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HOMESERVICE MANUALSBUICK2007RAINIER AWD L6-4.2LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMCRANKSHAFT POSITION SENSORSERVICE AND REPAIR
2007 Buick Rainier AWD L6-4.2L

Crankshaft Position Sensor: Service and Repair

2007 Buick Rainier AWD L6-4.2LSECTION Service and Repair


Crankshaft Position Sensor Replacement

Removal Procedure

1. Raise and support the vehicle. Refer to Vehicle Lifting.




2. Disconnect the crankshaft position (CKP) sensor harness connector.
3. Remove the CKP sensor retaining bolt.
4. Remove the CKP sensor from the engine block.

Installation Procedure

Important: Inspect the sensor O-ring for the following conditions:

* Any wear
* Any cracks
* Any leakage

Replace the O-ring if necessary. Lubricate the new O-ring with engine oil before installation.

Notice: Refer to Fastener Notice.




1. Install the CKP sensor into the engine block.

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

2. Install the CKP sensor retaining bolt.
3. Connect the CKP sensor harness connector.
4. Lower the vehicle.
5. Perform the Crankshaft Position System Variation Learn.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.