Auxiliary Heater Core Replacement

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Locating Auxiliary Heater Core

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
Preliminary Procedure Remove the HVAC module - auxiliary. Refer to Auxiliary HVAC Module Removal and Installation . Disconnect any wiring connectors or harnesses form HVAC module. Remove evaporator tube retaining clips before removing lower gasket and cover.
1	HVAC Module Gasket
2	Auxiliary HVAC Module Lower Cover Bolt (Qty: 3) CAUTION: Refer to Fastener Caution . Procedure Remove any fastener clips that secure cover to module. Tighten 3 N.m (27 lb in)
3	Auxiliary HVAC Module Lower Cover
4	HVAC Module Case Screw (Qty: 10). Procedure Remove any fastener clips that secure cover to module. Tighten 3 N.m (27 lb in)
5	Auxiliary HVAC Heater Core TIP: Ensure all seals and gaskets are in place upon installation.