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What would cause the heater not to work on a Jeep Grand Cherokee?
Wiki User
∙ 12y ago
The most common cause is a broken blend door. You can read the HVAC codes by turning the system on, holding down the AC and re-circ buttons simultaneously while turning the driver's side temp control knob one click clockwise. The codes will flash on the LCD display. I expect you will see a 54 and 56 indicating the blend doors. There is an aftermarket fix for this common problem with a video showing the repair process. The aftermarket fix is called the Heater Treater.
The dealer will want to remove the dash and plenum box to effect a repair which is an expensive process and will run around a thousand dollars. You can do it youself with better results and much lower costs.
Wiki User
∙ 12y ago
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What would cause the heater to blow cold air out on both sides of a 2001 Grand Jeep Cherokee?
The HeaterTreater is an after market kit that solves heater and AC for the Jeep Grand Cherokee and Laredo. It is much cheaper than the dealership fix and is easy to install. For diagnosis and info, check out www.heatertreater.net or search eBay for "heatertreater".
What would cause the heater not to work on a 2002 jeep grand Cherokee limited?
The most common problem is with the blend doors. Check heatertreater.net for diagnostic information and an inexpensive fix.
What would cause the heater to only give off a little bit of heat in a 1996 Jeep Grand Cherokee?
Did you check the thermostat? If so, try the heater core. check the air mix door in the heater it may be stuck and letting outside air in
What would cause the heater in your 2002 Jeep Grand Cherokee not to blow hot air?
Most likely a broken blend door. Check heatertreater.net for diagnostic information and an inexpensive fix.
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if the rear ac is working then you probably have a damper door that is inoperative. this is in the heater/evaporator box. so if it isn't working then you will be heating and cooling at the same time out of the heater box.
What would cause the floorboard to be soaking wet on a Pontiac Grand Prix?
windshield leaking heater core or heater core hoses.
Why would a passenger side heater be blowing cold air in a 2002 Jeep Grand Cherokee?
The HeaterTreater is an after market kit that solves heater and AC for the Jeep Grand Cherokee and Laredo. It is much cheaper than the dealership fix and is easy to install. For diagnosis and info, check out www.heatertreater.net or search eBay for "heatertreater".
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usually the factory alarm
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