{"id":14363,"date":"2021-02-10T14:21:40","date_gmt":"2021-02-10T19:21:40","guid":{"rendered":"https:\/\/gm-techlink.com\/?p=14363"},"modified":"2021-02-10T14:21:40","modified_gmt":"2021-02-10T19:21:40","slug":"misfire-due-to-collapsed-lifter","status":"publish","type":"post","link":"https:\/\/gm-techlink.com\/?p=14363","title":{"rendered":"Misfire Due to Collapsed Lifter"},"content":{"rendered":"<p>Some 2019-2021 Silverado, Sierra; 2021 Tahoe, Suburban, Yukon and Escalade models equipped with the 5.3L V8 engine (RPO L84) or 6.2L V8 engine (RPO L87) may have a misfire condition with a bent pushrod that leads to a collapsed lifter or the lifter comes apart. Misfire DTCs P0300 \u2013 P0308 may be set.<\/p>\n<p>If Service Information diagnostics lead to a collapsed lifter and\/or a lifter that has come apart, it is recommended to replace the valve lifter guide and the four lifters. (Fig. 23) It is not necessary to replace the oil control solenoid valve.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-14358\" src=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F23-lift-1.png\" alt=\"\" width=\"740\" height=\"480\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F23-lift-1.png 740w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F23-lift-1-300x195.png 300w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F23-lift-1-85x55.png 85w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F23-lift-1-200x130.png 200w\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><strong>Fig. 23<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>Note the installed position of the valve lifter guide. The notched area of the lifter guide aligns with the locating tab on the engine block. (Fig. 24) Install the new valve lifter guide and the lifters as an assembly.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-14359\" src=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F24-lift-2.png\" alt=\"\" width=\"740\" height=\"479\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F24-lift-2.png 740w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F24-lift-2-300x194.png 300w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F24-lift-2-85x55.png 85w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/02\/F24-lift-2-200x130.png 200w\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><strong>Fig. 24<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>The part will be requested back by GM engineering. Be sure to mark the guide to show the location of the cylinder for inspection. Do not cover the date code.<\/p>\n<p>For more information, refer to #PIP5776.<\/p>\n<p>&nbsp;<\/p>\n<p><em>&#8211; Thanks to Richard Renshaw<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Some 2019-2021 Silverado, Sierra; 2021 Tahoe, Suburban, Yukon and Escalade models equipped with the 5.3L V8 engine (RPO L84) or 6.2L V8 engine (RPO L87) may have a misfire condition [&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-14363","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/14363","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=14363"}],"version-history":[{"count":1,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/14363\/revisions"}],"predecessor-version":[{"id":14364,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/14363\/revisions\/14364"}],"wp:attachment":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14363"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14363"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14363"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}