runs and drives forward but wont reverse..will select reverse but no pull

Hello, sounds like perhaps there is a concern with the automatic transmission - internally, hydraulically. It sounds like the gear is being selected, but engagement is an issue. A diagnostic tool can be utilized to check the engagement of the gear; once validated, it can be determined what steps are further needed for testing. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops