How do I replace my rear windscreen wiper arm, Vauxhall Corsa?

How do I replace my rear windscreen wiper arm on my Vauxhall Corsa 04 reg, I've took off the cap and unscrewed the top screw, but it dosen't budge, do I need to unscrew something underneath?
Chris, October 2005


done
There should not be anything else to do. Should be as simple as removing the cap, nut and then the wiper arm. Having spoken to a Vauxhall trained technician, he informs me they can be quite tight. WD40 maybe? Just watch your paintwork.

Jajabusta, October 2005
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