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How to control the Heat on a 1996 cadillac deville?

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With that year deville...its more than likely the blower motor

It appears your blower motor is not working correctly on your 1980 Cadillac Coupe Deville. The vents are for both AC and heat. You may also be losing vacuum pressure. If you cannot find the source, your mechanic can help you do so.

i have the same problem with my 91 deville need answer please thank you in advance

The water pump is on the front of the engine. If the pump goes bad, the engine can over heat causing severe damage.

We just bought a 1999 Deville, so I can't help with other years. The system is the best! You don't choose heat or cool. After you choose auto or on, you raise or lower the temp. If you turn the temp lower than the outside temp, the air conditioner will cool and if you turn the temp up higher than the outside temp, the heat will come on. I love it! No more cold air blowing on me to cool down. It is true "climate control" with sensors doing all the work!

Rent or aquire a temperature gun and make sure the heat off the radiator is within 15 degrees of the operating temp.

This is actually common for most cars. The reason is that the heater pulls heat away from the engine into the car itself.

You might also notice that the passenger side air is slightly warmer than the drivers side. Try to flush the heater core, it might be clogged.

usually running hot coincides with a lack of coolant. Low coolant levels will eliminate circulation of coolant through heater core. ALMOST END RESULT----NO HEAT

press off and warmer buttons on climate control center. warmer is also the pass side heat button.

That's the way the automatic climate control system operates. As you lower the temp desired the air delivery will move from the bottom vent to the top vents. Mid range temps will deliver a blend of cool and warm air. This is also determined by the outside and inside air temps. Very little ability for the passenger to control air flow

Probably a blown head gasket caused by studs pulling out of the engine block. Very common with those engines.

Answerreplace the motor, tighten the terminals in the connector common problemMy mechanic found a bad ground where it attaches behind the alternator.

Answer1. electrical short 2. bad switch 3. dead motorAnswerMore than likely it's a bad motor. Cadillac revised this version with more heat tolerable one on later models. I just replaced mine with the new version and it works great.. a little tricky to remove, but well worth doing yourself.Unplug the switch from the blow motor and look at the connections. They tend to fry on the 95-97 cadillacs. There are three prons in that plug and one of them are not getting a good conection. It might solve your problem.My mechanic found a bad ground wire that attaches behind the alternator. The motor plug had been fried, trying to make the ground through it. It also cured my cruise control problem.I have a 1979 Cadillac DeVille and no air was coming out of the vents forcefully. I checked the connection to the Climate Control Switch (the on and off control for Heat/AC & Fan speed) and found a loose connection in the wiring that sends Signals for the Climate Control as it was called back then.

depends on where and how you check it. If you are using a laser thermometer on the radiator, it should be about 210 degrees. I assume that you are asking because of poor heat.' if you have poor heating, first with the vehicle warm and heater on high check to see if both hoses going to the heater are hot if they are not, there is a problem with the heater core being plugged or the heater control valve not operating properly. If they are both hot, there is a cabin air filter in your car that is like a furnace filter and must be changed (could be plugged) or there may be a heater control door broken

The resistors that I know of are behind the control for the heat and A/C. I had an issue with no heat and not blowing air until level 4. I replaced the module and everything works fine.

Pressure test system to determine where leak originates to repair Water Control Valve, on pass. side behind engine.

Assuming you are talking about a coolant temp sensor. Normally they will cause a hard start condition and check engine light. You can pull codes on a cad by holding the off and warmer buttons on climate control at the same time til display flashes. Codes will display in sequence.

No, the atc head only controls the air and heat.No, the atc head only controls the air and heat.

L-A- Heat - 1996 is rated/received certificates of: Australia:M

If it is leaking coolant. And you changed the thermostat. I would then move to this section. Flush the radiator and the heater core. This can be done at a certified shop with a reliable mechanic.

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