I got a letter from vauxhall on saturday explaining that a small number of people had comlained about the handbrake system on the vec/sig. They go on to explain that they have co-operated with VOSE in testing the system and have found no faults. Anyway vauxhall appreciate that there may be some misunderstanding on how to parking so they have given me a little sticker to ut on the sun visor which explains how to use the handbrake lol
I was parked up today on a hill while i was standing at the side of the car. About 4 minutes went by and i heard a creaking noise from the rear wheels(brake pad grinding on the disk). As i looked the car rolled back a fraction. A minuite went past at it did this again. Rolled back a fraction and stopped. Anyway about 3 more times brakes creaked. I thought id leave it to see what happens due to the handbrake issuse with the vectra/Sig. 10 minutes later i was running after my car down the hill lol.
My opinion is that the car was fine when i originally parked but as the pads and disks lost heat it also lost grip and then rolled away. Did a few tests and the car done the same thing. If you live near a hill give it a go. Make sure you warm the pads and disks up and park on the hill.Pull the handbrake u and get out and watch. My handbrake was'nt all the way up but it was close. It was on enought that when i left the car it didn't move.I found as the disks cooled down the pads slowly lost grip. Ill have mine sent in for a service and have the handbrake tightened i think. Not a majour problem for me becuase when i leave the car i always leave it in gear.
Give the test a go!