How to replace the auxiliary heater core on GMC Yukon?

After pulling out the auxiliary HVAC module from the vehicle one should disconnect the air temperature actuator from its position on the module. The heater core cover must be removed first and the heater core shall be withdrawn from its position in the module. The procedure starts with positioning the new heater core inside the auxiliary HVAC module while reinstalling the heater core cover and the air temperature actuator. Reinstall the auxiliary HVAC module assembly into the car as the final procedure.

How to replace the Heater Core (Delphi) on GMC Sierra 1500?

The Heater Core (Delphi) substitution process starts by uninstalling the HVAC module assembly while detaching the screws on the heater core cover. Proceed to detach the heater core cover from the HVAC module assembly after removing the heater core cowl gasket from the heater core . Remove the heater core by extracting the component from the HVAC module assembly. Begin the install process by placing the heater core inside the HVAC module assembly and then apply the heater core cowl gasket onto the heater core surface. Secure the heater core cover to the HVAC module assembly and fasten its screws into the heater core cover while tightening them to 2 N.m (18 lb in). The installation of the HVAC module assembly should be completed last.

OEM GMC Heater Core

HVAC Heater Core

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46 Heater Cores found

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GMC Heater Core Part Number: 52478848
$62.91 MSRP: $113.86
You Save: $50.95 (45%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Core Assembly, Auxiliary Heater; Core, Heater Core
Fits the following GMC Models:
- Yukon XL 1500 | 2000-2006 | Denali, SL, SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Yukon XL 2500 | 2000-2006 | SLE, SLT | 8 Cyl 6.0 L GAS, 8 Cyl 8.1 L GAS
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GMC Cooler Part Number: 19130016
$994.82 MSRP: $1868.20
You Save: $873.38 (47%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Heater, Auxiliary Heater; Fuel Cooler
Fits the following GMC Models:
- Savana 2500 | 2017-2022 | Base, LS, LT | 4 Cyl 2.8 L DIESEL
- Savana 3500 | 2017-2022 | Base, LS, LT | 4 Cyl 2.8 L DIESEL
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GMC Heater Core Part Number: 87846569
$106.15 MSRP: $192.12
You Save: $85.97 (45%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Core Assembly-Heater; Core, Heater Core
- Replaced by: 85054169
Fits the following GMC Models:
- Hummer EV Pickup | 2022-2023 | 3X, Edition 1 | BATTERY EV (EV/BEV)
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GMC Heater Core Part Number: 84903544
$84.16 MSRP: $152.33
You Save: $68.17 (45%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Core Assembly-Heater; Core, Heater Core
Fits the following GMC Models:
- Canyon | 2023 | AT4, AT4X, Denali, Elevation | 4 Cyl 2.7 L GAS
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GMC Heater Core Part Number: 88892978
$49.20 MSRP: $92.39
You Save: $43.19 (47%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Core, Heater Core; Auxiliary Heater Core
Fits the following GMC Models:
- Envoy | 2002-2005 | Denali, SLE, SLT | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS
- Envoy XL | 2002-2005 | Denali, SLE, SLT | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS
- Envoy XUV | 2004-2005 | SLE, SLT | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS
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GMC Heater Core Part Number: 84152912
$146.95 MSRP: $275.96
You Save: $129.01 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Core Assembly-Heater; Core, Heater Core
Fits the following GMC Models:
- Terrain | 2018-2021 | Denali, SL, SLE, SLT | 4 Cyl 1.5 L GAS, 4 Cyl 1.6 L DIESEL, 4 Cyl 2.0 L GAS
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GMC Heater Core Part Number: 84689022
$47.63 MSRP: $89.44
You Save: $41.81 (47%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Core Assembly-Auxiliary Heater; Core, Heater Core
Fits the following GMC Models:
- Yukon | 2021-2023 | AT4, Denali, SLE, SLT | 6 Cyl 3.0 L DIESEL, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L GAS
- Yukon XL | 2021-2023 | AT4, Denali, SLE, SLT | 6 Cyl 3.0 L DIESEL, 8 Cyl 5.3 L GAS, 8 Cyl 6.2 L GAS
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GMC Heater Core Part Number: 84206592
$80.55 MSRP: $165.55
You Save: $85.00 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Core Kit-Heater; Evaporator Core
- Replaced by: 84760093
Fits the following GMC Models:
- Acadia | 2017-2023 | AT4, Denali, SL, SLE, SLT | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS, 6 Cyl 3.6 L GAS
