{"id":20129,"date":"2025-06-30T03:00:56","date_gmt":"2025-06-30T07:00:56","guid":{"rendered":"https:\/\/gm-techlink.com\/?p=20129"},"modified":"2025-08-22T11:13:07","modified_gmt":"2025-08-22T15:13:07","slug":"prelube-procedure-required-before-drive-belt-installation-during-replacement-engine","status":"publish","type":"post","link":"https:\/\/gm-techlink.com\/?p=20129","title":{"rendered":"Prelube Procedure Required Before Drive Belt Installation During Engine Replacement"},"content":{"rendered":"

If the engine for a GM model needs to be replaced with a new engine or has to be overhauled, be sure to perform the Engine Prelubing procedure as part of the installation process. Failure to complete the engine prelubing may result in premature crankshaft bearing and engine wear.<\/p>\n

TIP:<\/strong> Prelube is necessary if the engine is replaced or overhauled. If not completed, a debit to the dealership can be assessed for engine failures.<\/p>\n

Engine Prelubing before Accessory Drive Belt Installation <\/strong><\/p>\n

The Engine Removal and Installation service procedure was recently reviewed for the 5.3L engine (RPO L84), 6.2L engine (RPO L87) and 6.6L engine (RPO L8T). To help prevent bearing damage, the Engine Prelubing step has been moved before the installation of the accessory drive belts.<\/p>\n

The reason this change was made is to ensure the lower crankshaft bearings and journals have an adequate amount of oil before rotating the engine dry during drive belt installation.<\/p>\n

The revised step sequence can be found in the Engine Removal and Installation procedure, Document ID 6720543. (Fig. 1)<\/p>\n

 <\/p>\n

\"\"Fig. 1<\/strong><\/p>\n

 <\/p>\n

Engine Prelubing<\/strong><\/p>\n

The engine prelubing procedure requires using the EN-45299 Engine Preluber (Fig. 2) and EN-47971 Oil Pressure Gauge Adapter to help provide a constant and continuous flow of clean oil to properly prime the engine.<\/p>\n

 <\/p>\n

\"\"Fig. 2<\/strong><\/p>\n

 <\/p>\n

After attaching the Engine Preluber to the Oil Pressure Gauge Adapter, use the Engine Preluber to pump a minimum of 1-2\u2009quarts (1-1.9\u2009liters) of new engine oil into the engine assembly.<\/p>\n

Refer to the appropriate Service Information for complete details of the Engine Prelubing procedure.<\/p>\n

– Thanks to Bryan Salisbury<\/em><\/p>\n

\n","protected":false},"excerpt":{"rendered":"

If the engine for a GM model needs to be replaced with a new engine or has to be overhauled, be sure to perform the Engine Prelubing procedure as part […]<\/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":[207,20],"tags":[],"class_list":["post-20129","post","type-post","status-publish","format-standard","hentry","category-2025-june-c","category-tools"],"_links":{"self":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/20129","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=20129"}],"version-history":[{"count":3,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/20129\/revisions"}],"predecessor-version":[{"id":20137,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/20129\/revisions\/20137"}],"wp:attachment":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=20129"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=20129"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=20129"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}