This is a common problem- the heater blend doors. These are motorized doors about the size of an index card that control whether hot or cold air comes from the vents. There may be two independent doors or both doors may operate together depending on whether you have dual zone temperature controls. They are located in the heating/air conditioning module, a long black plastic apparatus about the size of a Golf bag that contains the heater core, the air conditioning evaporator, the blower motor, the blend doors, and all the other parts to make hot or cold air and direct it to the needed location. Replacing the blend doors is a job for the experienced home mechanic. The proper job requires you remove the steering column and entire dashboard, drain both the coolant and air conditioning refrigerant, and remove large, heavy pieces from the car. A detailed explanation is located at wjjeeps dot com. I did the job myself and saved a bunch of money. You can too! Good luck!
you can find this out by googling recalls for 2001 jeep grand cherokee.
The 2001 Jeep Grand-Cherokee has 12 valves.
The 2001 Jeep Grand-Cherokee has overhead valves (OHV).
The 2001 Jeep Grand-Cherokee has a 4-speed automatic.
where is the fill tube for the transmission on a 2001 jeep grand cherokee
The 2001 Jeep Grand-Cherokee is a gas-powered vehicle.
The height of the 2001 Jeep Grand-Cherokee is 5 ft. 9.4 in. (69.4 in.).
The 2001 Jeep Grand-Cherokee is 15 ft. 1.5 in. (181.5 in.) long.
The 2001 Jeep Grand-Cherokee's turning circle is 37.4 ft..
The blend door controls how warm or cold the outlet air is.
The 2001 Jeep Grand-Cherokee has 57.8 in. of rear shoulder room.
The 2001 Jeep Grand-Cherokee has 58.9 in. of front shoulder room.