1999 Pontiac Montana Owner's Manual - Page 195
1999 Pontiac Montana Manual
Page 195 highlights
yellowblue Power Sliding Door Warning Light This light will come on if the power sliding door is not completely closed and the ignition is turned to RUN or START. Door Ajar Light This light will come on when the ignition is turned to RUN or START and the driver's/passenger's door or hatch is open. If you shift the transaxle out of PARK (P) while the power sliding door is open or in the process of closing, and the power sliding door override feature is disabled, a buzzer will sound. This is a warning that the power sliding door is not completely closed. PASS-KeyR III Security Light It may also come on if a sliding door is not in the fully latched position. CAUTION: If you shift the transaxle out of PARK (P) and accelerate before the power sliding door latches closed, the door may reverse to the open position. A child or others could fall out of the vehicle and be injured. Always make sure the power sliding door is closed and latched before you drive away. If you are ever driving and this light comes on and stays on, you will be able to restart your engine if you turn it off. Your PASS-Key III system, however, is not working properly and must be serviced by your dealer. Your vehicle is not protected by the PASS-Key III system at this time. 2-99