campingman55,
Your '05 Vectra is basically a sister ship to our '04 Horizon. I can only assume but, I won't take for granted that you have the HWH Auto leveling, 625 system. And, if it actually is the HWH 625 system, then it can be automatic or manual.
Let's say it's the 625 system and, you want to use it the automatic way. You can do it two different, but easy ways. One with the engine running and the other, without. In either case, the system will automatically "dump" the air in the bags and then, it will deploy the jacks, bringing down the appropriate ones in the order needed for accurate leveling.
Once that's done, the system will automatically shut down and, then, and only then, do you maneuver your slides out. You see, you need a stable platform that's well supported for the slides. And on the opposite end, when picking up and getting ready to depart, you retract the slides FIRST, and then, when you're all ready to head out, you start your engine, and then turn on the HWH panel and hit "Store". The bags will begin to inflate and, the jacks will all retract at the same time and, when all the "red" blinking lights are out on that panel, thats an indication that your jacks are up and ready for travel.
And, by the way, when that system is ready for travel, it turns on the "Travel" mode light. You're ready to head out.
One more thing and it's important. If your slide and jack system IS HWH, DO NOT EXTEND THE SLIDE(S) HALF WAY AND THEN RETRACT THEM!!!!! If you're going to extend any slide, extend it ALL THE WAY, then retract it. And, if you're going to retract any slide, retract it ALL THE WAY IN, then put it back out if that's your plan. Good luck. Happy Rving.
Scott