2008 Hummer H3 Owner's Manual - Page 94
2008 Hummer H3 Manual
Page 94 highlights
Retained Accessory Power (RAP) These vehicle accessories can be used for up to 20 minutes after the engine is turned off: Starting the Engine Place the transmission in the proper gear. Audio System Front Wipers Power Windows Sunroof (if equipped) Automatic Transmission Move the shift lever to PARK (P) or NEUTRAL (N). The engine will not start in any other position -- this is a safety feature. To restart when you are already moving, use NEUTRAL (N) only. Notice: Do not try to shift to PARK (P) if your vehicle is moving. If you do, you could damage the transmission. Shift to PARK (P) only when your vehicle is stopped. These features will work when the key is in ON/RUN or ACC/ACCESSORY. Once the key is turned from ON/RUN to LOCK/OFF, these features continue working for up to 20 minutes or until a door is opened. Manual Transmission The shift lever should be in neutral position and the parking brake engaged. Hold the clutch pedal down to the floor and start the engine. Your vehicle will not start if the clutch pedal is not all the way down. That is a safety feature. 2-20