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I put new antifreeze and a new thermostat in my 2005 equinox and still no heat

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My guess is the heater matrix (Radiator) is blocked. Start up and get the water warmed up. Look on the bulkhead and trace where the feed and return pipes, approx. 1"diameter are, and see if they are as hot. If there is a big difference then it is likely the flow is low. There is no real way to unclog the matrix other than replacement. Check also to see if operating the heater controls opens a valve, in which case see if its operating properly. That will be down by the heater assy.

Posted on Nov 18, 2014


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Posted on Jan 02, 2017

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SOURCE: Water pump on 2005 Chevy Equinox

Water pump is locate on the front center of the engine.

I will rate water pump change as a 7/10 in difficulty scale.

You should check for special tool(s) requirement from the library before you start.

It's a good time to change the drive belt at the same time.

50/50 coolant mix is fine.

If you haul heavy load or in cold climate then bump it up to 60/40 mix

DO NOT FORGET to find or draw the belt routing diagram before you undo the tension.

A 30 second sketch will save you a lot of time.

Posted on Jul 15, 2009

  • 32 Answers

SOURCE: why does the heat in my 1999 dodge stratus only

the flap in the air box may be broken or not ingageing all the way check for vac leaks and switch the air from defrost to vent and see if its working properly

Posted on Jan 05, 2010

  • 65 Answers

SOURCE: Have no heat. Have replaced heater core,

I don't know your vehicle, but does it have a blower door tucked in where the heater core is? If it DOES and that's broken then it could be the whole problem. It would mean it isn't switching from the A/C side of things to the heat side of them. Hope this helps, good luck! Also, just looked up the proper name for what I'm talking about, it's called a "blend door" and I think your car has one. It's what I would check, again, good luck!

Posted on Jan 20, 2010

  • 12650 Answers

SOURCE: My 2005 Equinox is overheating. We have replaced

[check fans possible bad sensor or fan motor ]<<< most likely problem/or radiator and reservoir may need to be flushed the 05 was known for having radiator hose problems the hoses in some would deteriorate causing a smell and overheating problems --the other 05 problem was head gasket which can cause the overheat problem but u would have other symptoms rough idle ,steam from tailpipe,oil level high and looking like chocolate milk the 05 problems usually caused the problems early in ownership within 10,000 miles and recheck stat and pump new doesnt mean free from defects

Posted on Jan 25, 2010

  • 1 Answer

SOURCE: antifreeze leak in 2005 Chevrolet Equinox, how much to fix.

Hi, if you have searched this problem recently on this car you will find that there is an issue with this particular engine (3.4 litre) that GM used on various vans and SUV's and the DEX coolant that is reccomended for this engine. Apparently the coolant corrodes the aluminum parts (intake, gaskets) causing them to deteriorate faster. I have had the unfortunate experience with this issue. First it was diagnoised as a cracked lower intake- car was leaking oil. Had that fixed but overheating issues persisted. Tried flushing the coolant but that only solved the problem for a few weeks and overheating started again, and coolant was boiling over in the reservor. Finally took it to GM (was having my own mechanic fix it prior to this) and they just called to say the gaskets are leaking into the combustion chamber and that is a $2000 (canadian) job. IF they find that one, or both the gaskets (there are 2) are also cracked (unlikely that both would be cracked) it is a $3000 job. I am considering trading in my car to the GM dealership. Only offerring $2000 for trade in as is. My advise is get your car to a GM service shop so the problem is properly diagnosed. I was told that I may have had this fixed under warranty if my vehicle dd not have 176,000 KM on it. Not sure if this is BS. Please connect with me here and let me know of your progress. I am stuck without a car and have a huge decision to make. I have been on tons of forums and there has not been one concrete solution that I found prior to taking it in to GM.

Posted on Dec 07, 2011

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It sounds like your thermostat is going bad. However if you start noticing any liquid in your floorboard the heater core is on it's last leg. Check your manufacturer's specs before adding any anti-freeze. More than likely your Chevy requires only the use of DexCool antifreeze. It is very important to be sure that you do not ever mix brands of antifreeze if they require DexCool. Mixing any other coolant with DexCool will cause a chemical reaction causing the liquid to turn to gel. You can end up with internal corrosion of vital engine parts, engine lock up, and serious overheating as a result. As a general rule for engine safety and performance you should always check to make sure that you are adding the same color of coolant to what is already in the car. If it's green don't add orange. Before changing colors (types) of antifreeze in your vehicle, you will need to flush out your engine till it all runs out.

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I have a 2005 Chevy Equinox, keeps over heating. We changed the thermostat, then the water pump, but it is still running hot. No leaks and no check engine light. Not sure what else the problem can be.

These trucks are bad about developing an air lock in the coolant system. Be sure that there is no air in the system after sealing. This can be done by using the bleeder on the top of the engine near the water jacket. Hope this helps. good luck.

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On a 2005 Equinox where is the coolant cap? Not that antifreeze holding chamber, but the cap where you are not suppose to open when its hot cause it shoots out everywhere. I want to put all new antifr

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2005 chevy equinox overheating.. we changed the thermostat, still overheating. and now there is gray/white smoke from exhaust???

sounds like you have a blown head gasket.
be sure engine is cold, open water tank be sure it is full than start car with tank open see if you see bubbles in the tank. If so possible head gasket blown.

May 09, 2009 | 2005 Chevrolet Equinox

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