Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2005 Buick Century CustomFACTORY OEM SERVICE PROCEDURE
Removal Procedure
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information
- Remove the lower air deflector. Refer to Radiator Air Baffle and Deflector Replacement - Lower in Engine Cooling.
- Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement in Engine Mechanical - 3.1L.
- Disconnect the crankshaft position (CKP) sensor electrical connector.
- Note the routing of the sensor harness before removal.
- Remove the harness retaining bolt (4) and the clip (3).
- Remove the CKP sensor bolts (4).
- Remove the CKP sensor (1).
Factory Service Tools
Use the Manual With the Right Hardware
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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.