{"id":9667,"date":"2018-04-29T11:24:49","date_gmt":"2018-04-29T15:24:49","guid":{"rendered":"https:\/\/techlink.mynetworkcontent.com\/?p=9667"},"modified":"2019-01-03T12:03:24","modified_gmt":"2019-01-03T17:03:24","slug":"repair-for-suspension-leans-to-the-left-condition","status":"publish","type":"post","link":"https:\/\/gm-techlink.com\/?p=9667","title":{"rendered":"Repair for Suspension Leans to the Left Condition"},"content":{"rendered":"<p>Some 2015-2018 Colorado and Canyon models (Fig. 3) may appear to be leaning slightly toward the left side due to the mass distribution of the vehicle.<\/p>\n<p>If this condition is noticed, installing a shim on the rear left-side of the vehicle between the rear axle and the left-side leaf spring, or installing a shim on the rear left-side of the vehicle and a new front coil spring will adjust the suspension to correct the leaning appearance.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-9656\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2018\/04\/F03-sl-2015Canyon.jpg\" alt=\"\" width=\"600\" height=\"586\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/04\/F03-sl-2015Canyon.jpg 600w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/04\/F03-sl-2015Canyon-300x293.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><strong>Fig. 3<\/strong><\/p>\n<p>To determine the amount of lean present on the vehicle, measure the wheel opening heights. Wheel opening trim heights are different from the Z (front) and D (rear) trim heights.<\/p>\n<p>Before making any measurements:<\/p>\n<ul>\n<li>Set the tire pressures to the proper pressures (according to the Tire and Loading Information label by the driver\u2019s door latch)<\/li>\n<li>Fill the fuel tank (GM does not cover fuel costs) or simulate weight of a full fuel tank<\/li>\n<li>Ensure proper weight distribution<\/li>\n<li>Park the vehicle on a level surface, such as an alignment ramp<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><strong>P and R Measurements<\/strong><\/p>\n<p>The front wheel-opening height is known as P height and the rear wheel-opening height is known as R height. (Fig. 4) These heights will indicate the most direct and repeatable measurement of a leaning condition.<\/p>\n<p>Measure from the top of the fender wheel opening through the center of the wheel to the ground.<\/p>\n<ul>\n<li>If the cross P height or cross R height (the difference between the left-side and right-side P height measurement or left-side and right-side R height measurement) is 12 mm (0.47 inches) or less, no repairs are necessary.<\/li>\n<li>If the cross P height measurement is 13 mm (0.5 inches) or more, install a shim and front coil spring.<\/li>\n<li>If the cross R height measurement is 13 mm (0.5 inches) or more, install a shim.<\/li>\n<\/ul>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-9657\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2018\/04\/F04-sl-pr-height.jpg\" alt=\"\" width=\"600\" height=\"355\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/04\/F04-sl-pr-height.jpg 600w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/04\/F04-sl-pr-height-300x178.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><strong>Fig. 4<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Shim Installment<\/strong><\/p>\n<p>The shim is installed between the left-rear leaf spring and the axle. Tension should be maintained on the leaf spring using a C-clamp on each end of the spring.<\/p>\n<p>The shim slides under the spring and the bolt, up through the hole of the spring. (Fig. 5)<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-9658\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2018\/04\/F05-sl-shim.jpg\" alt=\"\" width=\"600\" height=\"489\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/04\/F05-sl-shim.jpg 600w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/04\/F05-sl-shim-300x245.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><strong>Fig. 5<\/strong><\/p>\n<p>The shim should line up with the leaf spring. (Fig. 6) It\u2019s not necessary to remove the leaf spring or the fuel tank. Do not disassemble or remove the right-rear leaf spring.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-9659\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2018\/04\/F06-sl-shim-installed.jpg\" alt=\"\" width=\"600\" height=\"486\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/04\/F06-sl-shim-installed.jpg 600w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/04\/F06-sl-shim-installed-300x243.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><strong>Fig. 6<\/strong><\/p>\n<p>After installing the shim and, if necessary,\u00a0front coil spring,\u00a0the vehicle must be driven 3 to 5 miles (5 to 8 km) to settle the suspension.<\/p>\n<p><strong>TIP:<\/strong> Measurements of the new P and R heights must be taken after repairs are completed. Before and after measurements must be attached to the warranty claim when a front coil spring has been replaced.<\/p>\n<p>Refer to Bulletin #18-NA-108 for additional information, part numbers and front coil spring selection instructions for 2WD and 4WD vehicles equipped with a gasoline or diesel engine.<\/p>\n<p><em>&#8211; Thanks to Charles Hensley and Ed Flanagan<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Some 2015-2018 Colorado and Canyon models (Fig. 3) may appear to be leaning slightly toward the left side due to the mass distribution of the vehicle. If this condition is [&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-9667","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/9667","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=9667"}],"version-history":[{"count":3,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/9667\/revisions"}],"predecessor-version":[{"id":9689,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/9667\/revisions\/9689"}],"wp:attachment":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9667"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9667"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}