Yukon XL 2500 2WD V8-8.1L VIN G (2004)
6. Reposition the ignition coil.
7. Disconnect the crankshaft position (CKP) sensor electrical connector (4).
8. Use penetrating oil and allow the oil to soak around the CKP sensor prior to removing the sensor.
9. Remove the CKP sensor bolt.
10. Twist the CKP sensor back and forth.
11. Pull the sensor straight up in order to remove the CKP sensor.
12. Inspect the CKP sensor for wear.
IMPORTANT: The CKP sensor is designed to contact the reluctor wheel of the crankshaft. Wear may be noticeable on the end of the sensor.
13. Normal CKP sensor wear will be shown on the wear strips (1) and no wear will be shown on the sensor sensing element (2).
14. Excessive or abnormal sensor wear will be shown on the sensing element (2).
15. If excessive/abnormal wear is present, replace the sensor.
