The AC is also controlled by the ECU ,, when mine went out it had plenty of refrig but the clutch was toast because the fan clutch wasn t working correctly, Changed AC ,,,then fan and all it well
The AC is also controlled by the ECU ,, when mine went out it had plenty of refrig but the clutch was toast because the fan clutch wasn t working correctly, Changed AC ,,,then fan and all it well
Actually it's controlled by a separate body module which is under the fuse box
2003- 3500 RWD Automatic. S & B intake, BD Intercooler, Pusher Air Horn, MM3 Double R Tuning, Turbo Timer, electric Flex-a-lite fans, FASS 95, 50 HP tips, upgrade to 351 turbo, 3.42 gears, Twin air compressors, air bags, Remote dual oil filters, Hellwig sway bar, Front Winch. Home made Fuel Heater, BD Exhaust brake with Torque Lock. Tons of TLC
There is a blower motor resistor down by the blower motor under the dash, usually when that goes out your high speed will still work
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