2000 Jeep Grand Cherokee limited i have no heat or ac only cool air need to fix?

Answer 1

A heating flap inside the dash may have broken. If your passenger and driver side have the ability to be at different temperatures of heating, having the temperatures too far apart from each other can sometimes break this flap, making the vehicle unable to give you either heat or a/c, instead it just blows. This happened to my 2004 Grand Cherokee, its very annoying to fix, if that is your problem.

The first thing you should do is read the fault codes, to get a general idea of the problems you are having.

Since you have the 2000 Jeep Grand Cherokee Limited that has the HVAC system with the dual control (AZC ), you will be able to read the fault codes for your HVAC system from the control panel on the dash.

To read the fault codes:

1. Turn on the ignition switch.

2. Turn on the AZC system. The temperature settings should be displayed for both sides.

3. Simultaneously hold down the AC and the Re-Circ buttons.

4. Then turn the driver's side temperature (Left) control knob to the right (CW) one click.

5. Release the AC & Re-Circ buttons.

If there are no fault codes, the "00" display value will remain in the window.

If there are any codes, each will be displayed for one second in ascending numerical sequence (note: no effort is made to display faults in the order they occurred). The left side set temperature display will be blanked and the right side set temperature display will indicate current and historical codes (8 historical max) presently active.

Once all codes have been displayed, the system will repeat the fault code numbers. This will continue until the left side set temperature control is moved at least one detent position in either direction, by pressing both the A/C and Recirc buttons at the same time, or the ignition is turned off.