Question about 1998 Chevrolet K1500

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1994 chevy suburban heater core removal

Is it true the dash must be removed for access to the heater core?

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Https://www.youtube.com/watch?v=p71v58OmUJQ

Posted on Jun 29, 2014

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6ya6ya
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Posted on Jan 02, 2017

Shouldibuyit
  • 44 Answers

SOURCE: replace heater core 1994 chevy g20 conversion van

Here a are the instuctions to remove it. I did not know if you have A/C or not so I included both for you.

REMOVAL & INSTALLATION
Without Air Conditioning
ALL MODELS
See Figure 1

  1. Disconnect the negative battery cable.
  2. Remove the coolant recovery bottle.
  3. Place a pan under the van and disconnect the heater intake and outlet hoses. Quickly remove and plug the hoses and support them in an upright position. Drain the coolant from the heater core into the pan.
CAUTION 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 quantity. Always drain coolant into a sealable container. Coolant should be reused unless it is contaminated or is several years old.
  1. Remove the heater distributor duct-to-case attaching screws and the duct-to-engine cover screw. Remove the duct.
  2. Remove the engine cover.
  3. Remove all the instrument panel attaching screws.
  4. Carefully lower the steering column. Raise and support the right side of the instrument panel. Refer to for further details.
  5. Remove the defroster duct-to-case attaching screws and the two screws attaching the distributor to the heater case.
  6. Disconnect the temperature door cable. Carefully fold the cable back and out of the way.
  7. Remove the three nuts from the engine compartment side of the distributor case and the screw from the passenger compartment side.
  8. Remove the heater case and core assembly.
  9. Remove the core retaining straps and remove the core.
To install:
  1. Install the core.
  2. Install the core retaining straps.
  3. Install the heater case and core assembly.
  4. Fasten the three nuts on the engine compartment side of the distributor case and the screw on the passenger compartment side.
  5. Connect the temperature door cable.
  6. Install the defroster duct-to-case attaching screws and the two screws attaching the distributor to the heater case.
  7. Install the steering column.
  8. Fasten all the instrument panel attaching screws.
  9. Install the engine cover.
  10. Install the duct. Install the heater distributor duct-to-case attaching screws and the duct-to-engine cover screw.
  11. Connect the heater intake and outlet hoses.
  12. Fill the cooling system.
  13. Install the coolant recovery bottle.
  14. Connect the negative battery cable.
1990-95 MODELS With A/C

  1. Disconnect the battery ground cable.
  2. Remove the engine cover.
  3. Remove the steering column-to-instrument panel bolts. Lower the column carefully.
  4. Remove the upper and lower instrument panel attaching screws. Remove the radio support bracket screw.
  5. Raise and support the right side of the instrument panel.
  6. Remove the lower right instrument panel bracket.
  7. Remove the vacuum actuator from the kick panel.
  8. Disconnect the temperature cable and vacuum hoses at the case. Remove the heater distributor duct from over the engine hump.
  9. Remove the two defroster duct-to-firewall attaching screws below the windshield.
  10. Under the hood, disconnect and plug the heater hoses at the firewall.
  11. Remove the three nuts and one screw (inside) holding the heater case to the firewall.
  12. Remove the case from the van. Remove the gasket for access to the screws holding the case together. Remove the temperature cable support bracket. Remove the screws and separate the case. Remove the heater core.
To install:
  1. Install the heater core.
  2. Assemble the case and fasten the screws.
  3. Install the temperature cable support bracket.
  4. Position the gasket, then install the case in the van.
  5. Fasten the three nuts and one screw (inside) holding the heater case to the firewall.
  6. Connect and plug the heater hoses at the firewall.
  7. Fasten the two defroster duct-to-firewall attaching screws below the windshield.
  8. Install the heater distributor duct.
  9. Connect the temperature cable and vacuum hoses at the case.
  10. Install the vacuum actuator at the kick panel.
  11. Install the lower right instrument panel bracket.
  12. Fasten the radio support bracket screw.
  13. Fasten the upper and lower instrument panel attaching screws.
  14. Fasten the steering column-to-instrument panel bolts.
  15. Install the engine cover.
  16. Connect the battery ground cable.
  17. Refill the cooling system as necessary.

Posted on Nov 28, 2008

  • 220 Answers

SOURCE: Removing the heater core from 2000 silverado

When I replaced the heater core on my 95 Suburban, I seem to remember having to disconnect the A/C lines on the firewall for the evaporator. There were also several nuts to remove on the engine firewall side from studs on the heater box that pass thru the firewall. It is definately a lot of work.

Good luck.

Posted on Jan 10, 2009

  • 289 Answers

SOURCE: How to replace a heater core in a 1994 chevy 1500

As with all vehicles it seems the first part that they build around is the heater core. It is under the dash above the floor housed in a black plastic sealed box. Sealed with goop. Locate that box and start removing everything around it that is peventing taking the cover off. Of course disconnect the heater hoses under the hood a thefirewall.

Warning it is never as easy as it sounds.

