{"id":9293,"date":"2026-05-15T11:23:34","date_gmt":"2026-05-15T15:23:34","guid":{"rendered":"https:\/\/gm-techlinkfrench.com\/?p=9293"},"modified":"2026-06-15T11:25:42","modified_gmt":"2026-06-15T15:25:42","slug":"prise-de-force-pto-defectueuse-sur-les-camions-silverado-de-poids-moyen","status":"publish","type":"post","link":"https:\/\/gm-techlinkfrench.com\/?p=9293","title":{"rendered":"Prise de force (PTO) d\u00e9fectueuse sur les camions Silverado de poids moyen"},"content":{"rendered":"<p>Certains camions Silverado 4500HD\/5500HD\/6500HD des ann\u00e9es 2019 \u00e0 2023 peuvent pr\u00e9senter un dysfonctionnement intermittent : la prise de force (PTO) disponible ne fonctionne pas et le code d&#8217;erreur (DTC) P251A (circuit du commutateur d&#8217;activation de la PTO) s&#8217;affiche dans le module de commande de la PTO.<\/p>\n<p>La prise de force (PTO) est une source d&#8217;alimentation auxiliaire int\u00e9gr\u00e9e. Le syst\u00e8me de prise de force (PTO) permet de r\u00e9gler le r\u00e9gime moteur \u00e0 des valeurs sup\u00e9rieures au r\u00e9gime au ralenti de base normal, d&#8217;enclencher le relais de charge de la prise de force, ainsi que de d\u00e9marrer et d&#8217;arr\u00eater le moteur \u00e0 distance.<\/p>\n<p>Le fonctionnement intermittent de la prise de force (PTO) peut \u00eatre d\u00fb \u00e0 un probl\u00e8me de mise \u00e0 la terre du v\u00e9hicule. Avant de remplacer le contacteur de prise de force (PTO), v\u00e9rifier et nettoyer les points de masse du v\u00e9hicule.<\/p>\n<p><strong>G120<\/strong> (Mise \u00e0 la terre de la prise de force (PTO) principale, sur le c\u00f4t\u00e9 gauche du moteur) \u2013 V\u00e9rifier la longueur du boulon de mise \u00e0 la terre et s&#8217;assurer que la force de serrage de l&#8217;\u0153illet de mise \u00e0 la terre est ad\u00e9quate. V\u00e9rifier la pr\u00e9sence de peinture anticorrosion rouge entre le bloc et l&#8217;\u0153illet (Fig. 18).<\/p>\n<p style=\"text-align: center;\">\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-9296\" src=\"https:\/\/gm-techlinkfrench.com\/wp-content\/uploads\/2026\/06\/F18-PTO-2.png\" alt=\"\" width=\"740\" height=\"480\" srcset=\"https:\/\/gm-techlinkfrench.com\/wp-content\/uploads\/2026\/06\/F18-PTO-2.png 740w, https:\/\/gm-techlinkfrench.com\/wp-content\/uploads\/2026\/06\/F18-PTO-2-300x195.png 300w, https:\/\/gm-techlinkfrench.com\/wp-content\/uploads\/2026\/06\/F18-PTO-2-200x130.png 200w\" sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><\/p>\n<p style=\"text-align: center;\"><strong>Fig. 18<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><strong>G340<\/strong> (Mise \u00e0 la terre de la batterie principale sur le longeron c\u00f4t\u00e9 conducteur) \u2013 V\u00e9rifier qu&#8217;il n&#8217;y a pas de d\u00e9bris entre l&#8217;\u0153illet et le c\u00e2ble de mise \u00e0 la terre.<\/p>\n<p><strong>G398 et G399<\/strong> (C\u00e2ble de mise \u00e0 la terre reliant le longeron gauche au longeron droit) \u2013 V\u00e9rifier que la tension est correcte et que la force de serrage de l&#8217;\u0153illet est ad\u00e9quate.<\/p>\n<p><strong>G108 et G110<\/strong> (Masse du moteur principal au ch\u00e2ssis sur le longeron int\u00e9rieur avant droit du ch\u00e2ssis pour G108, et sur le c\u00f4t\u00e9 droit du moteur pour G110) \u2013 V\u00e9rifier que la longueur du boulon ne le fait pas talonner (arriver en but\u00e9e) et inspecter la peinture anticorrosion rouge entre l&#8217;\u0153illet et le bloc-moteur (Fig. 19).