woocommerce_after_single_product_summary

<?php
/** WooCommerce registered the hooks like so:
add_action( 'woocommerce_after_single_product_summary', 'woocommerce_output_product_data_tabs', 10 );
add_action( 'woocommerce_after_single_product_summary', 'woocommerce_upsell_display', 15 );

// Copy the code below and ignore this comment.
*/

// So in order to sort/re-order the hooks, first, remove the default hooks.
remove_action( 'woocommerce_after_single_product_summary', 'woocommerce_output_product_data_tabs', 10 );
remove_action( 'woocommerce_after_single_product_summary', 'woocommerce_upsell_display', 15 );

// Then add them back - look at the priority values; they are now switched.
add_action( 'woocommerce_after_single_product_summary', 'woocommerce_output_product_data_tabs', 15 ); // priority = 15
add_action( 'woocommerce_after_single_product_summary', 'woocommerce_upsell_display', 10 );           // priority = 10