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Ok great. I wanted to make sure, some people refer to the Grand Cherokee and they are completely different vehicles.
The blower motor on the Cherokee is accessed from the engine compartment. Open the hood and look at the firewall on the far right side of the compartment and you'll see it.
The motor is mounted directly behind the a/c accumulator. To remove the motor you first have to reposition the accumulator. It's held down with a band clamp. You have to remove this clamp, recover the refrigerant from the a/c system, and remove the accumuator from the evaporator tube where it goes through the firewall. It will have a standard spring lock a/c quick connect fitting. Once it's off the evaporator you can swing it out of the way, unplug the blower motor and remove the screws holding it in, and remove the motor.
You pay the expert for their time when you hit the accept button. You did accept, and I thank you!
The switch won't have any power, it controls ground through the blower motor resistor and then to the motor. I take it your blower motor doesn't work at all? Do you have the Jeep with you and a test light or voltmeter to do some testing?
Let me know if you need any more help!
no cold air blowing out when ac is on but low pressure