GM 24505924
Thermostat Unit

After removing the engine cover you must drain your vehicle's cooling system before you replace the Thermostat (L36). Aggregated point l j 38185 hose clamp pliers operate to loosen the inlet Radiator Hose clamp on the Thermostat Housing before the technician removes the hose from the housing. Begin by removing the bolts securing the Thermostat Housing before taking out the housing and Thermostat. Follow this step with removing the actual Thermostat. Before adding the new Thermostat and the Thermostat Housing you should clean the gasket mating surfaces together with the housing and intake port. Tighten down Thermostat Housing bolts to 20 nm (15 ft. Lbs.) torque or less. To finish the repair you must reinstall the inlet Radiator Hose while clamping it then refill the cooling system before putting back the engine cover.

The first step to serve and fix a Thermostat requires removing the engine cover. Start by draining the cooling system followed by using spring hose clamp pliers (J 38185) to loosen the clamp at the Thermostat Housing inlet. First move the inlet hose out of the housing before removing Thermostat Housing bolts so you can gain access to the Thermostat . Clear the contact surfaces of both the gasket and housing and intake port. Begin the installation process by placing the Thermostat in position then install the Thermostat Housing with an updated gasket. Secure the Thermostat Housing bolts with torque at 20 nm (15 ft. Lbs.) before you attach the inlet Radiator Hose and clamp. After system refill you should check for any cooling system leaks before you can install the engine cover.

Service and repair work starts with removing the engine cover before moving forward. Use spring hose clamp pliers (J38185) to loosen clamp on the inlet Radiator Hose at the Thermostat Housing. Loosen the inlet hose at the housing and remove the Thermostat Housing bolts before removing the housing and its Thermostat. All service items start by cleaning the housing gasket engagement areas together with the intake port surface. Install the new Thermostat before putting the Thermostat Housing in place alongside a fresh gasket. Secure the Thermostat Housing with its bolts to a torque of 20 nm (15 ft. Lbs.). After reconnecting the inlet Radiator Hose with its clamp install new engine cooling fluid into the system before leak testing and mounting the vehicle's engine cover.

You should start by draining part of the cooling system before beginning Thermostat (LY7) replacement. You must never separate the components within the upper and lower Intake Manifold system. The installation process requires upper Intake Manifold removal alongside lower Intake Manifold extraction. Detach the surge tank hose from the Thermostat position while removing the coolant pipe/Thermostat housing bolt followed by the coolant pipe bolt . The coolant inlet pipe requires removal from the Thermostat housing before discarding the coolant pipe o-ring seal . The first step is to remove all bolts from the Thermostat before pulling out the Thermostat while disposing of the Thermostat seal. Install the Thermostat while using a new Thermostat seal then tighten the Thermostat bolts to 10 nm (89 inch lbs.). First position the coolant pipe together with its new seal on the fasteners (1 and 3). Next connect the surge tank hose correctly to the Thermostat. Install both the upper and lower intake manifolds before completing the cooling system.

Begin Thermostat replacement starting with fuel injector sight shield removal. First drain some coolant from your engine's cooling system. Disconnect the throttle body air inlet duct with extreme caution. Use hose clamp pliers (J38185) to readjust the hose clamp which secures the water outlet housing then remove the Radiator Hose from this housing component. First uninstall the bolts from the water outlet housing before you can remove the water outlet housing together with its gasket. Check the mating surfaces of the Thermostat while you clean them. Start by positioning the Thermostat and placing the gasket into its correct spot then install the water outlet housing. Use rtv sealer (GM P/N 1052366 or equivalent) to install water outlet housing bolts before tightening them to 27 nm (20 ft. Lbs.). For reinstallation use hose clamp pliers (J38185) to place and secure the hose clamp on the water outlet housing. Reinstall the throttle body air inlet duct and procede to fill the cooling system before installing the fuel injector sight shield. Finally, inspect for leaks.

Your tool list for Thermostat replacement in a 3.8l engine should begin with hose clamp pliers (J 38185). Start by taking off the fuel injector sight shield while partially draining engine coolant out of the coolant system. The next step involves separating the throttle body air inlet duct from its installation. Use hose clamp pliers (J 38185) to manipulate the water outlet housing hose clamp positioning before removing the Radiator Hose. Start by removing bolts from the water outlet housing before you detach the water outlet housing combined with its gasket to expose the Thermostat. Examine and prepared the mating surfaces after removing the Thermostat. Reinstall the new Thermostat together with a gasket after positioning them. Then replace the water outlet housing as an installation step. Wash and dry each water outlet housing bolt prior to applying rtv sealer gm p/n 1052366 or equivalent before securing them with 27 nm (20 ft. Lbs.) torque. Reposition the Radiator Hose on the water outlet housing by using hose clamp pliers (J 38185) followed by clamp installation. Finish your installation by adding the throttle body air inlet duct before filling your cooling system and reinstalling the fuel injector sight shield while checking for leaks throughout the process.

Inspect and clean the mating surfaces.

Reinstall the inlet radiator hose and clamp, refill the cooling system, and install the engine cover.

Remove the inlet hose from the thermostat housing.

Install the thermostat.

Take out the thermostat housing bolts and the housing itself, followed by the thermostat.

Install the thermostat housing with a new gasket and secure it with the thermostat housing bolts, tightening them to 20 Nm (15 ft. lbs.).

Reattach the surge tank hose to the thermostat.

Remove the upper intake manifold along with the lower intake manifold.

Next, remove the water outlet housing bolt and the stud, followed by the water outlet housing and the gasket.

Remove the air cleaner intake duct.

Remove the thermostat housing bolts and the thermostat housing, followed by the thermostat.

Use the Hose Clamp Pliers (J38185) to loosen and move the inlet radiator hose clamp at the thermostat housing.

Use Hose Clamp Pliers (J38185) to reposition the hose clamp.

Use the Hose Clamp Pliers (J 38185) to reposition the hose clamp from the water outlet housing, then remove the radiator inlet hose from the water outlet housing.

Reinstall the water outlet.

Place the engine coolant thermostat back into position.

Place the engine coolant thermostat back in position.

Use the Hose Clamp Pliers (J 38185) to reposition and install the hose clamp.

Reinstall the air cleaner intake duct before filling the cooling system.

Reinstall the exhaust crossover pipe and connect the radiator hose to the thermostat housing.

Use the Hose Clamp Pliers (J38185) again to reposition and install the hose clamp to the water outlet housing.

Install the water outlet gasket and housing.

First install the thermostat, followed by the gasket and the water outlet housing.

Use the Hose Clamp Pliers (J 38185) again to reposition and install the hose clamp to the water outlet housing.

Utilize the Hose Clamp Pliers (J 38185) to reposition the hose clamp from the water outlet housing.

Reattach the radiator inlet hose to the water outlet housing and use the Hose Clamp Pliers (J 38185) to reposition the hose clamp.