell me if the truck would run with out re-learning.
 

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Discussion Starter #13
Just to report back, I put the new sensor in today and I did not need the re-learn process. One problem I had was that when I set my torque wrench for 7.3 lbs/ft (89 lbs/in) I felt the bolt start to strip. I'm not sure if my wrench is out of calibration or what but here's hoping it does not leak!
 
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