Buick Regal: Coolant System Flushing
WARNING: In order to avoid personal injury, do not remove the cap or open the cooling system drains from a hot system. Allow the system to cool first.
NOTE: Do not use a chemical flush.
Store used coolant in the proper manner, such as in a used engine coolant holding tank.
Do not pour used coolant down a drain. Ethylene glycol antifreeze is a very toxic chemical.
Do not dispose of coolant into the sewer system or ground water. This is illegal and ecologically unsound.
Various methods and equipment can be used to flush the cooling system. If special equipment is used, such as a back flusher, follow the manufactures instruction. However, always remove the thermostat before back flushing the system.
1. Apply the park brake.
2. Drain the coolant. Refer to Cooling System Draining and Filling (Static) or Cooling System Draining and Filling (GE 47716).
3. Fill the coolant system with clean drinkable water. Refer to Cooling System Draining and Filling (Static) or Cooling System Draining and Filling (GE 47716).
4. Start the engine and run at 2.000 RPM until the thermostat opens.
5. Turn OFF the engine.
6. Drain the coolant system. Refer to Cooling System Draining and Filling (Static) or Cooling System Draining and Filling (GE 47716).
7. Repeat the above procedure until the water from the coolant system is colorless.
8. Drain the coolant system. Refer to Cooling System Draining and Filling (Static) or Cooling System Draining and Filling (GE 47716).
9. Add 3.8 liters (1.0 gal) of concentrated antifreeze since there will be some water in the system.
10. Add a mixture of 50/50 antifreeze and clean drinkable water until the level stabilizes at the weld seam on the surge tank. Refer to Cooling System Draining and Filling (Static) or Cooling System Draining and Filling (GE 47716).
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Radiator Cleaning
WARNING: NEVER spray water on a hot heat exchanger. The resulting steam
could
cause personal injury.
CAUTION: The heat exchanger fins are necessary for good heat transfer.
Do not brush
the fins. Thi
Engine Coolant Fan Wiring Harness Replacement (2.0L LTG)
Removal Procedure
1. Front Bumper Fascia Center Support - Remove.
2.
Clip (2) - Remove.
3. Disconnect the electrical connector. (1).
4.
Clip (1) - Remove [2x].
5.
Clip (1) - Remove.
6. Engine C
Engine Coolant Fan Wiring Harness Replacement (3.6L LGX)
Removal Procedure
1. Front Bumper Fascia - Remove.
2. Headlamp- Left Side - Remove.
3.
Engine Coolant Fan Wiring Harness (1) @ Air Conditioning Refrigerant Pressure
Sensor -
Disconnect.
4. Engine
SEE MORE:
Winter Driving
Driving on Snow or Ice
Snow or ice between the tires and
the road creates less traction or
grip, so drive carefully. Wet ice can
occur at about 0 ВєC (32 ВєF) when
freezing rain begins to fall. Avoid
driving on wet ice or in freezing rain
until roads can be treated.
For Slippery Road Driving:
DTC P175F
Diagnostic Instructions
Perform the Diagnostic System Check prior to using this diagnostic
procedure: Refer to Diagnostic System
Check - Vehicle
Review the description of Strategy Based Diagnosis:Strategy Based
Diagnosis
An overview of each diagnostic category can be found here: Refer to
