{"id":16934,"date":"2022-10-27T09:58:20","date_gmt":"2022-10-27T13:58:20","guid":{"rendered":"https:\/\/gm-techlink.com\/?p=16934"},"modified":"2023-01-24T08:43:25","modified_gmt":"2023-01-24T13:43:25","slug":"fluid-leak-at-the-rear-of-the-transmission","status":"publish","type":"post","link":"https:\/\/gm-techlink.com\/?p=16934","title":{"rendered":"Fluid Leak at the Rear of the Transmission"},"content":{"rendered":"

A transmission fluid leak may be seen on some 2022 Silverado, Tahoe, Suburban, Sierra, Yukon and Escalade models equipped with the 10L80 10-speed automatic transmission (RPO MHS, MHT, MQB, MQC). One or more of the rear case plugs (Fig. 7) on the transmission may be leaking.<\/p>\n

 <\/p>\n

\"\"Fig. 7<\/strong><\/p>\n

 <\/p>\n

Inspect the rear of the transmission for evidence of transmission fluid at the case plugs. To help confirm the leak source is the case plug, use a light looking from the right side of the transmission between the transmission crossmember and the transmission case.<\/p>\n

If one or both case plugs are found to be leaking, remove the transmission crossmember support and mount to gain access to the plugs. (Fig. 8, 4WD shown) Only replace a plug if it is leaking. Refer to the appropriate Service Information for the complete service procedure.<\/p>\n

 <\/p>\n

\"\"Fig. 8<\/strong><\/p>\n

 <\/p>\n

Remove and discard a leaking plug and then clean the threaded hole of any residual oil with a clean, lint-free shop towel. (Fig. 9)<\/p>\n

 <\/p>\n

\"\"Fig. 9<\/strong><\/p>\n

 <\/p>\n

TIP:<\/strong> Not all of the residual oil will be removed in the cleaning process. Do not use brake clean-type solvents to clean the threaded plug hole.<\/p>\n

Before installing a new plug, apply a small bead of ACDelco thread sealant. (Fig. 10)<\/p>\n

 <\/p>\n

\"\"Fig. 10<\/strong><\/p>\n

 <\/p>\n

Install the new plug and torque to 11 lb.-ft. Clean around the plug. (Fig. 11)<\/p>\n

Complete repairs by reinstalling the transmission crossmember and then checking the transmission fluid level. Add transmission fluid ULV if needed following the procedure in Service Information.<\/p>\n

 <\/p>\n

\"\"Fig. 11<\/strong><\/p>\n

 <\/p>\n

For additional information and part numbers, refer to Bulletin #22-NA-129.<\/p>\n

\u2013 Thanks to Tom Ellison and Mark Gordon<\/em><\/p>\n

 <\/p>\n

Updated January 24, 2023<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

A transmission fluid leak may be seen on some 2022 Silverado, Tahoe, Suburban, Sierra, Yukon and Escalade models equipped with the 10L80 10-speed automatic transmission (RPO MHS, MHT, MQB, MQC). […]<\/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":[128],"tags":[],"class_list":["post-16934","post","type-post","status-publish","format-standard","hentry","category-2022-october-b"],"_links":{"self":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/16934","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=16934"}],"version-history":[{"count":4,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/16934\/revisions"}],"predecessor-version":[{"id":17195,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/16934\/revisions\/17195"}],"wp:attachment":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=16934"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=16934"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=16934"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}