General information
1. The heater and air conditioner operate only when the engine is running. The operation of the heater is directly related to the temperature of the engine coolant, so operate the heater when the engine is warm enough. The amount of air passing through the heater/air conditioner can be adjusted by changing the fan speed.
2. On vehicles with air conditioning, after the start of cooling, the air coming out of the deflectors may look like fog for the first few minutes. This is due to the rapid cooling of moist air and is not a malfunction.
3. Too much cooling is harmful to health. The air temperature in the cabin should be only 5 - 6°C lower than the outside air temperature.
4. When using the air conditioner, make sure that the outside air intake in front of the windshield is not obstructed (like leaves).
5. The air conditioner must be turned on for at least 5 minutes every month, even in cold weather. This is necessary to lubricate the internal parts of the compressor and keep the air conditioner running.
6. When the air conditioner is turned on, the engine idle speed increases. Be careful when starting the car.
7. The air conditioning system has a built-in cabin filter to clean the air from dust and dirt.
Note: The procedure for changing the air filter is given in the chapter "Maintenance and general inspection and adjustment procedures".
Manual front heater control panel (Chevrolet Tahoe)
Manual front heater control panel (Chevrolet Tahoe). 1 - switch for the speed of rotation of the electric fan of the front heater, 2 - temperature regulator in the front of the passenger compartment, 3 - switch for selecting the mode of distribution of air flows.
Note: the location of the switches is shown in the figure "Front heater control panel a manually operated (Chevrolet Tahoe) ".
1. The switch [1] sets the rotational speed of the electric fan of the heater (airflow power). In total there are 5 positions for adjusting the fan speed. Under normal conditions, it is recommended to set the switch to the first or second position. Position "0" - switch off the heater fan.
2. The regulator [2] is used to set the air temperature in the passenger compartment. Turn the switch knob clockwise to increase the temperature. The heater is deactivated when the switch is turned counterclockwise as far as it will go.
Note: If the engine coolant temperature is low, the temperature of the air entering the passenger compartment does not change even when the switch is in the extreme right position.
3. Switch [3] is used to select the air distribution mode. To enable the desired mode, turn the knob to the appropriate position.
Note: the distribution of air flows in various modes is given in the subsection "Control panel for front heater and automatic air conditioning".
Control panel for front heater and manual air conditioning (Chevrolet Tahoe, Avalanche)
Control panel for front heater and manual air conditioning (Chevrolet Tahoe, Avalanche). 1 - air conditioning switch, 2 - air intake mode switch, 3 - front heater fan speed switch, 4 - front air temperature switch (from the driver's side), 5 - air temperature switch in the front of the passenger compartment (passenger side), 6 - switch for selecting the mode of distribution of air flows.
Note: the location of the switches is shown in the figure "Front heater and air conditioning control panel with manual control (Chevrolet Tahoe, Avalanche) ".
1. The switch [1] is designed to turn on the air conditioner (when the air conditioner is on, the indicator on the switch is on). When pressed again, the air conditioning mode is turned off. The heater works if the air conditioning mode is disabled.
2. The air intake mode switch [2] allows air intake either from outside the vehicle (ventilation), or from the salon (recycling). The choice of the place of air intake is carried out by pressing the switch (pregnant "recycling" the indicator on the switch will be lit).
Note: the recirculation mode, especially in cold weather, should be used for a short period of time in order not to cause excessive fogging of the windows.
3. The switch [3] sets the rotational speed of the electric fan of the heater (airflow power). In total there are 5 positions for adjusting the fan speed. Under normal conditions, it is recommended to set the switch to the first or second position. Position "0" - switch off the heater fan.
4. Switch [4] is used to set the air temperature in the cabin on the driver's side. Use switch [5] to change the interior temperature on the passenger side. Move the switch knob up to increase the temperature, down to decrease it.
Note: If the engine coolant temperature is low, the temperature of the air entering the passenger compartment does not change even when the switch is in the up position.
5. Switch [6] is used to select the air distribution mode. To enable the desired mode, turn the knob to the appropriate position.
Note: the distribution of air flows in various modes is given in the subsection "Control panel for front heater and automatic air conditioning".
Control panel for front heater and automatic air conditioning
Front heater and air conditioning control panel with automatic control. 1 - air temperature controller in the front of the cabin (from the driver's side), 2 - front heater electric fan rotation speed switch, 3 - front air conditioner and heater automatic control mode switch, 4 - air temperature regulator in the front part of the passenger compartment (passenger side), 5 - rear door glass defroster switch, 6 - windshield defroster switch, 7 - airflow direction switch, 8 - air conditioner switch, 9 - air intake mode switch (ventilation/recirculation), 10 - front heater electric fan switch.
Note: the location of the switches is shown in the figure "Control panel for front heater and automatic air conditioning".
1. Switch [8] (A/C) designed to turn on the air conditioner mode. When the air conditioner is turned on, the indicator on the switch and the indication on the LCD display are on. Deactivating the air conditioner (heater mode selection) by pressing the switch again.
