Crankshaft Rear Oil Seal Removal

Place the collecting basin underneath.

Fig 1: Crankshaft Position Sensor And Bolt

Courtesy of GENERAL MOTORS COMPANY

Remove the crankshaft position sensor bolt (2).
Remove the crankshaft position sensor (3) from the crankshaft rear oil seal housing (1).

Fig 2: Crankshaft Position Sensor Reluctor Ring And Oil Seal Housing

Courtesy of GENERAL MOTORS COMPANY

CAUTION:

Do not allow the crankshaft encoder wheel to come into contact with external magnetic fields or sharp metal objects. Do not drop the crankshaft encoder wheel. Do not damage the rubberized encoder track. Failure to follow these precautions may cause damage to the component.

Remove the crankshaft rear oil seal housing (1).
Remove the crankshaft position sensor reluctor ring (2).

Fig 3: Holes At 5 O'clock And 7 O'clock Positions

Courtesy of GENERAL MOTORS COMPANY

NOTE:

The diameter of the hole must not exceed 2 mm (0.0787 in). If the diameter of the hole exceeds 2 mm (0.0787 in), the bolt of EN-6624 remover will not be able to grip.

Only make a hole at the 5 o'clock and 7 o'clock positions (1), these are the only positions where is a cavity behind the seal ring.

Fig 4: Scribe Tool

Courtesy of GENERAL MOTORS COMPANY

Using a suitable tool, such as a scribe (1), make a hole in the crankshaft rear oil seal.
Position the scribe (1) at the outer edge of the crankshaft rear oil seal.
Remove the seal ring.

Fig 5: Crankshaft Rear Oil Seal Removal Tool

Courtesy of GENERAL MOTORS COMPANY

Install EN-6624 remover (1) to the crankshaft rear oil seal and tighten the bolt.

Fig 6: Special Removal Tools

Courtesy of GENERAL MOTORS COMPANY

Install the EN-328-B remover (1) to EN-6624 remover (2) and remove the crankshaft rear oil seal.