GM 91176515 Seal,Crankshaft Rear Oil

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In this procedure, the transmission must be taken out of the vehicle. No need to drop the oil pan or remove the seal retainer when replacing the seal. Nevertheless, this method is not recommended for use since it has a stiff lip and one may twist it in the retainer bore when trying to fit or even damage it during installation. Try to pry out the old seal if you dare. Simply place multi purpose grease on both surfaces of the crankshaft seal journal as well as on the lip of new seal before gently knocking it home with a hammer handle. This being so, one can tap down this seal into place slowly using a flat end tool such as an extension bar and watch its stiffness carefully. Take your time or else you might spoil everything for yourself by hurting the plumb line. But this method is still highly suggested provided that the oil pan must be removed too along with its retainer gasket. Take off all bolts from the oil pan after removing it raising up to peel off all old gasket materials from it and similarly from another retainer that was adjacent thereto; thereafter position them side by side on a work bench resting on two pieces of wood block and push out that old seal using punch and hammer through its backside till removal thereof from front face on which flange was developed again by automaker for reasons stated above. Drive a block of wood/piece tubing slightly smaller in diameter than outside diameter of new plug through new plug with punch/hammer until tightly fitting is secured within that receptacle while carrying lubrication first set petroleum jelly across sealing surface plus rings contacting upper ring alone should touch bottom one making certain they have been placed squarely over groove surrounding cylinder head then carefully lower cylinder cover onto block aligning holes beneath mounting studs connote just tightened retainers kind screw down evenly without tightening single cap bolt only tightening lastly ever more torque each individual stud nut apply loctite medium strength threadlocker remain safely position for required riveting, then reinstall gasket make sure aligned properly otherwise they may blow themselves loose subsequent firing due improper installation and reassemble entire top end of engine finishing by snugging once again while applying no further pressure since does not turn freely back forth even if such a thing were possible whereupon pull towards yourself until it comes out completely before lowering down onto floor or ground from which should then be dragged along until reaches chassis area underneath vehicle body leave right where situated when lifting upwards next attaching fresh fasteners at appropriate locations around bottom plate. There is no one answer to this question since the steps are just retraced which were used in removing them.

The transmission must be removed from the vehicle for this procedure.

Reinstall the timing belt and related components, then run the engine and check for oil leaks.

The old seal can be removed by driving it out from the backside using a hammer and punch, while supporting the seal retainer on two wood blocks.

Yes, it is possible to do so without removing the timing chain cover, but you may need to remove the radiator for better access to the seal.