Hi, I'm new to this forum. Only picked up my Vectra yesterday (second hand). 2003 Vectra SXi.

When using the heater today, I noticed a whirring sound mixed with a knocking type of sound, behind the glove box area, when on settings 1 and 2. When increased to the 3rd and 4th setting, the sound no longer exists.

Can ANYONE help me with this? Is this a serious issue? Does it need fixing ASAP? I know there may be answers or similar problems on this forum elsewhere, but I cannot find anything which sounds the same... please help!...

Cheers...