Tip & How-To about Chevrolet Impala

How to diagnose ALL vehicle NO heat problems

It is winter and you jump in your car start it up and turn the heater blower fan on.
You sit and wait...and wait.... NO HEAT !
Here are a few easy steps to help diagnose the problem:

1) After vehicle is completely warmed up, open your vehicles hood.

2) Grab a pair of gloves. Put them on, now put your hand with your glove on, on the TOP radiator hose. ( The top black radiator hose is the largest hose on the top of the radiator inlet running to the thermostat housing, in most vehicles)

3) Be careful NOT to touch ANY part of the engines cooling fan(s). Is the radiator hose HOT or COLD to the touch ?

If the hose is cold the easiest repair is to replace the thermostat. The thermostat helps regulate the engine temperature keeping it approximately 195 degrees Fahrenheit, and helps supply hot coolant to run through your vehicles heater core to keep you warm in the winter.

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1 Answer

Renault Megane Dynamique 1.6 2004 - Heater fan stopped working - wet front footwells


Im almost sure that your problem is a broken or leaking heater core and needs to be replaced cose 1 your coolant level allways will be low due to the leak and 2 it could damage your blower fan motor. if in winter time you need the heat fixit... If not you could cancel the 2 waters hoses going to the heater core. hope this helps.

Jan 28, 2014 | Cars & Trucks

1 Answer

My heat will only come on when the cord that gets plugged for the winter is plugged in. Abd when it is on i am unable to control the fan from the inside. I can also see that the wiring for the fan has been wired to that plug? got any suggestions


the cord that gets plugged in for the winter just works the block heater and warms the engine coolant to make winter starting easier. if you can not control blower motor fan speed then you probably have a bad blower resister or blower motor, that will need to be replaced. if the fan has been wired to the block heater wiring(plug)then it has to be disconnected and put back to original. the block heater works on household voltage120 volts) and the blower motor works on 12 volts. the blower motor may be burnt out due to the excess voltage supplied to it. check fuses as it may have burnt a fuse. depending on the damage caused you may have to take it to a repair shop to have things fixed properly.

Nov 29, 2013 | Cars & Trucks

1 Answer

My heat and air blower will not turn on it just stopped a few days ago which means my defroster doesn't work... how do I fix this?


The fan, which is the "air blower" for heat and A/C sits on its end in the heater box which is just above your front passenger's feet. It could be bad if it is not running when you turn on the fan switch. These cost about 50 bucks and are available at any parts store. Fairly easy to replace, disconnect the wiring plug, back out some screws, vacuum out the hole, reinstall in reverse order. Note some trouble shooting should be done to eliminate fuse and switch as bad guys.

Apr 04, 2011 | Saturn Ion Cars & Trucks

4 Answers

2001durango slt no heat in front


I have a 2001 Black Durango that had the same problem. There is a resister to the right of the ac/heat blower (underneath the dash on passaenger side). This needs to be replaced. You might want to replace the motor as well. Both are real easy. I had replaced the resister first and everthing worked fine for about 6 months and then my ac/heat would only works on high. I replaced the motor and now it works just fine. The resister was about $15 at dealership and the motor is prob around $40-$50. I hopes this helps. Good Luck!

Dec 21, 2008 | 2001 Dodge Durango

2 Answers

1999 astro van heat


100 % it will be the main blower fan for the heater/aircon has to seperate bits so the heater bit has gone

Sep 20, 2008 | 1999 Chevrolet Astro

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