{"id":14227,"date":"2021-01-14T15:05:45","date_gmt":"2021-01-14T20:05:45","guid":{"rendered":"https:\/\/gm-techlink.com\/?p=14227"},"modified":"2021-01-14T15:05:45","modified_gmt":"2021-01-14T20:05:45","slug":"knock-sensor-inspection","status":"publish","type":"post","link":"https:\/\/gm-techlink.com\/?p=14227","title":{"rendered":"Knock Sensor Inspection"},"content":{"rendered":"<p>A wiring harness condition or loose knock sensor bolt may be found on some 2020 Camaros with the 2.0L 4-cylinder engine (RPO LTG). The Check Engine light may be illuminated along with DTC P0331 (Knock Sensor 2 Performance) set in the Engine Control Module.<\/p>\n<p>If there is a knock in the engine, inspect for a loose knock sensor #2 bolt using the appropriate size tool to measure torque. The illustration shows knock sensor #2 (Fig. 18, #1), knock sensor #1 (Fig. 18, #2), and the bolts for the knock sensors (Fig. 18, #3).<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-14215\" src=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/01\/F18-knock-1.png\" alt=\"\" width=\"740\" height=\"480\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/01\/F18-knock-1.png 740w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/01\/F18-knock-1-300x195.png 300w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/01\/F18-knock-1-85x55.png 85w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2021\/01\/F18-knock-1-200x130.png 200w\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><strong>Fig. 18<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>Apply torque to the fastener in the tightening direction until it just begins to move and record the peak torque\/breakaway torque on the repair order. (Breakaway torque spec \u2265 10 Nm).<\/p>\n<p><strong>TIP:<\/strong> Tightening the retaining bolt too much or simply dropping the knock sensor on the ground can damage it.<\/p>\n<p>Also perform the following inspections:<\/p>\n<ul>\n<li>Check for any moisture or water intrusion and\/or deposits on the knock sensor #2 terminal or wiring harness connectors.<\/li>\n<li>Check the block mating face for any thread damage (uniformity) or debris, or any other abnormality, including the knock sensor #2 bolt thread.<\/li>\n<li>Check knock sensor #2 and the block surface for any rust (red rust or white powder).<\/li>\n<\/ul>\n<p>Use air to clean any residual foreign material from both the bolt and hole threads before reinstalling the existing knock sensor.<\/p>\n<p>In addition, check for potential system issues linked to engine knock. Refer to the appropriate Service Information for possible mechanical knock\/tapping (piston, main bearing under load, valve train noise at high speed, etc.) and complete repairs as needed.<\/p>\n<p>Do not replace the knock sensor unless there is physical damage or improper performance found with the part.<\/p>\n<p>Refer to #PIP5773 for additional information.<\/p>\n<p>&nbsp;<\/p>\n<p><em>&#8211; Thanks to David Rutkowski<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A wiring harness condition or loose knock sensor bolt may be found on some 2020 Camaros with the 2.0L 4-cylinder engine (RPO LTG). The Check Engine light may be illuminated [&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-14227","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/14227","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=14227"}],"version-history":[{"count":1,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/14227\/revisions"}],"predecessor-version":[{"id":14228,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/14227\/revisions\/14228"}],"wp:attachment":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=14227"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=14227"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=14227"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}