gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

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Heater Core Replacement|Page 3200 > < Cooling System, A/C - Aluminum Heater Cores/Radiators|Page 3197

Sierra 1500 2WD V6-4.3L VIN X (2004)

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Heater Core: Service and Repair
Heater Core Replacement

HEATER CORE REPLACEMENT (HEAT ONLY)

REMOVAL PROCEDURE

1. Remove the heater/vent module. See: 
2. Remove the heater core cover screws.

3. Remove the heater core cover.

4. Remove the heater core.

INSTALLATION PROCEDURE

1. Install the heater core.

Heater Core Replacement|Page 3200 > < Cooling System, A/C - Aluminum Heater Cores/Radiators|Page 3197