Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hello, you'll need a serate remover and installation tool in most cases. IF the seal was installed wrong you may be able to get it out with a regular seal puller.
Both tools are made by Kent moore The remover is J-43320 and installer is J-42849 (clicking on blue area will take you to page where they can be purchased)
They are expensive new and do come up on eBay often so you may want to check there or if it's a one time deal see if your local GM dealer would possibly rent you the tool.