Rainier AWD L6-4.2L VIN S (2005)
fan noise can be expected with the updated PCM software calibrations.
The last area of customer concern is the operation of the HVAC system blower motor. For vehicles equipped with automatic control HVAC systems
(RPO CJ2), the blower motor fan speed will be limited to 80% of maximum when the HVAC system is operating in the automatic mode. To obtain
maximum blower motor speed, instruct the customer to manually adjust the blower motor speed to the highest setting.
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