GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC Suburban - 4WD 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Control Assembly Replacement

Removal Procedure
  1. Remove the bezel---IP cluster. Refer to Instrument Panel Cluster Trim Plate Bezel Replacement .
  2. Remove the radio for access. Refer to Radio Replacement .

    3. Object Number: 257069 Size: SH
  3. Remove the heater control assembly by firmly depressing and holding the retaining tabs and then sliding the assembly away from the dash.

    4. Object Number: 482493 Size: SH
  4. Disconnect the temperature and mode cables from the back of the control head.
  5. Disconnect the electrical connection from the control head.
  6. Remove the control head.

Installation Procedure
  1. Connect the electrical connection to the control head

    2. Object Number: 482493 Size: SH
  2. Connect the temperature and mode cables to the back of the control head.

    3. Object Number: 257069 Size: SH
  3. Install the control head to the I/P carrier until a snap is heard.
  4. Install the radio. Refer to Radio Replacement
  5. Install the bezel--IP cluster. Refer to Instrument Panel Cluster Trim Plate Bezel Replacement