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GMC Heater Core Part Number: 52452918
Product Specifications
- Other Name: Core, Heater; Core, Heater Core
Fits the following GMC Models:
- C1500 | 1988-1990 | Sierra, Sierra SLE, Sierra SLX | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- C2500 | 1988-1990 | Sierra, Sierra SLE, Sierra SLX | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- C3500 | 1988-1990 | Sierra, Sierra SLE, Sierra SLX | 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 7.4 L GAS
- K1500 | 1988-1990 | Sierra, Sierra SLE, Sierra SLX | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- K2500 | 1988-1990 | Sierra, Sierra SLE, Sierra SLX | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- K3500 | 1988-1990 | Sierra, Sierra SLE, Sierra SLX | 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 7.4 L GAS
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GMC Heater Core Part Number: 52498633
Product Specifications
- Other Name: Core, Heater; HVAC Heater Core; Core, Heater Core
Fits the following GMC Models:
- Envoy | 2003-2009 | Denali, SLE, SLT | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS
- Envoy XL | 2003-2006 | Denali, SLE, SLT | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS
- Envoy XUV | 2004-2005 | SLE, SLT | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS
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GMC Heater Core Part Number: 19131975
Product Specifications
- Other Name: Core, Heater Core; Core
- Replaces: 03037852, 3037852, 52479867
Fits the following GMC Models:
- Caballero | 1984-1987 | Amarillo, Base, Diablo | 6 Cyl 3.8 L GAS, 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L DIESEL
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GMC Heater Core Part Number: 52474642
Product Specifications
- Other Name: Core, Heater; HVAC Heater Core; Core, Heater Core
Fits the following GMC Models:
- Safari | 1996-2005 | Base, SL, SLE, SLT, SLX | 6 Cyl 4.3 L GAS
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GMC Heater Core Part Number: 19131974
Product Specifications
- Other Name: Core, Heater Core; HVAC Heater Core
- Replaces: 03027265, 3027265, 52479865
Fits the following GMC Models:
- C1500 | 1984-1986 | Base, High Sierra, Sierra Classic | 6 Cyl 4.1 L GAS, 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- C1500 Suburban | 1984-1986 | Base, High Sierra, Sierra Classic | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- C2500 | 1984-1986 | Base, High Sierra, Sierra Classic | 6 Cyl 4.1 L GAS, 6 Cyl 4.3 L GAS, 6 Cyl 4.8 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 7.4 L GAS
- C2500 Suburban | 1984-1986 | Base, High Sierra, Sierra Classic | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 7.4 L GAS
- C3500 | 1984-1986 | Base, High Sierra, Sierra Classic | 6 Cyl 4.8 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 7.4 L GAS
- Jimmy | 1984-1991 | Base, High Sierra, Sierra Classic | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- K1500 | 1984-1986 | Base, High Sierra, Sierra Classic | 6 Cyl 4.1 L GAS, 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- K1500 Suburban | 1984-1986 | Base, High Sierra, Sierra Classic | 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- K2500 | 1984-1986 | Base, High Sierra, Sierra Classic | 6 Cyl 4.3 L GAS, 6 Cyl 4.8 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- K2500 Suburban | 1984-1986 | Base, High Sierra, Sierra Classic | 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
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GMC Heater Core Part Number: 52470828
Product Specifications
- Other Name: Core, Heater; HVAC Heater Core; Core, Heater Core
Fits the following GMC Models:
- Jimmy | 1995-1997 | Base, SL, SLE, SLS, SLT | 6 Cyl 4.3 L GAS
- Sonoma | 1994-1997 | SL, SLE, SLS | 4 Cyl 2.2 L GAS, 6 Cyl 4.3 L GAS
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GMC Heater Core Part Number: 19131978
Product Specifications
- Other Name: Core, Heater Core; HVAC Heater Core
- Replaces: 03027247, 52479870, 3027247
Fits the following GMC Models:
- C1500 | 1984-1986 | Base, High Sierra, Sierra Classic | 6 Cyl 4.1 L GAS, 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- C1500 Suburban | 1984-1986 | Base, High Sierra, Sierra Classic | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- C2500 | 1984-1986 | Base, High Sierra, Sierra Classic | 6 Cyl 4.1 L GAS, 6 Cyl 4.3 L GAS, 6 Cyl 4.8 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 7.4 L GAS
- C2500 Suburban | 1984-1986 | Base, High Sierra, Sierra Classic | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 7.4 L GAS
