Temperature Control Cable
- Remove right instrument panel sound insulator. Remove temperature control cable from heater housing. Move temperature control knob from full cold to full hot setting. If cable binds or pulley does not rotate freely, replace cable. Set temperature control knob to detent position halfway between full cold and full hot setting.
- If control cable pulley is offset by 5-10° toward full cold side, no adjustment is necessary. See Fig 1. If control cable pulley is offset toward full hot side, remove spring from control cable pulley. Rotate pulley 5-10° toward full cold. Install control cable pulley spring. Install temperature control cable to heater housing.
Courtesy of GENERAL MOTORS CORP.