<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-9295\" src=\"https:\/\/gm-techlinkfrench.com\/wp-content\/uploads\/2026\/06\/F19-PTO-3.png\" alt=\"\" width=\"883\" height=\"625\" srcset=\"https:\/\/gm-techlinkfrench.com\/wp-content\/uploads\/2026\/06\/F19-PTO-3.png 883w, https:\/\/gm-techlinkfrench.com\/wp-content\/uploads\/2026\/06\/F19-PTO-3-300x212.png 300w, https:\/\/gm-techlinkfrench.com\/wp-content\/uploads\/2026\/06\/F19-PTO-3-768x544.png 768w, https:\/\/gm-techlinkfrench.com\/wp-content\/uploads\/2026\/06\/F19-PTO-3-780x552.png 780w\" sizes=\"auto, (max-width: 883px) 100vw, 883px\" \/><\/p>\n<p style=\"text-align: center;\"><strong>Fig. 19<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><strong>G198 et G199<\/strong> (Masse de la carrosserie et le longeron gauche) \u2013 V\u00e9rifier que la serrage de la pince \u00e0 \u0153illet est ad\u00e9quate et que de la peinture anticorrosion rouge est pr\u00e9sente entre la t\u00eate du boulon et l&#8217;\u0153illet, ainsi qu&#8217;entre le bloc-moteur et le goujon de la carrosserie (Fig. 20).<\/p>\n<p style=\"text-align: center;\">\n<p style=\"text-align: center;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-9294\" src=\"https:\/\/gm-techlinkfrench.com\/wp-content\/uploads\/2026\/06\/F20-PTO-4.png\" alt=\"\" width=\"824\" height=\"612\" srcset=\"https:\/\/gm-techlinkfrench.com\/wp-content\/uploads\/2026\/06\/F20-PTO-4.png 824w, https:\/\/gm-techlinkfrench.com\/wp-content\/uploads\/2026\/06\/F20-PTO-4-300x223.png 300w, https:\/\/gm-techlinkfrench.com\/wp-content\/uploads\/2026\/06\/F20-PTO-4-768x570.png 768w, https:\/\/gm-techlinkfrench.com\/wp-content\/uploads\/2026\/06\/F20-PTO-4-123x92.png 123w, https:\/\/gm-techlinkfrench.com\/wp-content\/uploads\/2026\/06\/F20-PTO-4-100x75.png 100w, https:\/\/gm-techlinkfrench.com\/wp-content\/uploads\/2026\/06\/F20-PTO-4-780x579.png 780w\" sizes=\"auto, (max-width: 824px) 100vw, 824px\" \/><\/p>\n<p style=\"text-align: center;\"><strong>Fig. 20<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>Se reporter au document PIP6108 pour de plus amples renseignements.<\/p>\n<p>&nbsp;<\/p>\n<p><em>&#8211; Merci \u00e0 Bill Alley<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Certains camions Silverado 4500HD\/5500HD\/6500HD des ann\u00e9es 2019 \u00e0 2023 peuvent pr\u00e9senter un dysfonctionnement intermittent : la prise de force (PTO) disponible ne fonctionne pas et le code d&#8217;erreur (DTC) P251A [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[90],"tags":[],"class_list":["post-9293","post","type-post","status-publish","format-standard","hentry","category-2026-may"],"_links":{"self":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts\/9293","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9293"}],"version-history":[{"count":1,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts\/9293\/revisions"}],"predecessor-version":[{"id":9297,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=\/wp\/v2\/posts\/9293\/revisions\/9297"}],"wp:attachment":[{"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9293"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9293"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gm-techlinkfrench.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9293"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}