Auxiliary Heater Core Replacement

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of HVAC Heater Core, Cover & Bolts

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedure Remove the HVAC module - auxiliary. Refer to HVAC Module Replacement - Auxiliary (Suburban/XL) . Disconnect any wiring connectors or harnesses from HVAC module.
1	Bolts, HVAC Module Cover Aux (Qty: 4) NOTE: Refer to Fastener Notice . Tighten: 9 N.m (80 lb in)
2	Cover, Aux. Heater
3	Core, HVAC Heater Tip: Ensure all seals and gaskets are in place upon installation.