- C3500 | 1984-1986 | Base, High Sierra, Sierra Classic | 6 Cyl 4.8 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 7.4 L GAS
- Jimmy | 1984-1991 | Base, High Sierra, Sierra Classic | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- K1500 | 1984-1986 | Base, High Sierra, Sierra Classic | 6 Cyl 4.1 L GAS, 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- K1500 Suburban | 1984-1986 | Base, High Sierra, Sierra Classic | 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- K2500 | 1984-1986 | Base, High Sierra, Sierra Classic | 6 Cyl 4.3 L GAS, 6 Cyl 4.8 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- K2500 Suburban | 1984-1986 | Base, High Sierra, Sierra Classic | 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
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GMC Heater Core Part Number: 19131980
Product Specifications
- Other Name: Core, Heater Core; Core
- Replaces: 03037689, 52479872, 3037689
Fits the following GMC Models:
- Caballero | 1984-1987 | Amarillo, Base, Diablo | 6 Cyl 3.8 L GAS, 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L DIESEL
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GMC Heater Core Part Number: 52479873
Product Specifications
- Other Name: Core, Heater; Core; Core, Heater Core
- Replaces: 03037531, 3037531
Fits the following GMC Models:
- G1500 | 1984-1995 | Rally, Rally STX, Vandura | 6 Cyl 4.1 L GAS, 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
- G2500 | 1984-1995 | Rally, Rally STX, Vandura | 6 Cyl 4.1 L GAS, 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL
- G3500 | 1984-1996 | Magnavan, Rally, Rally Camper Special, Rally Custom, Rally STX, Vandura, Vandura Special | 6 Cyl 4.1 L GAS, 6 Cyl 4.3 L GAS, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
- P2500 | 1985-1989 | Base, Value Van | 6 Cyl 4.8 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- P3500 | 1985-1996 | Base, Value Van | 6 Cyl 4.3 L GAS, 6 Cyl 4.8 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
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GMC Heater Core Part Number: 19131986
Product Specifications
- Other Name: Core, Heater; HVAC Heater Core; Core; Core, Heater Core
- Replaces: 03050142, 52479878, 3050142
Fits the following GMC Models:
- Jimmy | 1992-1994 | Base, SLE, SLS, SLT | 6 Cyl 4.3 L GAS
- S15 | 1984-1990 | Base, EL, Gypsy, High Sierra, Sierra Classic | 4 Cyl 1.9 L GAS, 4 Cyl 2.0 L GAS, 4 Cyl 2.2 L DIESEL, 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 4.3 L GAS
- S15 Jimmy | 1984-1991 | Base, Gypsy, High Sierra, Sierra Classic, SLE, SLS, SLT, Timberline | 4 Cyl 1.9 L GAS, 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 4.3 L GAS
- Sonoma | 1991-1994 | Base, GT, SL, SLE, SLS | 4 Cyl 2.2 L GAS, 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 4.3 L GAS
- Syclone | 1991 | Base | 6 Cyl 4.3 L GAS
- Typhoon | 1992-1993 | Base | 6 Cyl 4.3 L GAS
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GMC Heater Core Part Number: 19131990
Product Specifications
- Other Name: Core, Heater Core; HVAC Heater Core; Core
- Replaces: 52479883, 03049486, 3049486
Fits the following GMC Models:
- Jimmy | 1992-1994 | Base, SLE, SLS, SLT | 6 Cyl 4.3 L GAS
- S15 | 1984-1990 | Base, EL, Gypsy, High Sierra, Sierra Classic | 4 Cyl 1.9 L GAS, 4 Cyl 2.0 L GAS, 4 Cyl 2.2 L DIESEL, 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 4.3 L GAS
- S15 Jimmy | 1984-1991 | Base, Gypsy, High Sierra, Sierra Classic, SLE, SLS, SLT, Timberline | 4 Cyl 1.9 L GAS, 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 4.3 L GAS
- Sonoma | 1991-1994 | Base, GT, SL, SLE, SLS | 4 Cyl 2.2 L GAS, 4 Cyl 2.5 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 4.3 L GAS
- Syclone | 1991 | Base | 6 Cyl 4.3 L GAS
- Typhoon | 1992-1993 | Base | 6 Cyl 4.3 L GAS
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GMC Heater Core Part Number: 19131976
Product Specifications
- Other Name: Core, Heater; Core; Core, Heater Core
- Replaces: 03037515, 52479868, 3037515
Fits the following GMC Models:
- G1500 | 1984-1995 | Rally, Rally STX, Vandura | 6 Cyl 4.1 L GAS, 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
- G2500 | 1984-1995 | Rally, Rally STX, Vandura | 6 Cyl 4.1 L GAS, 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL
- G3500 | 1984-1996 | Magnavan, Rally, Rally Camper Special, Rally Custom, Rally STX, Vandura, Vandura Special | 6 Cyl 4.1 L GAS, 6 Cyl 4.3 L GAS, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
- P2500 | 1985-1989 | Base, Value Van | 6 Cyl 4.8 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL
- P3500 | 1985-1996 | Base, Value Van | 6 Cyl 4.3 L GAS, 6 Cyl 4.8 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL, 8 Cyl 7.4 L GAS
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GMC Heater Core

