Question about 2012 Chevrolet Cruze LS Sedan 1.8L 4-cyl. 6-speed Manual
Cooling fan running high speed
Posted by Anonymous on
Temp sensor or fan control switch or the A/C is engaged causing the fan to run at high speed
Posted on Mar 07, 2016
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Posted on Jan 02, 2017
Chevrolet 2004 TrailBlazer
Look next to the blower. You can remove the panel under the passenger side. Go through the glove box and move it down out of the way to access the electrical connector. Then remove two bolts and the electrical connector.
Posted on Apr 21, 2009
sounds like the blower motor resistor is bad,thats what controls the speeds. replace that and your fan should work just fine, good luck.
Posted on Nov 13, 2009
is the passenger side coming on? it is possible that it is setting the code for different speeds also. may want to check the cooling fan relays.
Posted on Aug 03, 2011
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A/C refrigerant pressure exceeds 1 310 kPa (190 psi).
After the vehicle is shut off if the engine coolant temperature at key-off is greater than 140?°C (284?°F) and system voltage is more than 12 volts. The fans will stay on for approximately 3 minutes.
The BCM and PCM/ECM command High Speed Fans on under the following conditions:
Engine coolant temperature reaches 110?°C (230?°F).
A/C refrigerant pressure exceeds 1 655 kPa (240 psi).
When certain DTCs set.
The three relays are located in the under hood fuse / relay box ! You need to have it checked for DTC'S -diagnostic trouble codes ! An you need a GM Tech 2 scan tool !
This diagnostic procedure supports the following DTCs:
DTC P0480 Cooling Fan 1 Relay Control Circuit
DTC P0481 Cooling Fan 2 and 3 or S/P Relay Control Circuit
DTC P0691 Cooling Fan 1 Relay Control Circuit Low Voltage
DTC P0692 Cooling Fan 1 Relay Control Circuit High Voltage
DTC P0693 Cooling Fan 2 and 3 or S/P Relay Control Circuit Low Voltage
DTC P0694 Cooling Fan 2 and 3 or S/P Relay Control Circuit High Voltage
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