No you cannot remove a repossession off your credit report if your cosigner has a judgement on the repossession.
i need to get a repossession off my credit report
The repossession stays on your credit report for 7 years.
You present proof that the repossession never occured. You can dispute it with the credit reporting agency.
The effect on your credit will depend on how the lender chooses to report it to the credit bureau. Sometimes a lender will be willing to report it 'paid as agreed' or 'settled' entry on the credit report rather than an actual repossession. If it is reported as an actual repossession or foreclosure it will be on your credit for seven years and negatively effect your rating.
A repossession will significantly lower your credit score, regardless of the balance. It will take around 7 years before the repossession is removed from the credit report.
It stays on your credit report 7 years from the date of settlement not the date of repossession.
Anytime a negative item is removed from your credit report, it will raise your credit score unless new collections are added to your report.