How to replace the Heater Core on GMC Sierra 1500 Classic?

The replacement process requires removing the heater/vent module before you can take out the heater core cover screws, heater core cover and finally the heater core. Before installing the heater core you must position the new piece followed by heater core cover placement according to the fastener notice then secure the heater core cover screws at 1.6 N.m (14 lb in) torque. Finally, reinstall the heater/vent module.

OEM GMC Sierra 1500 Classic Heater Core

HVAC Heater Core

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2 Heater Cores found

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GMC Sierra 1500 Classic Heater Core Part Number: 89018297
$158.42 MSRP: $325.56
You Save: $167.14 (52%)
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Product Specifications
- Other Name: Core, Heater Core; HVAC Heater Core
- Replaces: 52473326, 52473322
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 GMC Sierra 1500 Classic | Denali, Hybrid, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
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GMC Sierra 1500 Classic Heater Core Part Number: 19258989
$154.99 MSRP: $278.00
You Save: $123.01 (45%)
Product Specifications
- Other Name: Core, Heater Core
- Replaces: 88986627
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 GMC Sierra 1500 Classic | Denali, Hybrid, SL, SLE, SLT, WT | 6 Cyl 4.3 L GAS, 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS

GMC Sierra 1500 Classic Heater Core

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GMC Sierra 1500 Classic Heater Core Parts and Q&A

Heater Core
89018297
Q: How to replace the Heater Core on GMC Sierra 1500 Classic?
A:
The replacement process requires removing the heater/vent module before you can take out the heater core cover screws, heater core cover and finally the heater core. Before installing the heater core you must position the new piece followed by heater core cover placement according to the fastener notice then secure the heater core cover screws at 1.6 N.m (14 lb in) torque. Finally, reinstall the heater/vent module.