{"id":9586,"date":"2018-03-28T16:00:26","date_gmt":"2018-03-28T20:00:26","guid":{"rendered":"https:\/\/techlink.mynetworkcontent.com\/?p=9586"},"modified":"2019-01-03T12:03:24","modified_gmt":"2019-01-03T17:03:24","slug":"leaking-evaporator-core-seal","status":"publish","type":"post","link":"https:\/\/gm-techlink.com\/?p=9586","title":{"rendered":"Leaking Evaporator Core Seal"},"content":{"rendered":"<p>Some 2016-2018 CT6 models may have decreased air flow at the instrument panel outer air vents while the vehicle is moving. The air conditioning evaporator core seal may not be sealing completely, allowing warm air to pass between the evaporator core and housing, which hits the evaporator temperature sensor and causes a false high reading. As a result, the compressor may continue to run and cause the evaporator to ice up. (Fig. 15)<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-9578\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2018\/03\/F15-cs-ice.jpg\" alt=\"\" width=\"500\" height=\"406\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/03\/F15-cs-ice.jpg 500w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/03\/F15-cs-ice-300x244.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><strong>Fig. 15<\/strong><\/p>\n<p>If this condition is found, replace the seal around the evaporator core. (Fig. 16) The repair requires the removal of the instrument panel carrier and instrument panel tie bar. Refer to Bulletin #18-NA-052 for more information.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-9579\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2018\/03\/F16-cs-core.jpg\" alt=\"\" width=\"500\" height=\"386\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/03\/F16-cs-core.jpg 500w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/03\/F16-cs-core-300x232.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><strong>Fig. 16<\/strong><\/p>\n<p>The CT6 uses an R-1234yf refrigerant system. To remove, recycle and install R-1234yf from\/to a vehicle\u2019s refrigerant system, use the GE-50300 R-1234yf Air Conditioning Refrigerant Recovery\/Recharge Cart or refrigerant\/recovery\/recharge equipment certified to meet the requirements of SAE J2843 and approved by the EPA.<\/p>\n<p>After installation of the evaporator core seal, also perform the HVAC Actuator Learn procedure in the HVAC control module. Do not operate the climate controls while the HVAC control module is calibrating.<\/p>\n<p>&nbsp;<\/p>\n<p><em>&#8211; Thanks to Blake Streling<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Some 2016-2018 CT6 models may have decreased air flow at the instrument panel outer air vents while the vehicle is moving. The air conditioning evaporator core seal may not be [&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-9586","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/9586","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=9586"}],"version-history":[{"count":1,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/9586\/revisions"}],"predecessor-version":[{"id":9587,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/9586\/revisions\/9587"}],"wp:attachment":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9586"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}