The heater core allows hot coolant to previous through the ventilation system and warm the air. As soon as one is clogged or damaged, the heater will certainly no longer work. Learn how to replace the heater core here.

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This article applies to the Chevrolet Silverado 1500 (1999-2006).

The heater main point is as it sounds: the love of the climate manage system in your Chevy Silverado. It is basically a mini radiator hidden deep within the engine compartment behind the dashboard, i m sorry produces heat for the climate system. The heater core has actually coolant lines which affix to it and produce the actual heat. A pan then pushes the heat through the ventilation system and into the cabin. If a heater main point gets clogged or the blend door becomes jammed, the unit will should be removed. This task is no for the pass out of heart and requires the finish removal of the dashboard, including the radio, airbags, and climate manage system. However, this article can aid you in getting the project done and also prevent the hole in your pocket from getting any type of bigger.

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Step 1 – eliminate the dashboard cover

The dashboard on her Chevy is set up piece by piece; the an initial part you will certainly be removed is the upper dashboard cover.

First things first, open the hood then disconnect the an unfavorable battery cable.Pry the waiting vents turn off of the dashboard.
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Figure 1. Remove the waiting vents.Lift and remove the next panels.
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Figure 2. Remove the side panel.Remove the 2 Phillips screws situated under the removed dashboard panels.
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Figure 3. Ease the dashboard screws.Remove the screws from behind the air vents.Push ~ above the relax tabs discovered on the top side the the air vents and remove the manage assembly.
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Figure 4. Press down the release tab to remove the dashboard handle.Remove the "A" tower panel and disconnect the tweeter wiring.
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Figure 5. Eliminate the "A" tower trim.Grab the challenge panel that the dashboard and begin to pry it in the direction of the cabin, then remove it.Loosen and also remove all of the dashboard cover 7mm bolts.
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Figure 6. Pry off dashboard cover.
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Figure 7. Ease the 7mm bolts located across the dashboard.Disconnect all the wire plugs that affix to the dashboard.Gently lift the dashboard cover up and also disconnect the ambient light sensor.Remove the dashboard cover.
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Figure 8. Pop off the upper dashboard trim.
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Figure 9. Disconnect the ambient light bulb.
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Figure 10. Eliminate the finish dashboard cover.

Step 2 – start disassembling the dashboard components

Remove the 7mm vent it is registered bolts.Remove the vent register assembly.Remove the passenger next air bag switch.Loosen and remove the steering pillar bolts.Then, eliminate the steering tower covers and steering wheel.
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Figure 11. Loosen the 7mm vent register bolts.
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Figure 12. Eliminate the passenger side airbag switch.
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figure 13. Eliminate the steering column.

Step 3 – end up removing the staying dashboard components

Pull the rear cup holder the end as much as it goes.Lift the pocket of the facility console up.Locate the 4 mounting bolts and also remove them.Remove the center console.Remove the antenna and radio.Remove the wire harness clips native the interior cabin.Remove the instrumental panel cluster.Remove the parking brake release lever.

The passenger next airbag likewise needs to it is in removed.

First disable the SRS system.Then eliminate the upper and lower 10mm airbag mounting bolts.
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Figure 14. Eliminate the upper and lower 10mm airbag mounting bolts.

Some vehicles room equipped v optional accessories consisting of the OnStar security system; express to number 15 because that its removal.

Locate the interaction interface module and also remove the 3 10mm mounting bolts.Remove the unit.
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Figure 15. Remove the OnStar interactions module.
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Figure 16. The electrical components, accessories and also trim piece all removed.
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Figure 17. This photo shows the dash carrier removed.

Step 4 – empty the climate manage system

Drain the coolant indigenous the system and also evacuate the air air conditioning system.
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Figure 18. Drain the coolant.

Step 5 – change the heater core

Unbolt the HVAC assembly.Remove the heater main point cover screws.Replace the heater core.Install the cover.Mount the assembly back onto the truck.
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Figure 19. Unbolt the HVAC assembly.
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Figure 20. Replace the heater core.

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Step 6 – Re-install everything

Once the deed is done, take your time and also re-install every one of the dashboard components. It is in wary of the screws and bolts you use to re-install the components, together some room slightly longer and also will not fit every the method in. After everything is back together, height off the coolant and also reconnect the an adverse battery cable.