Choose OEM Heater Core, you're making the optimal decision for superior quality and perfect performance. You can feel confident because each component goes through stringent quality checks. Every part is carefully built to comply with GMC's factory specifications. You'll enjoy a smooth, worry-free installation that fits just right. At ChevyPartsDeal.com, you'll find it easy to get top-quality OEM GMC Heater Core. You can shop at highly competitive prices and protect your budget. All our genuine GMC parts include a dependable manufacturer's warranty. You'll also appreciate our straightforward return policy and swift delivery services for extra convenience.

GMC Heater Core Parts and Q&A

Heater Core
89018297
Q: How to replace the auxiliary heater core on GMC Yukon?
A:
After pulling out the auxiliary HVAC module from the vehicle one should disconnect the air temperature actuator from its position on the module. The heater core cover must be removed first and the heater core shall be withdrawn from its position in the module. The procedure starts with positioning the new heater core inside the auxiliary HVAC module while reinstalling the heater core cover and the air temperature actuator. Reinstall the auxiliary HVAC module assembly into the car as the final procedure.
Heater Core
19258989
Q: How to replace the Heater Core (Delphi) on GMC Sierra 1500?
A:
The Heater Core (Delphi) substitution process starts by uninstalling the HVAC module assembly while detaching the screws on the heater core cover. Proceed to detach the heater core cover from the HVAC module assembly after removing the heater core cowl gasket from the heater core . Remove the heater core by extracting the component from the HVAC module assembly. Begin the install process by placing the heater core inside the HVAC module assembly and then apply the heater core cowl gasket onto the heater core surface. Secure the heater core cover to the HVAC module assembly and fasten its screws into the heater core cover while tightening them to 2 N.m (18 lb in). The installation of the HVAC module assembly should be completed last.