1995 Pontiac Trans Sport Owner's Manual - Page 170
1995 Pontiac Trans Sport Manual
Page 170 highlights
Rear Climate Control (Option) If you have this option, you will have a master control for the rear fan on the center instrument panel console, and a rear control next to the second row seat, on the driver's side of the vehicle. To maintain a comfortable temperature in the rear, use either rear fan control to adjust the force of air corning through the rear outlets. See "Rear Fan -- Master Control" and "Rear Fan -- Rear Control'' later in this section. The temperature of heated or cooled air directed to the rear of the vehicle cannot be adjusted with the temperature control lever. Select the desired climate control mode using the directional controls on the instrument panel (see "Directional Controls" earlier in the section). The mode you choose will regulate both the front and rear climate control systems. Select RECIRC, UPPER, BI-LEV or LOWER when outside temperatures are warm ormoderate. In the RECIRC mode, or if you press A/C when the system is in the UPPER or BI-LEV modes, cooled air will be directed to the rear of the vehcle through the overhead and third-row air conditioning outlets. If you select A/C in the LOWER mode, cooled air will be directed through the rear floor vent (see the next part called "Rear Air Vents") unless the temperature control lever is set approximately 30% from the full cold setting. Heated air will result with the temperature control lever setting above 30% from the full cold setting. Temperature adjustment of the heated air is not possible. Cooled air will again return when the temperature control lever setting is returned to approximately 25% from the full cold setting. If you do not select A/C in the UPPER or BI-LEV modes, air directed to the rear of the vehicle will be cabin temperature. Select LOWER,MIX or DEF when outside temperatures are cool. In these modes, heated air will be directed to the rear of the vehicle through the rear side window vents and the rear floor heater vent. 3-7