Heater Core Replacement 2003 Sonoma

Tiny
SHEILA KUBE
  • 2003 GMC SONOMA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 90,500 MILES

Need step by step Instructions on how to replace a heater core in 2003 GMC Sonoma

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Thursday, December 16th, 2010 AT 9:44 PM

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Tiny
RASMATAZ
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Heater Core Replacement

Removal Procedure
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.
Installation Procedure

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
Tighten the heater core access cover screws to 1.9 N.M (17 lb in).
Install the heater/vent module.

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Thursday, December 16th, 2010 AT 11:45 PM

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