Pettinger previously played for the Zebras between 2009 and 2011 before leaving to sign for Gainsborough Trinity.
The keeper started his career at Scunthorpe United before agreeing a dream move to Premier League Everton where he spent two seasons before moving to Grimsby Town on a two year deal. Recently he has been working as goalkeeper coach at Scunthorpe United.
Zebra's boss Mick Gray said, "Petts is a top keeper at this level. I've worked with him before and know what he's about. He will also work with our young keepers, from the age of 7 right up to the first team squad which will be great for everyone at the club"