{"id":14367,"date":"2021-02-10T14:23:33","date_gmt":"2021-02-10T19:23:33","guid":{"rendered":"https:\/\/gm-techlink.com\/?p=14367"},"modified":"2021-02-10T14:23:33","modified_gmt":"2021-02-10T19:23:33","slug":"auxiliary-transmission-oil-cooler-eliminated","status":"publish","type":"post","link":"https:\/\/gm-techlink.com\/?p=14367","title":{"rendered":"Auxiliary Transmission Oil Cooler Eliminated"},"content":{"rendered":"<p>2021 Express and Savana models equipped with the 4.3L V6 engine (RPO LV1) or 6.6L V8 engine (RPO L8T) may have a build list that includes a V14 auxiliary transmission oil cooler, but the auxiliary cooler is not installed on the vehicle as it was on previous model years. (Fig. 19)<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-14354\" src=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F19-cooler-2.png\" alt=\"\" width=\"740\" height=\"481\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F19-cooler-2.png 740w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F19-cooler-2-300x195.png 300w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F19-cooler-2-85x55.png 85w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F19-cooler-2-200x130.png 200w\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><strong>Fig. 19<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>For the 2021 model year, engineering has validated that an external transmission oil cooler is not needed and new models will no longer have the auxiliary cooler installed. A loop of coolant tubing will be visible behind the grille. (Fig. 20) Vehicles without the auxiliary cooler are built correctly and no repairs are necessary.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-14355\" src=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F20-cooler-1.png\" alt=\"\" width=\"740\" height=\"481\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F20-cooler-1.png 740w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F20-cooler-1-300x195.png 300w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F20-cooler-1-85x55.png 85w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F20-cooler-1-200x130.png 200w\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><strong>Fig. 20<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>Elimination of the auxiliary cooler does not affect transmission performance. All durability testing on the transmission was passed without the additional cooler.<\/p>\n<p>2021 models without the auxiliary cooler should not have an external transmission oil cooler installed at the dealership or have a warranty claim submitted for the missing auxiliary cooler.<\/p>\n<p>Refer to Bulletin #21-NA-021 for additional information.<\/p>\n<p>&nbsp;<\/p>\n<p><em>&#8211; Thanks to Matt Singer<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>2021 Express and Savana models equipped with the 4.3L V6 engine (RPO LV1) or 6.6L V8 engine (RPO L8T) may have a build list that includes a V14 auxiliary transmission [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-14367","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/14367","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=14367"}],"version-history":[{"count":1,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/14367\/revisions"}],"predecessor-version":[{"id":14368,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/14367\/revisions\/14368"}],"wp:attachment":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14367"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14367"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14367"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}