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Auxiliary Heater Core Replacement (Extended Wheelbase)

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Fig 1: Auxiliary HVAC Heater Core, Cover And Bolts
GM1699939Courtesy of GENERAL MOTORS CORP.
Auxiliary Heater Core Replacement (Extended Wheelbase)

Callout Component Name

Preliminary Procedure

  1. Remove the HVAC module - auxiliary. Refer to Auxiliary HVAC Module Removal and Installation (Standard Wheelbase) , Auxiliary HVAC Module Removal and Installation (Extended Wheelbase) .
  2. Disconnect any wiring connectors or harnesses from HVAC module.
1 Auxiliary HVAC Module Lower Cover Bolt (Qty: 4)
CAUTION:

Refer to Fastener Caution .


TIP:  Remove any fastener clips that secure cover to module.
Tighten 
9 N.m (80 lb in)
2 Auxiliary HVAC Module Lower Cover
3 Auxiliary HVAC Heater Core
TIP:  Ensure all seals and gaskets are in place upon installation.
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