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2003 cavalier heater box assembly removal

How do I remove the heater box assembly on a 2003 cavalier

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Here's a diagram of the assembly for you, showing how it comes apart.

Posted on Dec 29, 2008


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Why must i discharge the air conditioning refridgerant prior to removal of the heater core on a 2003 c230 mercedes 1.8l coupe.

The reason in why you must evacuate the a/c system with an a/c machine before you can remove the heater core is because the evaporator is located inside of the heater core box assembly. So before the heater core box assembly can be removed the a/c system must be evacuated then you can disconnect the a/c lines that go through the firewall to the evaporator.

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Where are the transmission solenoids located on a 2003 2.2 liter cavalier

look under the air filter box. remove the air filter box exposing the top area to the transmission. on top of the transmission, you will see the transmission solenoid. box-like with three bolts. unplug harness's. get your drip pan, remove bolts,remove gasket, (razor blade needed) clean thoroughly around transmission (engine cleaner) before replacing with the new solenoid. reverse to reinstall. good luck

Feb 15, 2015 | 2003 Chevrolet Cavalier

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Heater core replacement on a 2003 ford sport trac

the complete climate control assembly unit is required to be removed in order to remove the heater core. The climate control assembly is attached by studs & nuts which are accessible at the firewall in the engine compartment. The R134 refrigerant will need to be evacuated and the a/c lines at the expansion valve removed in order to remove the climate unit. Hope this helps. :)

Jan 21, 2014 | 2003 Ford Explorer Sport Trac

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Where is heater core located on 2001 cavalier

the only thing I would do differently is I would pinch off the heater hoses and not drain the entire cooling system. This is a nice configuration behind the glove box where the entire heater box doesn't need to be removed like on the majority of other cars.

Mar 25, 2013 | 2001 Chevrolet Cavalier

1 Answer

How do you remove the coolant fan from a 2003 cavalier

disconnect the wiring harness, and there should be two bolts on top , remove these the fan assembly sits in clips on the bottom, pull up gently and it should come out

Nov 21, 2009 | 2003 Chevrolet Cavalier

2 Answers

How do you take the dash off of a chevy cavalier

-well you start by removing the covers at each end of the panel. you will see them when you open the doors, they will just pull off.
-then you will remove the defrost grill in the top center of the dash.
-there wil be two 7 mm bolts behind the grill you will need to remove
-each end of dash will have a 7 mm bolt
-open glove box and you will find three black 7mm
-hidden up left in the glove box a square cutout you will find two silver or gold 7mm bolts that will have to be removed. (these two remove the airbag cover.
-once all the screws are removed then just pull the upper dash panel upwards to remove it (be careful of the airbag itself not to puncture it)
-with the top half of the dash off you will find 4 more 7mm bolts holding the facia part of the dash.
-remove these and pull the dash towards you around the heater and radio the dash is clipped in. be careful not to crack the panel.

-reverse procedure to put it back together.

Aug 30, 2009 | 2003 Chevrolet Cavalier

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Need to replace heater core. 91 Cavalier RS, 4 cyl., 2 litre

  1. Drain the cooling system. Refer to Draining and Filling Cooling System in Cooling System.
  2. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
  3. Remove the bolt connecting evaporator lines to evaporator.
  4. Remove the evaporator lines from the evaporator.
  5. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  6. Disconnect the heater hoses from the heater core.
  7. Lower the vehicle.
  8. Remove the evaporator case drain tube.
  9. Remove the inside and outside module attaching bolts and the accumulator mounting bracket bolt.
  10. Remove the IP carrier.
  11. Remove the floor air outlet.
  12. Disconnect the wiring harness from the HVAC module assembly
  13. Disconnect the electrical connections at the following locations:
  1. Remove the HVAC module assembly screw (2) at the top of the module from the mounting bracket. (1).
  2. Disconnect the gray source vacuum line (1). IMPORTANT: DO NOT tilt HVAC module assembly or coolant may leak out.
  3. Remove MODULE from Vehicle

Jul 28, 2009 | 1991 Chevrolet Cavalier

1 Answer


U must remove the entire dash assembly and then the heater core housing which is part of the air distribution box, time to do the job 10-15 hours.

Nov 24, 2008 | 2003 Lincoln Navigator

4 Answers

Heater core

You have to pull the dash and all the lower fascia, then remove the box that houses the Heater Core Take the clamps off the heater hoses from the engine compartment side of the firewall and disconnect the heater hoses. Disconnect the bracket that holds the heater core in place from the inside of the passenger compartment (if present.) Carefully remove the heater core and discard it. Install a new heater core reversing the above steps.

Oct 18, 2008 | 1988 Chevrolet Cavalier Z24

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