2. Switch [10] (OFF) designed to disable the control system (turning off the air conditioner and heater).
3. Switch [3] (AUTO) designed for automatic control of the air conditioner and heater.
A) When the switch is pressed, the automatic operation of the air conditioner / heater is activated, in which the set air temperature on the driver's side is automatically maintained. Pressing the switch [3] again (less than 5 seconds) You can set the maintained air temperature on the passenger side with the regulator [4]. The LCD display indicates that the mode is on "AUTO". When this mode is turned on again (even after restarting the engine) all selected settings are saved (mode, temperature, flow rate, etc.).
b) Mode "AUTO" turns off when any switch is pressed except switch [3] (AUTO) and knobs [1] and [4] (TEMP).
V) To resume system operation in fully automatic mode, press the switch [3] again (AUTO).
4. Knobs [1] and [4] (TEMP).
A) Regulator [1] (TEMP) serves to set the air temperature in the passenger compartment on the driver's side. The temperature can be changed in steps of 0.5°C by turning this knob. At the same time, the selected air temperature in the car interior is displayed on the LCD display (to which it cools or heats up).
b) Changing the air temperature in the passenger compartment on the front passenger side is carried out by turning the knob [4].
5. Air intake mode switch [9] (ventilation/recirculation) allows air to be taken either from outside the vehicle or from inside. The selection of the air intake mode from the passenger compartment is carried out by pressing the switch [9], while the indicator on the switch lights up.
Attention: when the ignition is turned on, the mode will be automatically set "Ventilation" regardless of switch position (except when enabled "AUTO").
6. The windshield defroster switch [6] is used to prevent the windshield from fogging up. When pressed, the indicator on the switch turns on. In this mode, the outdoor air intake mode and the air conditioner will be automatically turned on (if the outdoor temperature is above 2°C).
7. Switch [2] sets the rotation speed of the heater electric fan (airflow power), displayed on the LCD. By pressing the switch [10] (OFF) you can turn off the fan.
8. Switch [7] is used to change the direction of the air flow supplied to the passenger compartment (MODE). The choice of the mode is carried out by sequential pressing the switch and is displayed by the corresponding icons on the LCD display.
Note: The number of directional arrows on the LCD indicates the amount of air flow coming out of the respective deflectors.
A) The air flow is directed to the head area.
b) The air flow is directed to the area of the head and the floor at the same time.
V) The air flow is directed almost completely to the floor.
G) The air flow is directed to the windshield, front door glass, the exterior mirror area and the floor.
Rear heater and/or air conditioning control panel (Chevrolet Tahoe, Cadillac Escalade)
Models with rear heater and automatic air conditioning
The operation of the rear heater and air conditioner can be controlled both from the panel located on the overhead console in the front part of the passenger compartment, and from the control panel for the audio system for rear passengers.
Operation from the control panel on the overhead console
Rear heater and air conditioning control panel on overhead console
1. Switch [1] (AUX).
A) Switch [1] (AUX) the rear heater fan is switched on and controlled.
b) To enable the mode of automatic maintenance of the set air temperature, set the switch "AUX" into position "AUTO".
V) To turn off the rear heater, turn switch [1] to position 0.
2. The regulator [2] sets the air temperature in the rear part of the passenger compartment in the range from 19 to 27°С.
3. Switch [3] changes the air flow direction mode. When the switch is set to "AUTO" the set speed will be maintained by automatically changing the direction of the air flow.
Rear passenger audio control panel
Rear heater and air conditioning control panel (rear audio control panel)
The control of the rear heater and air conditioning from the rear passenger audio control panel is only possible if the switch is (AUX) rear heater control panel on the overhead console is set to any position other than 0.
1. Rear heater control mode from the rear passenger audio control panel.
The mode is switched on by pressing the switch [4] (ON/OFF), the rear audio display will show the set temperature, airflow direction mode and rear heater fan speed. Pressing the switch [4] again will return the audio system display to the previous operating mode.
2. Briefly press the switch [5] to select the air direction mode. The selected mode is shown on the display of the rear passenger audio system. In mode "AUTO" the flow direction changes automatically depending on the selected temperature.
3. The switch [6] regulates the air temperature in the rear compartment. Press the switch from the side "▼" to reduce the temperature, from the side "▲" to increase the air temperature.
4. Pressing the switch [7] sets the speed of rotation of the electric fan of the rear heater, i.e. the power of the air flow coming out of the deflectors. In mode "AUTO" the rotation speed of the electric fan of the heater changes automatically depending on the set temperature, keeping it constant.
Chevrolet Tahoe: Models with Rear Air Conditioning The rear air conditioner can be operated either from the panel located on the overhead console in the front of the passenger compartment or from the panel located on the roof panel above the second row of seats.
Turning on the rear air conditioner and changing the power of the air flow coming out of the rear deflectors is carried out by turning the rear air conditioner fan speed switch from the position "0" to any other.
Chevrolet Tahoe: Models with rear air conditioning and manual heater.
The control of the rear heater and air conditioning is possible both from the panel located on the overhead console in the front part of the passenger compartment, and using the panel located on the roof panel above the second row of seats.
1. Turning on the rear heater/air conditioner and changing the power of the air flow coming out of the rear deflectors is done by turning the switch [1] from the position "0" to any other.
2. To change the air temperature in the rear, turn the switch [2]. To heat the air, turn the switch from the center position to the right, to cool it to the right.
Note: warm air will be supplied through the lower baffles, cold air through the ceiling baffles.
3. Switch [3] is used to select the rear air distribution mode. To enable the desired mode, turn the knob to the appropriate position.