Question about 2006 Chevrolet Equinox

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I'm trying to find where my engine coolant heater electrical cord would be? I just bought this vehicle

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Hiya...the factory install this block-heater option that's usually installed at the left side of the engine bay area.
Pop open the hood and look around the black square air-filter housing area found at the left side (or at the corner behind the headlight area)
There should be a black wire harness routed around the air filter housing--it may be 'hidden' underneath the air filter around that area...hope it has this feature if so equipped.

Posted on Jan 31, 2009


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Posted on Jan 02, 2017

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SOURCE: Location of electrical cord for engine coolant heater

Unless your vehicle is diesel powered you probably don't have a coolant heater.

Posted on Feb 09, 2009

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Heaters slow at warming up

In normal circumstances the heater wouldn't begin blowing warm air until the vehicle has travelled 5 miles - call it 5 minutes. That's because the thermostat only begins to open at around that mileage/time and allows coolant to circulate around the engine. Before that - there just isn't any warm coolant in the heater matrix.

After 10 miles/10 minutes of normal driving the engine will be at its correct operating temperature and the coolant will be hotter - as will the circulating coolant in the heater matrix. That's when the heater blows the hottest air.

If you're sure that the heater has lost efficiency it may be due to air being trapped in the heater matrix/coolant system, or a blockage caused by limescale/engine corrosion within the heater matrix itself.

To remove any trapped air, set the heater to maximum, remove the radiator cap/coolant bottle cap and let the engine tick over for 10 minutes.

If the heater matrix is blocked/partially blocked, drain the coolant system, refill with plain water, set the heater control to open .. and let the engine tick over for 10 minutes. Drain it again.

Refill again with plain water and add a can of 'radiator flush'. Follow the instructions on the can of 'radiator flush'.

Drain again and refill with coolant/water.

If the heater is still inefficient then the only option is to replace it - and that's not an easy job.

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How do I determine why 2003 Pontiac Grand Prix blows no heat with step by step instructions?

The most common reason is the coolant is low.
Check coolant level when vehicle is cool.
If coolant is low start vehicle and fill radiator with coolant.
if coolant was needed high probability there is a leak
look at all cooling system hoses, thermostat housing, all over the engine to try and find leak and repair.

if coolant isnt low, make sure its not really dirty...reddish mud colored. If it is the radiator is probably clogged and needs to be flushed thoroughly..then refilled with coolant.

there will be two heater hoses coming out of firewall..they are connected to the heater core and one hose directs flow of coolant to the heater core, other hose directs flow away from heater core..start vehicle and run until engine is warm then feel each heater hose as close to the firewall as possible..if one hose is hot and other is cool..the heater core is clogged and will probably require replacement. also look in passenger floorboard if coolant is leaking there..heater core requires replacement.

if you check these things and find none of the issues, let me know, and I will tell you what to check next.
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2004 nission maxima heater blows cold air engine coolant level is fine

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I cannot find where to plug in my 2002 Oldsmobile Alero GX Coupe. 2.2L L4 ECOTEC Engine. the manual is not helpful. I even wonder if it has been removed. the manual says "Open the hood and unwrap the...

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My 1999 Chevy malibu keeps overheating even when the heater is on what is the problem?

You may have a radiator leak. Or your coolant level is low. Using the heater is not a solution to an overheating vehicle. You can usually smell coolant and see the leak. Often times a gasket can leak mixing engine oil and coolant, decreasing effectiveness of both sytems. Check color of fluids make sure the cooloant is viscus and not sludgy.

Also check coolant fan electric connections and fuses. The fan really cools down the engine moreso than coolant. It should kick on when your engine reaches a certain temp. If it does not the vehicle will overheat.

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How do you replace the heater core

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Be sure to consult the laws in your area before servicing the air conditioning system. In most areas, it is illegal to perform repairs involving refrigerant unless the work is done by a certified technician. Also, it is quite likely that you will not be able to purchase refrigerant without proof of certification.
Discharging, evacuating and charging the air conditioning system must be performed by a properly trained and certified mechanic in a facility equipped with refrigerant recovery/recycling equipment that meets SAE standards for the type of system to be serviced. If you don't have access to the necessary equipment, we recommend that you take your vehicle to a reputable service station to have the work done. If you still wish to perform repairs on the vehicle, have them discharge the system, then take your vehicle home and perform the necessary work. When you are finished, return the vehicle to the station for evacuation and charging. Just be sure to cap ALL A/C system fittings immediately after opening them and keep them protected until the system is recharged.
  1. Have the A/C system evacuated by a certified technician using approved equipment.
  2. Disconnect the negative battery cable.
  3. Remove the instrument panel. Refer to of this repair guide for this procedure.
  4. Remove the cowls, unplug the washer lines from the hood.
  5. Unplug the underhood lamp electrical, if equipped, then remove the hood.
  6. Remove the antenna and the PCM.

CAUTION Never open, service or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. Also, when draining engine coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantities. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.
  1. Drain the coolant into a suitable container and remove the coolant recovery reservoir.
  2. Disconnect the coolant hoses from the heater core at the firewall in the engine compartment.
  3. Remove the right headlamp assembly. Tag and unplug all necessary electrical connections.
  4. Remove right side fender.
  5. Remove the battery, battery tray, and the wheel house panel.
  6. Disconnect the A/C lines from the evaporator.
  7. Unfasten the heater box shield retainers and remove the shield.
  8. Unfasten the heater core mounting bolts from the engine compartment and remove the heater core fasteners from inside the vehicle.
  9. With the aid of an assistant inside the vehicle, gently pry back on the heater box while removing the evaporator housing assembly to ensure clearance of the stud.
  10. Remove the heater case, core and the seals.

To install:
  1. Install the seals, core and case.
  2. With the aid of an assistant inside the vehicle, pull forward on the heater box to make sure the evaporator core is in the correct position.
  3. Install the heater case fasteners. Tighten the bolt/screw to 40 inch lbs. (4.5 Nm) and the stud to 40 inch lbs. (4.5 Nm).
  4. Install the evaporator housing mounting bolts and tighten the bolt/screw to 40 inch lbs. (4.5 Nm).
  5. Install the heater box shield and tighten the retainers to 19 inch lbs. (2.2 Nm).
  6. Attach the A/C lines to the evaporator.
  7. Install the wheel house panel, the battery tray and the battery. Do not connect the battery cables just yet.
  8. Install the outer fender and attach all electrical connections that were disconnected.
  9. Install the right headlamp assembly.
  10. Attach the heater hoses to the heater core and install the coolant recovery reservoir.
  11. Fill the cooling system.
  12. Install the PCM and the antenna.
  13. Install the hood, attach the hood lamp electrical connection and the washer lines. Install the cowls.
  14. Install the instrument panel.
  15. Connect the batter cables, start the vehicle and check for leaks.

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But be aware,that not all vehicles came with block heaters. you may have to have one installed.

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Unless your vehicle is diesel powered you probably don't have a coolant heater.

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Engine coolant heater cord plugin

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