Posted on Nov 29, 2009

  • 1 Answer

SOURCE: how to remove heater core

You start by draining off some of the coolant. Open the radiator drain petcock on the drivers side of the radiator. You only need to drain off a half gallon or a little less. Loosen the two hose clamps leading to the heater core. You may have to twist the hoses slightly to brake them free. Now the fun starts. Remove the glove compartment by removing the eight screws at the bottom. With that out of the way you should be able to see the hearer control box. On top of this box is two cables. Remove them by gently prying off the slip clamps with a screw driver. there is also a holding clamp on both of the cables simply remove the screw on both clamps and the cables will come free. Now you remove the three bolts holding the box to the firewall. The ducts attach to the box in different ways depending on what model of suburban you have. Some snap together but most will have screws. Look closely before forcing the ducts apart! Almost done. there are three bolts under the hood on the passenger side. One is on the top of the a/c box two are below it. Only one is difficult to get to. It is located right below the blower motor housing. The easiest thing to do is to use a long extension and a universal joint with a deep socket. Some people take the inner fender off but I don’t recommend it as 16 bolts hold it in place. With all that done the box should be pulled strait out, just before it hit’s the dash, drop it down and out.

Posted on Dec 25, 2009

  • 1024 Answers

SOURCE: How do I remove the dash board of a 2003 Impala to replace heater

you don't have to remove the dash to do this job

Posted on Mar 07, 2010

Testimonial: "What a relief, now I must find out how to replace it."

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Heater core replacement 98 chevy S10 2.2L engine


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How do you change the heater core in a 2001 chevy suburban?


You must remove the dash to get to the heater box, which also needs to be removed to get to the heater core.

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Instructions for replacing the front heater core


Here is a youtube video. Chevy is pretty easy.

Apr 15, 2014 | 1994 Chevrolet Suburban

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How do u replace a heater core in a 1994 chevy g20 conversion van


If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing
  • The heater housing is usually under the dash and must be removed to gain access to the heater core.
  • Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
  • Remove the heater coolant hoses.
  • Remove the cable and/or vacuum control lines (if equipped).
  • Remove the heater core securing brackets and/or clamps.
  • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
  • To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

Dec 23, 2010 | 1994 Chevrolet G20

1 Answer

Where is the heater core located on a 1994 Lincoln Town Car?


behind glove box!
Inspect/Replace If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing
  • The heater housing is usually under the dash and must be removed to gain access to the heater core.
  • Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
f74-01.gif The heater housing is disassembled to get to the heater core.
Heater Core
  • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
  • Remove the heater coolant hoses.
  • Remove the cable and/or vacuum control lines (if equipped).
  • Remove the heater core securing brackets and/or clamps.
  • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
  • To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

Dec 02, 2010 | 1994 Lincoln Town Car

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Trying to replace heater core 1994 s10 4 cyl


GM S-Series Pick-ups and SUV's 1994-1999 Repair Guide



Heater Core - REMOVAL & INSTALLATION
1994-97 Vehicles
(see Figure 1)

44d2ba8.jpg

Fig. 1: Exploded view of a common heater core and case assembly
  1. Disconnect the negative battery cable and properly drain the engine cooling system to a level below the heater core.
  2. Disconnect the heater hoses from the core tubes near the cowl.
The instrument panel carrier is designed not only to provide access to parts through removal of the carrier components, but the carrier will also tilt downward as a complete assembly to allow access from the top. If this is desired, remove the retainer screws along the top and bottom of the carrier assembly (refer to the figure). The instrument panel will then tilt as an assembly into the cab. It is necessary to unbolt and lower the steering column from the carrier to allow for maximum movement of the instrument panel.
  1. The instrument panel must be removed or repositioned for access to the heater core case. Unbolt and either tilt the instrument panel forward or disengage the instrument panel components and remove the panel from the vehicle. In most cases, tilting the panel forward should be sufficient for the necessary access.
  2. Unfasten the heater core rear case retaining screws, then remove the rear case for access to the heater core.
  3. Loosen the retainers and remove the heater core retaining straps.
  4. Remove the heater core and seals.
To install:
  1. Install the heater core and seals, taking care not to damage the core tubes when inserting them through the cowl.
  2. Install and secure the core retaining straps.
  3. Install the rear case and secure using the screws.
  4. Reposition and secure the instrument panel and components. Tighten the cowl screws to 17 inch lbs. (1.9 Nm) and the lower instrument panel screws to 66 inch lbs. (7.5 Nm).
  5. Connect the heater hoses to the core tubes.
  6. Connect the negative battery cable, then properly refill the engine cooling system.
  7. Run the engine at normal operating temperature, then check for leaks.

Good luck (remember rated this post).

May 19, 2010 | 1994 Chevrolet S-10

2 Answers

How to replace a heater core in a 1994 chevy 1500


As with all vehicles it seems the first part that they build around is the heater core. It is under the dash above the floor housed in a black plastic sealed box. Sealed with goop. Locate that box and start removing everything around it that is peventing taking the cover off. Of course disconnect the heater hoses under the hood a thefirewall.

Warning it is never as easy as it sounds.

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Start by draining the coolant, disconnect dash board wiring harness from pcm behind kick panels, disconnect eye shaft, unbolt dashboard and remove dash. (Remember to tape steering wheel in place as it might have a clock spring). You might have to remove some trim panel on top of dash or cluster from dashboard to gain access to retaing bolts, disconnect heater hoses from heater core in engine compartment and remove heater core, reverse install.

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