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Generally speaking, the refrigerator side cools off of the freezer side operation. What makes this possible is what is known as an evaporator fan located on the freezer side behind the panels. If the fan is not running then the cold air is not being transferred to the refrigerator side.
Smart man using a scanner for the actual temp. Assuming you're not losing coolant....2 things I'd look at here, 1st is you may have air in the system, make sure to purge all the air. 2nd is your fan clutch, I've replaced a few fan clutches in my own Trailblazer. Have had them bad right out of the box brand new. Have had bad brand new fan clutches on 2 of my last Trailblazers. You should hear it engaging especially in stop and go traffic.
If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/
faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
this is an air circulation problelm. If the vents are clear, then check to see if the fan is blowing. If the fan is not working, it is a relatively easy repair to make. a few screws hold on the back panel that will expose the fan and you can get part numbers from the fan directly. Good luck.
If you have any questions feel free to ask. Let me know if you dont get diagrams(happens sometimes)
Reverse rotation water pump—2.5L and 4.0L engines
Before servicing the vehicle, refer to the precautions in the beginning of this manual.
Drain the cooling system.
Remove or disconnect the following:
NOTESome
4.0L engines are equipped with a fan clutch that threads Directly on to
the water pump shaft. This fan clutch is equipped with right-hand
threads.
NOTEDo not store the fan clutch assembly horizontally, silicone may leak into the bearing grease and cause contamination.
NOTEOne of the water pump bolts is longer than the others. Note the location for reassembly.
Negative battery cable
Electric cooling fan connector
Accessory drive belt
Engine cooling fan and pulley
Water pump pulley
Power steering pump
Lower radiator hose from the water pump
Heater hose
Water pump and discard the gasket
To install:
Clean the mating surfaces of all gasket material.
Install or connect the following:
Water pump using a new gasket. Torque the bolts to 17 ft. lbs. (23 Nm).
Heater hose
Lower radiator hose
Water pump pulley. Torque the bolts to 20 ft. lbs. (27 Nm).
Power steering pump
Engine cooling fan and shroud. Torque the bolts to 31 inch lbs. (3 Nm).
Accessory drive belt
Electric cooling fan connector
Negative battery cable
Fill and bleed the cooling system.
Start the engine, check for leaks and repair if necessary.
go to the local parts store and read the haynes book on how to replace the cooling fan.
or look on autozones site and they may have free repair info under the part
The compressor not working, relay switch on compressor not working Had repair man put new switch in .Last year put in new fan motor in freezer compartment the cool air was not circulating both problems made the fridge not to cool and drip water
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