Heater Core Replacement

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Heater Core & Components

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedure Remove the HVAC module. Refer to HVAC Module Assembly Replacement . Disconnect the wiring harness retainer from the heater core cover.
1	Heater Core Cover Screw NOTE: Refer to Fastener Notice . Tighten: 1.5 N.m (14 lb in)
2	Heater Core Cover Tighten: 1.5 N.m (14 lb in)
3	Heater Core Pass Through Seal
4	Heater Core