Chevrolet Sonic Repair Manual: Cooling System Draining and Filling
- Draining Procedure
-
- Remove the coolant pressure cap from the radiator surge tank.
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
- Remove the front compartment front insulator cover. Refer to Front Compartment Front Insulator Cover Replacement.
- Place a drain pan under the drain cock.
- Loosen the radiator drain cock (1).
- Drain the cooling system.
- Lower the vehicle.
- Inspect the coolant.
- Follow the appropriate procedure based on the condition of the coolant.
Warning:
To avoid being burned, do not remove the radiator cap or surge tank cap while the engine is hot. The cooling system will release scalding fluid and steam under pressure if radiator cap or surge tank cap is removed while the engine and radiator are still hot.
- Normal in appearance—Follow the filling procedure.
- Discolored—Follow the flush procedure. Refer to Coolant System Flushing.
- Filling Procedure
-
- Raise and support the vehicle.
- Tighten the radiator drain cock (1) to 2 Y (18 lb in)
.
- Install the front compartment front insulator cover. Refer to Front Compartment Front Insulator Cover Replacement.
- Lower the vehicle.
- Slowly fill the radiator with a 50/50 coolant mixture until the coolant level reaches the base of the radiator surge tank. Refer to Approximate Fluid Capacities.
- Allow 30 seconds for the coolant level to stabilize and continue to fill the coolant filler neck until the level stabilizes for at least 2 minutes.
- Start the engine and allow to the engine to idle in PARK or NEUTRAL with the parking brake engaged.
- Slowly fill the coolant mixture until the level stabilizes at the base of the radiator surge tank.
- Install the coolant pressure cap.
- Raise the engine RPM to 2500 rpm for 30?E0 seconds.
- Shut the engine OFF.
- Allow the engine to cool, remove coolant fill cap and repeat steps 4?E0 until the coolant level has completely stabilized within the radiator surge tank.
- Inspect and if necessary, fill the coolant reservoir bottle as necessary.
- Rinse away any excess coolant from the engine and the engine compartment.
- Inspect the cooling system for leaks.
- Top off the radiator surge tank if necessary.
Caution:
The procedure below must be followed. Improper coolant level could result in a low or high coolant level condition, causing engine damage.
Caution:
Refer to Fastener Caution.
Note:
Use a 50/50 mixture of DEX-COOL antifreeze and clean drinkable water.
Cooling System Description and Operation
Cooling System
The cooling system maintains the engine operating temperature at the efficient
level under any speed and operating condition. When the engine is cold, the
cooling system ...
Engine Coolant Air Bleed Hose Replacement (LUV)
Engine Coolant Air Bleed Hose Replacement
Callout
Component Name
1
Engine Coolant Air Bleed Hose Clamp (Qty: 2)
...
Other materials:
Passenger Sensing System
The vehicle has a passenger sensing system for the front outboard passenger position.
The passenger airbag status indicator will light on the instrument panel when the
vehicle is started.
United States
Canada
The words ON and OFF, or the symbol for on and off, will be visible during the
...
Electrical System Overload
The vehicle has fuses and circuit breakers to protect against an electrical system
overload.
When the current electrical load is too heavy, the circuit breaker opens and
closes, protecting the circuit until the current load returns to normal or the problem
is fixed. This greatly reduces the c ...
Timing Belt Upper Front Cover Installation
Install the timing belt upper front cover (1).
Caution: Refer to Fastener Caution.
Install the 2 timing belt upper front cover bolts (2) and tighten to
6 Y(53 lb in).
...
0.0058