A/c blower with electronic climate control

HVAC climate contol , Heat an A/C blower motor not working ! The blower motor works for both heat an A/C . Manual or automatic climate control ? Blower motor is bad or blower motor control module is . videos on youtube on testing blower motor electrical circuits .

Do you know how to do automotive electrical testing ? How to read an use a wiring diagram ? Do you have manual or automatic climate control ? Automatic has a control processor (electronic )
You would need to take Rear Quarter Trim Panel off- Right Side (TrailBlazer, Envoy, Bravada) To get at the blower motor for testing electrical circuits . This video i have posted is for the front blower motor , you test the AUX . blower motor the same . Blower Motor Problems Auto Repair Help

Free wiring diagrams at
http://www.bbbind.com/free_tsb.html

HVAC Blower Motor Circuit Electric Testing Techniques You Need to Know

That is the heater / AC blower motor ! There are electrical circuits and relays and blower motor resistor , blower motor etc... Electrical testing is the way to diagnose blower motor circuit . Looking at a wiring diagram to see what controls the blower motor on your particular vehicle would be the first step in diagnosing your problem . Do you know how to do automotive electrical testing , how to read or follow a wiring diagram ? Videos on youtube show how to test blower motor and related parts and wiring . Blower Motor and Resistor Diagnostics by Wells

Defective blower motor or problems in the Automatic climate control.

Electronic climate control power module . Don't know what relay you replaced because this vehicle has no blower motor relay . 1990 Cadillac DeVille Power Module

You will not only need the automatic climate controls, you will need everything to make the system work. The main wiring harness, the electronic control actuators for the blend doors, automatic systems usually have a variable speed blower motor and solid state resistor, the temperature sensor. You would be better off trading your vehicle for one that came from the factory with climate control.

IS IT THE BLOWER MOTOR OR THE CLIMATE CONTROL UNIT ..ALSO THERE IS A IN LINE BLOWER MOTOR RESISTOR THAT BOLTS IN TO THE LOWER DUCTS WHEN THOSE GOT OUT IT CAN ALSO CAUSE THE BLOWER MOTOR NOT TO WORK....HOWEVER IF ITS THE BLOWER MOTOR ANY FROM 95-99 NISSAN MAXIMA WILL WORK ALSO I THINK THE 95-99 NISSAN QUEST WILL WORK..CLIMATE CONTROL WILL WORK FROM OTHER MAXI'S AS LONG AS IT'S THE SAME TYPE(ELECTRONIC OR DIAL TYPE)

There are 2 relays for the blower. The low blower relay and the high blower relay. They are both located
under the hood in the center of the firewall.
The low will have 4 wires from it, one lt. blue and 3 brown. The high will have 5 wires 1 purple(to blower mtr.) 1 black 1 dk blue 1 red and 1 orange.
Also, the blower resistor is in the same area if needed. Hope this helps.

Sounds like the problem is more with the blower motor assembly itself. The blower motor have micro-proccers built itnto them which comunicate with the control heads and do the actual regulating of the fan motor. Dealers have computers with diagnostic software which allows them to monitor what is happening in the eletronic controls of the vehicle. Electronic diagnostics without the diagnostic software makes it very diffecult to pinpoint the actual item causing the problem.

there is a blower motor control unit under the hood on the right side near the firewall, unplug this and it should stop running. normal problem for a lot of gm cars with electronic climate control