Evaporator Core Replacement - Auxiliary

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 Auxiliary Evaporator & Components

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedure Remove the HVAC module - auxiliary. Refer to HVAC Module Replacement - Auxiliary (Suburban/XL) . Remove the thermal expansion valve (TXV) - aux. Refer to Thermal Expansion Valve Replacement - Auxiliary . Disconnect any wiring connectors or harnesses from the 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	Evaporator, HVAC Aux Tip: Ensure all seals and gaskets are in place upon installation.