GM 12698371
Water Pump, Front

To change the engine front cover first remove the Intake Manifold, camshaft covers and dump off the engine coolant. Next, unplug the water outlet with the Radiator Hose, take off the generator by not stopping the power steering pipes from the power steering pipes, and place the power steering fluid reservoir aside for access. After that, remove the crankshaft balancer, camshaft position sensors, belt tensioner, camshaft position actuator solenoid valves from the front cover. Then, remove the engine front cover with the Water Pump and dismantle it, not allowing sharp or metal gasket scrapers to clean the sealing surfaces. Clean the sealing areas for engine front cover carefully and consume compressed air to blow the engine coolant away from the cooling paths and oil pan scraper. Assemble the engine front cover and hold with pin en-46109. Replace the camshaft position actuator solenoid valves and camshaft position sensors, crankshaft balancer, power steering pump, and its pulley. Etc. Then, install the power steering fluid reservoir, generator bracket with generator and belt tensioner, water outlet, and purge vent hose to water outlet. Fill the cooling system, installen the camshaft covers and the Intake Manifold, install the drive belt tensioner, and fill the cooling system once more.

To replace engine front cover, remove frame from body along with engine and transmission, as on engine replacement remove. Then, remove the Intake Manifold, camshaft covers and water outlet housing assembly, the drive belt tensioner, the Water Pump Pulley, power steering pump, the crankshaft balancer, and the camshaft position sensors. Also, take off the actuator solenoid valves for the camshaft position from the front cover and generator. It should be noted that 22 m8 bolts and 3 optional m12 bolts need to be removed before the front cover can be disassembled from the engine block. After displacing the appliance of the engine front cover install the fresh front covers then the originator, camshaft position actuator solenoid valves, camshaft position sensors, crankshaft balancer, power steering pump, water pump pulley, water outlet housing assembly, drive belt tensioner, camshaft covers, intake manifold, and finally reinstate the frame with the engine and the transmission, keeping a complacency for engine loading steps. Use the following special tools: en 46109 (Guide Pin Set), en-48383 (Camshaft Retaining Tools), and en-48589 (Crankshaft Rotational Socket).

Remove the camshaft covers.

Install the water outlet, reconnect the purge vent hose, fill the cooling system, and reinstall the camshaft covers, followed by the intake manifold for LLT engines or the upper and lower intake manifold for LP1 and LY7 engines, and finish by putting the engine cover back in place and filling the cooling system again.

Assemble the engine front cover and use the EN 46109 to install it.

Remove the engine mount and bracket, followed by the engine front cover to water pump bolt.