1998 Chevy C/K 1500 Build: How to Replace a Bad Heater Core on Your 88–98 Chevy Truck.

1998 Chevy C/K 1500 Build: How to Replace a Bad Heater Core on Your 88–98 Chevy Truck. #obs

Welcome back to the OBS Build Series! In today’s video, I’ll show you how to replace a bad heater core on your 1988–1998 Chevy truck — including the C/K 1500, Silverado, and GMC Sierra.

If your truck has no heat, foggy windows, or coolant leaking inside the cab, it’s probably time for a new heater core. Follow along step-by-step as I show you how to get it done right in your own garage.

We’ll cover:

Common symptoms of a failing heater core

Tools and parts you’ll need

Dash removal and heater box access

Installing the new heater core

Refilling coolant and testing the system

Perfect for any OBS Chevy truck owner keeping their classic rig alive and running strong!

👇 Parts & Tools Mentioned:
Spectra Premium 94483 Vehicle HVAC Heater Core:
https://amzn.to/3VORaaP

Clamp Pliers, 6 Pack:
https://amzn.to/4pTxccR

Flexible Hose Clamp Pliers
https://amzn.to/4odbu1P

50/50 Pre-Mixed Coolant:
https://amzn.to/42uattM

Funnel Kit:
https://amzn.to/4nGPhJB


🔹 (I receive compensation on purchases made through my links.)

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🚨 DISCLAIMER: This video is for entertainment purposes only. Attempting repairs/modifications is at your own risk. Always take proper safety precautions.

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