Mechanics

THERMOSTAT REMOVAL AND INSTALLATION

2000 Chevrolet Impala • 189,000 miles

Im basically planning on changin the thermostat for a friend of mine tommorow
And I would like a step by step jus to make sure I dot my I and cross my t's
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Moneysam
August 20, 2012.



THERMOSTAT

Removal

1. Remove the air cleaner intake duct.

2. Partially drain the cooling system.

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

4. Remove the radiator inlet hose from the water outlet housing.

5. Remove the exhaust crossover pipe.

6. Remove the water outlet housing bolts.

7. Remove the water outlet housing and the gasket.

8. Remove the thermostat.

9. Clean the water outlet mating surfaces.

Installation

1. Install the thermostat.

2. Install the water outlet gasket and housing.

3. Install the water outlet housing bolts. Tighten the bolts to 25 N.M (18 ft lbs).

4. Install the exhaust crossover pipe.

5. Install the radiator inlet hose to the water outlet housing.

6. Use the Hose Clamp Pliers to reposition and install the hose clamp to the water outlet housing.

7. Install the air cleaner intake duct.

8. Fill the cooling system. Refer to COOLING SYSTEM BLEEDING.

COOLING SYSTEM BLEEDING

1. Open air bleed screw located on thermostat housing 2-3 turns. Slowly fill cooling system through radiator neck to base of radiator neck. Wait 2 minutes. Recheck fluid level. Add coolant to restore level to base of radiator neck.

2. Install radiator cap. Close air bleed screw. Fill coolant reservoir with 1 quart (.95L) of coolant.

NOTE: The Low Coolant warning/indicator lamp may come on after this procedure. If after operating the vehicle so that the engine heats up and cools down three times, the Low Coolant warning/indicator lamp does not go out, or fails to come on at the ignition check, and the coolant is above the full cold mark in the reservoir, refer to Low Coolant Warning/Indicator Lamp in Electrical Diagnosis. If at any time the Temperature warning/indicator lamp comes on, immediate action is required. Turn OFF the engine and allow the vehicle to cool. Do not remove the coolant recovery reservoir cap at this time.


KHLow2008
Aug 20, 2012.