Rattler, The Newbies intro section is not the place for Technical Questions (please note the section heading).
Your post should be in the Forum applicable to the model ie Captiva.
May I suggest you repost in the Captiva Forum and advise us whether you have a Series 1 or a Series 2 model (ie year)
There are already Topic discussions on this which you can find / read via the Forum Search function. I've done a quicklink here for starters:-
A forum community dedicated to all UK Chevrolet owners and enthusiasts. Come join the discussion about troubleshooting, maintenance, modifications, classifieds, and more! Open to all models including the Captiva, Aveo, Spark, Kalos, and Orlando.