Periodic change of manual steering gear lubricant should not be performed and the housing should not be drained. During its service life, the steering gear requires no lubrication.
If a seal is replaced or the gear overhauled, refill the gear housing with 13 oz. of GM Steering Gear Lubricant (Part No. 1051052) or its equivalent. Do not use EP chassis lubricant and do not overfill the gear housing.