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Home >> GMC >> 1998 >> Jimmy 2D Utility, 4WD, Standard >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC System - Automatic >> Operation >> A/C-Heater Control Module >> Temperature Control Knob

Temperature Control Knob

In-vehicle temperature can be set between 66°F (19°C) and 82°F (28°C) When temperature control knob is rotated left (Blue half of indicator) past 66°F (19°C) system will be in full cool operation. When temperature control knob is rotated right (Red half of indicator) past 82°F (28°C), system will be in full heat operation. See Fig 1.

Fig 1: A/C-Heater Control Module Functions
G98B03141Courtesy of GENERAL MOTORS CORP.
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