{"id":9594,"date":"2018-03-28T16:05:41","date_gmt":"2018-03-28T20:05:41","guid":{"rendered":"https:\/\/techlink.mynetworkcontent.com\/?p=9594"},"modified":"2019-01-03T12:03:24","modified_gmt":"2019-01-03T17:03:24","slug":"electrical-issues-due-to-backup-lamps","status":"publish","type":"post","link":"https:\/\/gm-techlink.com\/?p=9594","title":{"rendered":"Electrical Issues Due to Backup Lamps"},"content":{"rendered":"<p>Some 2017 Acadia (VIN N) and XT5 models may have several electrical issues, including a dead battery, an inoperative Stop\/Start system, and instrument cluster and switch backlighting illumination conditions. These conditions may be due to the wrong bulbs installed in the backup lamps. (Fig. 1)<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-9564\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2018\/03\/F01-b-acadia-R.jpg\" alt=\"\" width=\"600\" height=\"527\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/03\/F01-b-acadia-R.jpg 600w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/03\/F01-b-acadia-R-300x264.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><strong>Fig. 1<\/strong><\/p>\n<p>On 2017 models, incandescent bulbs are used in the backup lamps. (Fig. 2) In some vehicles, LED lamps may have been installed instead. The Body Control Module (BCM) evaluates the Reverse Lamp circuit to determine bulb outages by applying and monitoring a low voltage signal. Since LED lamps have different electrical properties than incandescent bulbs, the circuit does not operate as expected. The BCM is calibrated for incandescent bulbs and, as a result, may stay awake after the key is off if LED lamps are used, causing the BCM to continuously monitor the circuit, which can lead to multiple electrical conditions.<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-9565\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2018\/03\/F02-b-incandescent-bulb.jpg\" alt=\"\" width=\"600\" height=\"370\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/03\/F02-b-incandescent-bulb.jpg 600w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/03\/F02-b-incandescent-bulb-300x185.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><strong>Fig. 2<\/strong><\/p>\n<p>Check the backup lamps for the installation of the proper bulbs. If LED lamps (Fig. 3, #1) are found, they should be replaced with incandescent bulbs. (Fig. 3, #2)<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-9566\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2018\/03\/F03-b-harness.jpg\" alt=\"\" width=\"600\" height=\"456\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/03\/F03-b-harness.jpg 600w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/03\/F03-b-harness-300x228.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><strong>Fig. 3<\/strong><\/p>\n<p>On XT5 models, the backup lamp assembly is underneath the rear fascia. (Fig. 4)<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-9567\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2018\/03\/F04-b-XT5-assembly.jpg\" alt=\"\" width=\"600\" height=\"444\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/03\/F04-b-XT5-assembly.jpg 600w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/03\/F04-b-XT5-assembly-300x222.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><strong>Fig. 4<\/strong><\/p>\n<p>On Acadia models, the backup lamp is part of the rear signal lamp assembly. (Fig. 5)<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-9568\" src=\"https:\/\/techlink.mynetworkcontent.com\/wp-content\/uploads\/2018\/03\/F05-b-acadia-assembly.jpg\" alt=\"\" width=\"600\" height=\"442\" srcset=\"https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/03\/F05-b-acadia-assembly.jpg 600w, https:\/\/gm-techlink.com\/wp-content\/uploads\/2018\/03\/F05-b-acadia-assembly-300x221.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><strong>Fig. 5<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><em>&#8211; Thanks to Tom Burlingame<\/em><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Some 2017 Acadia (VIN N) and XT5 models may have several electrical issues, including a dead battery, an inoperative Stop\/Start system, and instrument cluster and switch backlighting illumination conditions. These [&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-9594","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/9594","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=9594"}],"version-history":[{"count":1,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/9594\/revisions"}],"predecessor-version":[{"id":9595,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=\/wp\/v2\/posts\/9594\/revisions\/9595"}],"wp:attachment":[{"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9594"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9594"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gm-techlink.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9594"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}