GK TABS in VirtueMart product details pages

Hi! I`v tried to use GK TABS 5 module in with bikestore template, in VM product description page. I`v tried to set random positions for it and random pages, but it doesn`t showing. What Is wrong?
Thank you!

Are you sure that this product page is related with some menu item ? Probably none menu item is active when you visit product details page so the Joomla! can't generate module position properly.

Yes, I tried two different ways: 1. set menu item to external url (it provides the best look of breadcrumbs) and 2) set to menu item virtuemart product page from standard dialog of menu item settings, with the same result.
May be, incorrect module position? What module positions are working in VM product page (e.g. footer, bottom)?

On VirtueMart product page all template positions are working so probably the page is not connected with menu item. Please try to add new menu item for virtuemart products, select one of the products and then make sure that tabs is published on this position.