Chevrolet Cobalt Service & Repair Manual: Engine Coolant Temperature Sending Unit R&R
| Refer to Fig. 1
when performing the following procedure. |
| 1. |
Disconnect the negative battery cable. |
| 2. |
Remove the cover from the underhood
electrical center. |
| 3. |
Remove the underhood positive battery
terminal lug. |
| 4. |
Disconnect the positive battery cables
from the underhood electrical center. |
| 5. |
Reposition the body harness from the
electrical center top cover. |
| 6. |
Loosen all of the underhood electrical
center bolts. |
| 7. |
Remove the underhood electrical center
(1) from the vehicle. |
| 8. |
Remove the engine control module. |
| 9. |
Disconnect the electrical harness from
the junction block bracket. |
| 10. |
Remove the bracket lower bolts (2),
junction block bracket support nut (1), and the junction block bracket
(3), Fig. 2. |
| 11. |
Partially drain the cooling system. |
| 12. |
Remove engine coolant temperature sensor
and disconnect electrical connector. |
| 13. |
Reverse procedure to install, noting
the following: |
| |
a. |
Torque engine coolant temperature
sensor to 15 ft. lbs. |
| |
b. |
Torque junction block bracket
nut and lower bolts to 89 inch lbs. |
| |
c. |
Torque underhood electrical
center bolts to 89 inch lbs. |
| |
d. |
Torque underhood positive battery
terminal lugs to 133 inch lbs. |
|
Fig. 1 Engine coolant temperature sensor replacement
Fig. 2 Junction black bracket replacement
1.
Drain engine coolant into suitable
container.
2.
Reposition coolant expansion tank inlet
hose clamp using hose clamp pliers tool ...
Refer to Fig. 1
when performing the following procedure.
1.
Partially drain the coolant system.
2.
Remove the thermostat.
...
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