GM 84988713
Power Steering Pump

Placing a drain pan underneath the vehicle is crucial before starting to replace the Power Steering Pump on 4.8l, 5.3l, and 6.0l models. The procedure starts by disassembling the lower intermediate shaft to power steering gear retaining bolt before disconnecting the lower intermediate shaft from the power steering gear. Start by elevating then supporting the car before taking off the tire and wheel. The Power Steering Pump installation requires hose disconnect from the reservoir outlet, power steering gear outlet or cooler hose, and power brake booster inlet through the wheel well and using caps to block dirt entry. First lower the vehicle to expose the rear Power Steering Pump bolt which needs removal followed by front mounting bolts until the Power Steering Pump can be removed from the vehicle. Detach the rear bracket from the Power Steering Pump by removing its rear bracket mounting nuts. The Power Steering Pump requires its rear bracket to be attached first using mounting nuts that should be tightened to 50 nm (37 ft. Lbs.). Replace the Power Steering Pump inside the vehicle while fastening the front mounting bolts to 50 nm (37 ft. Lbs.) and the rear mounting bolt to 41 nm (30 ft. Lbs.). You must elevate the vehicle and then confirm that the power steering hoses follow their original path after opening the hose caps. Attach the power brake booster inlet hose at the Power Steering Pump through the wheel well then tighten its fitting to 33 nm (24 ft. Lbs.). The power steering gear outlet hose and cooler hose and reservoir outlet hose must be reconnected from the wheel well opening. The first step entails putting back the tire and wheel before lowering the vehicle where technicians must fasten the lower intermediate shaft to the power steering gear using the 61nm (45 ft. Lbs.) torque setting. Install the Power Steering Pump pulley before bleeding the system and removing the drain pan positioned under the vehicle.