GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Chevy C Cab/Chassis HD (GMT 400) 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 Heater and Air Conditioning Control Replacement

Removal Procedure
  1. Remove the radio. Refer to Radio Replacement in Entertainment.

    2. Object Number: 651721 Size: SH
  2. Remove the HVAC control assembly (1) by firmly depressing and holding the retaining tabs and then sliding the assembly away from the dash.
  3. Disconnect the electrical connector from the HVAC control assembly.

    4. Object Number: 651719 Size: SH
  4. Disconnect the temperature cable (1) and mode cable (2) from the back of the HVAC control assembly (3).
  5. Remove the HVAC control assembly (3).

Installation Procedure
  1. Install the HVAC control assembly (3).

    2. Object Number: 651719 Size: SH
  2. Connect the temperature cable (1) to the back of the HVAC control assembly (3).
  3. Connect the mode cable (2) to the back of the HVAC control assembly (3).
  4. Connect the electrical connector to the HVAC control assembly (3).

    5. Object Number: 651721 Size: SH
  5. Install the control head (1) to the carrier until a snap is heard.
  6. Install the radio. Refer to Radio Replacement in Entertainment.