Crankshaft Position Sensor Location 3.7L

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.

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:

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.

copekyle said:

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

Click to expand...

Either Permatex® High Performance Thread Sealant (Part Number: 56521) or Permatex® High Temperature Thread Sealant (Part Number: 59214) is a suitable equivalent. Loctite 565 Thread Sealant is also equivalent.






The GM pipe sealant was $21 for 0.5 ounces. Permatex pipe sealant with teflon was only $5 for 4 ounces. Teflon tape works in a pinch.