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HEATER CORE REPLACEMENT
2003 GMC Sonoma
December, 16, 2010 AT 9:44 PM
Need step by step Instructions on how to replace a heater core in 2003 GMC Sonoma
FOUND 1869 RELATED QUESTIONS
How Do You Replace A Heater Core?
Changed The Heater Core Now Car Running Hot
December, 16, 2010 AT 11:45 PM
Heater Core Replacement
Remove the heater/vent module. See: Housing Assembly HVAC Service and Repair
Remove the heater core access cover screws.
Remove the heater core access cover.
Remove the heater core from the heater/vent module.
Install the heater core to the heater/vent module.
Install the heater core access cover.
NOTE: Refer to Fastener Notice in Service Precautions. See: Service Precautions Vehicle Damage Warnings
Tighten the heater core access cover screws to 1.9 N.M (17 lb in).
Install the heater/vent module.
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