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How to Replace HVAC Control Panel 88-98 GMC K1500

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How to Replace HVAC Control Panel 88-98 GMC K1500

Created on: 2017-02-21

How to repair, install, fix, change or replace a bad or broken HVAC control panel on 96 GMC Sierra

  1. step 1 :Removing the Dash Panel
    • Tilt the steering column to the lowest position
    • Turn the key to the run position
    • Put the gear selector in the lower position
    • Pull out the dash panel
    • Disconnect the electrical connectors
  2. step 2 :Removing the HVAC Control Unit
    • Pop the control unit forward and out
    • Disconnect the wiring harnesses
  3. step 3 :Installing the HVAC Control Unit
    • Connect the wiring harnesses to the control unit
    • Press the HVAC into place
  4. step 4 :Installing the Dash Panel
    • Connect the electrical connectors
    • Press the dash into place

Tools needed for replacement

  • Ratchets & Related

    Socket Extensions


  • Screwdrivers & Related

    Flat Blade Screwdriver

  • Sockets - Metric

    7mm Socket

Installation Video
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Hi, I'm Mike from 1AAuto. We've been selling auto parts for over 30 years! We're dedicated to delivering quality auto parts, expert customer service, and fast and free shipping, all backed by our 100% satisfaction guarantee. So visit us at, your trusted source for quality auto parts.

In this video we're going to be working with our 1996 GMC Sierra K1500. We're going to show you how to remove and replace your vehicle's HVAC control panel which are all the nobs controlling your heat and AC as well as the fan speed.

If you like this video, please click subscribe. We have a ton more information on this truck, as well as many other makes and models. If you ever need parts for your car, you can follow the link down in the description over to

Here are the items you'll need for this repair: 7mm socket, ratchet, socket extension, flat blade screwdriver

Tilt your steering column to the lowest position. Turn the key to the run position. Our battery is disconnected. This will work either way. Put your foot on the brake and put the gear selector in the lowest position. You can then simply put your fingers behind the dash panel and carefully go around. Open the cup holder a little to get that clip out, and pop all the clips out. You got to scooch it forward and then pop that rear panel over the instrument cluster up, so you can move it around a little. We'll then disconnect all of the electrical connectors behind our dash.

Now this connector is a little tricky. You have this little “T” here on top of the push button. That needs to be depressed to just the right level to sneak it under. It's almost easier to use a flat blade screwdriver, pry it down and back. You can then push down and release the connector from the four-wheel drive selector buttons. Flip the panel out and release the headlight switch connector as well. You can now remove the entire dash panel from the vehicle.

The HVAC control unit simply pops forward and out. Disconnect the connectors. Simply pry up the tab on each side of this connector and then slide that out.
Reinstall the electrical connections on the heater control panel. Line it up and lock it back into place. Reconnect the electrical connectors. Don't forget to do the headlight switch on the other side. Line the dash back up and pop all of the retainers back into place. Remember to pull the cup holder out because of that lip, and you're good to go.

Thanks for watching. Visit us at for quality auto parts, fast and free shipping, and the best customer service in the industry.

Tools needed for replacement:

    Ratchets & Related

  • Socket Extensions
  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 7mm Socket

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