Installation Procedure

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Install the auxiliary HVAC control processor (2) to the box. (1)
Install the cover to the auxiliary HVAC control processor (2).

Fig 1: Installing Auxiliary HVAC Control Processor To Box
Courtesy of GENERAL MOTORS CORP.
Install the auxiliary HVAC control processor (2) to the bracket (3).
Install the auxiliary rear HVAC control assembly. Refer to HVAC CONTROL ASSEMBLY REPLACEMENT - REAR AUXILIARY .

Fig 2: Installing Auxiliary HVAC Control Processor To Bracket
Courtesy of GENERAL MOTORS CORP.