Replacement Parts

 

AutoZone® Rewards℠

Join Today and Earn a $20 Reward When You Make 5 Purchases of $20 or More!

Tell Us More About Your GMC Sierra. View all models

AutoZone carries hundreds of thousands of parts and accessories.

Select your Year, Make, Model and Engine to find those that fit your vehicle.

A heater core is a radiator that sits inside your GMC Sierra's dashboard and ensures your truck's cabin is warm and its windows are fog-free. When the heater core fails to do its job, it's time to replace it with a new GMC Sierra heater core from AutoZone.

Show of 1  Results
View:
  •  | Page 1 of 1 |  
  • Part Number: 394204
  • Notes: Front
    OEM #89018297 (inlet and outlet pipes attached on heater)
  •  | Page 1 of 1 |  

Sierra heater cores malfunction because of leaks and punctures. If you smell something sweet in your truck's interior and the windows fog up for no reason, you know you're dealing with a flawed heater core. Our high-quality heater core replacements for GMC Sierra restores your truck's defroster and heater, so you get a clear view of the road and a nice, warm cabin. At AutoZone, we're committed to offering you great products, knowledgeable advice and friendly service. Visit your neighborhood store and take advantage of Same Day Store Pickup (in most cases) when you place an order online.

Other Customers Also Viewed

BUY WITH CONFIDENCE

ABOUT CORE PARTS

Buy online and return core parts to the store to be refunded the price.
Core Parts Policy

Core return policy

FREE SHIPPING

On Orders $75 or Greater
and free shipping to APO, FPO, DPO addresses.
Get More Details

Free shipping policy

RETURN ANYWHERE

Buy Online, Return
Anywhere
Get More Details

${returnanywherealttext}

SAME-DAY STORE PICKUP

Save time by buying online and picking up items in store.
Learn More

Same day store pickup
Payment Methods:
 
label.common.footer.alt.autozoneLogo