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How to Replace the Heater Core in a GMC Sierra Pickup?

Model: GMC Sierra MK 3 - Years: 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014
Part: Heater core

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Video tutorial

In this tutorial, you will learn how to replace the heater core in a GMC Sierra pickup, a task that requires good manual skills. First, open the hood.

Next, locate the two indicated hoses, cap them using the appropriate pliers, and disconnect them. Then, move inside the cabin, remove all the dashboard components shown, and proceed to disconnect the additional hoses located in the engine compartment.

At this point, you can remove the entire climate control module, take out the heater core, insert the replacement, and reassemble everything.


Updated on 4 November 2026 by ScegliAuto


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How to Remove the Rear Seat of a Hyundai Tucson?

To remove the rear seat of a Hyundai Tucson, follow these steps. Start by moving the front seats to their most forward position to gain space. Next, locate the release lever on the underside of the rear seat, near the floor. Press this lever down while pulling the seat upwards to unlock it from the anchor pins. Once unlocked, tilt the seat upwards and forwards to remove it from its position. Repeat this process for both sides of the rear seat. Be careful of any electrical cables or components that may be connected to the seat during removal. Once the rear seat is removed, the disassembly is complete.

Watch the video!


by ScegliAuto

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