P184C BUICK – Transmission Cooling Fan Control Circuit

P184C BUICK Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P184C BUICK Possible Causes

Faulty Transmission Cooling Fan,Transmission Cooling Fan harness is open or shorted,Transmission Cooling Fan circuit poor electrical connection

P184C BUICK Description

The primary purpose of the transmission cooling fan is to control the air flow moving across the transmission heat exchangers. The transmission cooling fan control system resides in the Chassis Control Module. The chassis control module receives transmission oil temperature and vehicle speed data to control the Pulse Width Modulated (PWM) duty cycle of the cooling fan. The chassis control module communicates on the High Speed GM Local Area Network (HS-GMLAN) serial data bus.