service brake system light

Hi I have a 2003 GMC Sierra 5.3 4x4 which had a few rusty brake lines leaking and the Service Brake System light and the Parking Brake warning light is on.The rusty leaking lines were replaced and the brakes return to normal but the both warning lights are still on. Can anyone tell me how to get these warning lights off. Thanks

Hi I have a 2003 GMC Sierra 5.3 4x4 which had a few rusty brake lines leaking and the Service Brake System light and the Parking Brake warning light is on.The rusty leaking lines were replaced and the brakes return to normal but the both warning lights are still on. Can anyone tell me how to get these warning lights off. Thanks

May need to have codes cleared to get the lights out. Will need to access a scanner capable of reading all codes, "p" and "c" codes in particular, to clear the codes.