The GMC K1500 is a series of trucks manufactured with power steering as optional equipment. The pump that circulates the fluid can leak or become damaged and require replacement. This replacement can take the average backyard mechanic about two hours to complete, but it could take up to four hours to repair newer models of GMC trucks.
Disconnect the battery by turning the positive terminal bolt counterclockwise and removing the lead.
Disconnect the lower power steering line by turning the line nut counterclockwise. Allow the pump to drain in the drain pan. Once the pump is drained, disconnect the upper line by turning the line nut counterclockwise.
On older models, turn the adjustment mount bolt counterclockwise until the tension on the primary drive belt is relieved. Remove the belt from the power steering pump pulley. Remove the remaining mount bolts by turning them counterclockwise. Maneuver the pump from the engine.
On newer models, press the tension pulley arm to slacken the belt enough to slide it from underneath the idle pulley wheel. Release the tension pulley arm. There should then be enough slack to take the belt from the power steering pump pulley. It may be necessary to remove the A/C compressor on some models. Remove it by having it evacuated of all freon, removing the wiring harness adapter plug, removing the line nuts, and then turning the mount bolts counterclockwise; taking the compressor out gives improved access to the power steering pump. Remove the pump by using the specialized tool (available for rent at an auto parts store) to turn the center mount bolt counterclockwise. Maneuver the pump from the engine compartment.
Replace the pump and attach the mount bolts by turning them clockwise. Reattach the line nuts by turning them clockwise. Replace the drive belt by the tension pulley method (serpentine belts), or using the adjustment bolt to pull the pump to the desired belt tension. Replace the fluid to the proper cold level.
Reconnect the battery by attaching the lead and turning the positive terminal bolt clockwise.
