GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
2009
🢒
Envoy - 2WD
🢒
Engine
🢒
Engine Cooling
🢒 Heater Core Replacement
Removal Procedure
Remove the HVAC module assembly. Refer to
HVAC Module Assembly Replacement
.
Remove the heater core access cover screws.
Remove the heater core access cover.
Remove the heater core (2) from the HVAC module assembly (1).
Installation Procedure
Install the heater core (2) to the HVAC module assembly (1).
Install the heater core access cover.
Caution:
Refer to
Fastener Caution
in the Preface section.
Install the heater core access cover screws and tighten to
1.9 N·m (17 lb in)
.
Install the HVAC module assembly. Refer to
HVAC Module Assembly Replacement
.