The process to interchange the crankshaft place (CKP) sensor on many Buick models is fairly involved, since you have to take away the drive belt and balancer/pulley from the crankshaft. Then you will reset your car computer utilizing a scan tool. Learn by way of the entire process first before making an attempt to remove the sensor, and be sure to have the special instruments required.

Buick Crankshaft Sensor Removal Instructions

1. Open the hood and disconnect the black (ground) battery cable using a wrench.
2. Remove the drive belt following the specific instructions in your automobile proprietor’s manual. On some Buick Century models you don’t want to remove the drive belt. Read Step 7 for reference, and continue with Steps three to 7 if necessary.
3. Loosen the front passenger-side wheel lugs using a lug wrench.
4. Increase the entrance of your Buick using a floor jack, and help it on two jack stands.
5. Finish removing the wheel lugs from the entrance passenger facet wheel using the lug wrench; then take the wheel/tire assembly off the wheel hub and set it aside.
6. Remove the splash protect cover using the ratchet and socket.
7. Find the crankshaft sensor on the aspect of the engine block, in case you have a Century. Some, but not all, Century models have the CKP sensor bolted to the engine block under the spark plugs and wires area. Unplug the electrical connector and unscrew the sensor mounting bolts to remove the sensor from the engine utilizing a ratchet and socket. In case you have a unique model, continue with the remainder of the steps.
8. Ask a helper to carry the flywheel using device No. J-37096 (flywheel holder) or equivalent and a ratchet as you unbolt the crankshaft balancer/pulley assembly with a ratchet, ratchet extension and socket. (See Assets for more information.)
9. Detach the balancer/pulley from the crankshaft using tool No. J-38197-A (harmonic balancer puller) or an equal pulley puller (see Sources for extra information). Use the 1/4-inch bolts that come with the software to put in the puller on the balancer/pulley meeting, and screw the bolts 1 1/four inches into the pulley.
10. Unscrew the three mounting nuts from the crankshaft place sensor (CKP) defend using the ratchet, ratchet extension and socket. Then take away the shield. Some Century models do not need this CKP shield.
11. Unplug the CKP sensor electrical connector. On some Century models, you will need to remove the CKP sensor harness-retaining clip before you can unplug the sensor. Use a ratchet and socket, and make an observation of the harness routing for proper installation.
12. Unscrew the 2 CKP-sensor mounting stud bolts using a wrench or ratchet, ratchet extension and deep socket.
13. Remove the CKP sensor from the vehicle.

Buick Crankshaft Sensor Installation Instructions

1. Install the CKP sensor, and tighten the mounting bolts utilizing the ratchet and deep socket.
2. Plug the CKP sensor electrical connector. If you have a Century mannequin with the sensor mounted on the facet of the engine, you can lower the car now and reconnect the black (ground) battery cable using the wrench. Otherwise, continue with the remainder of the steps.
3. Set the crankshaft sensor protect in place and tighten the three mounting nuts using the ratchet, ratchet extension and socket, in case your Buick mannequin is equipped with this shield.
4. Set up the balancer/pulley on the crankshaft, and tighten the bolt utilizing the ratchet, ratchet extension and socket. Ask a helper to hold the flywheel using tool No. J-37096 or equivalent as you tighten the bolt.
5. Install the splash protect cover utilizing the ratchet and socket.
6. Set up the wheel/tire assembly, and tighten the wheel lugs sufficient to carry the wheel firmly in opposition to the wheel hub using the lug wrench.
7. Decrease the automobile and end tightening the wheel lugs.
8. Install the drive belt following the directions in your automotive owner’s manual.
9. Reconnect the black (floor) battery cable using the wrench.
10. Perform the CKP system variation study process using a scan tool. Consult your automotive proprietor’s guide for the proper instructions on your explicit model.