{"id":13442,"date":"2020-07-22T14:38:43","date_gmt":"2020-07-22T18:38:43","guid":{"rendered":"https:\/\/techlink.mynetworkcontent.com\/?p=13442"},"modified":"2020-08-05T13:17:40","modified_gmt":"2020-08-05T17:17:40","slug":"servicing-the-front-leveling-system","status":"publish","type":"post","link":"https:\/\/gm-techlink.com\/?p=13442","title":{"rendered":"Servicing the Front Leveling System"},"content":{"rendered":"<p class=\"western\"><span style=\"font-size: 12pt;\">There may be a Service Front Leveling System message displayed on the Driver Information Center on some 2020 Corvette models. DTC U3000 SYM49 (Control Module Internal Malfunction) also may be set. <\/span><\/p>\n<p class=\"western\"><span style=\"font-size: 12pt;\">If these conditions are found, reprogram the Front Suspension Lifting\/Lowering Hydraulic Power Pack Module with the latest calibration. Refer to K218 Front Suspension Lifting\/Lowering Hydraulic Power Pack Module: Programming and Setup in the appropriate Service Information.<\/span><\/p>\n<p class=\"western\"><span style=\"font-size: 12pt;\"><b>TIP:<\/b> If the Same Calibration\/Software Warning is noted on the Service Programming System (SPS) screen, select OK and follow the screen instructions. After a successful programming event, the Warranty Claim Code (WCC) will be displayed on the SPS Summary screen. <\/span><\/p>\n<p class=\"western\"><span style=\"font-size: 12pt;\"><b>Front Leveling System<\/b><\/span><\/p>\n<p class=\"western\"><span style=\"font-size: 12pt;\">The Front Ride Height Control (FRHC) system is designed to raise the front of the vehicle out of trim (nominal unraised position of the suspension) position during low-speed driving scenarios in order to help avoid objects on the ground and reduce the potential for damage to the front spoiler. (Fig. 14) The increased ground clearance can help to navigate speed bumps and steep driveways.<\/span><\/p>\n<p class=\"western\" style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-13419\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/07\/F14-lift-1.png\" alt=\"\" width=\"740\" height=\"480\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F14-lift-1.png 740w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F14-lift-1-300x195.png 300w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F14-lift-1-85x55.png 85w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F14-lift-1-200x130.png 200w\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><span style=\"font-size: 12pt;\"><b>Fig. 14<\/b><\/span><\/p>\n<p class=\"western\"><span style=\"font-size: 12pt;\">The FRHC system consists of front shock absorbers with built in two-position lift actuators, hoses, lines, hydraulic fluid reservoir and an electro-hydraulic control unit. In addition to providing increased ground clearance to navigate speed bumps and steep driveways, a benefit of the system is that it can increase vehicle height to clear drive-on hoists, frame contact hoists or floor jacks during a service event.<\/span><\/p>\n<p class=\"western\"><span style=\"font-size: 12pt;\">The vehicle is raised or lowered primarily by using the Lift\/Lower Select Switch on the center console. (Fig. 15)<\/span><\/p>\n<p class=\"western\" style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-13420\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2020\/07\/F15-lift-2.png\" alt=\"\" width=\"740\" height=\"481\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F15-lift-2.png 740w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F15-lift-2-300x195.png 300w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F15-lift-2-85x55.png 85w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2020\/07\/F15-lift-2-200x130.png 200w\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><span style=\"font-size: 12pt;\"><b>Fig. 15<\/b><\/span><\/p>\n<p class=\"western\"><span style=\"font-size: 12pt;\">The electrical components of the front leveling system include:<\/span><\/p>\n<ul>\n<li><span style=\"font-size: 12pt;\">S86\u2009Vehicle Stability Control System Switch<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">Front Ride Height Leveling Subsystems \u2013 K218\u2009Front Suspension Lifting\/Leveling Hydraulic Power Pack Module, Fluid Reservoir, Front Ride Height Hydraulic Control Unit (HCU), and Front Ride Height Left\/Right Front Actuator (includes displacement sensor)<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">P16\u2009Instrument Cluster<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">K20\u2009Engine Control Module<\/span><\/li>\n<li><span style=\"font-size: 12pt;\">K160\u2009Brake System Control Module<\/span><\/li>\n<\/ul>\n<p class=\"western\"><span style=\"font-size: 12pt;\">Refer to Bulletin #20-NA-140 for additional information.<\/span><\/p>\n<p class=\"western\"><span style=\"font-size: 12pt;\"><i>&#8211; Thanks to Jeff Strausser<\/i><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>There may be a Service Front Leveling System message displayed on the Driver Information Center on some 2020 Corvette models. DTC U3000 SYM49 (Control Module Internal Malfunction) also may 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-13442","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/13442","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=13442"}],"version-history":[{"count":4,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/13442\/revisions"}],"predecessor-version":[{"id":13509,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/13442\/revisions\/13509"}],"wp:attachment":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13442"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=13442"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=13442"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}