Showing Full content and Featured image in a CPT archive page regardless of theme settings in Genesis. http://sridharkatakam.com/showing-full-content-featured-image-cpt-archive-page-regardless-theme-settings-genesis/

gistfile1.php

//* Showing Full content and Featured image in 'testimonial' CPT archive page regardless of theme settings in Genesis

add_action( 'genesis_before_loop', 'sk_full_content_testimonials_archive' );
function sk_full_content_testimonials_archive() {

	if ( is_post_type_archive( 'testimonial' ) ) {
		add_filter( 'genesis_pre_get_option_content_archive_thumbnail', 'sk_show_post_image' );
		add_filter( 'genesis_pre_get_option_content_archive', 'sk_do_full_content' );
		add_filter( 'genesis_pre_get_option_content_archive_limit', 'sk_no_content_limit' );
	}

}

// Set the content archives to full
function sk_do_full_content() {
	return 'full';
}

// Make sure the content limit isn't set
function sk_no_content_limit() {
	return '0';
}

// Show Featured image
function sk_show_post_image() {
	return '1';
}