{"id":56426,"date":"2019-01-29T12:19:17","date_gmt":"2019-01-29T17:19:17","guid":{"rendered":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/?p=56426"},"modified":"2019-01-29T12:19:17","modified_gmt":"2019-01-29T17:19:17","slug":"transmission-will-not-go-in-gear-when-cold","status":"publish","type":"post","link":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold","title":{"rendered":"Transmission will not go in gear when cold 1991 GMC Sierra 2500 4wd"},"content":{"rendered":"<p><img decoding=\"async\" class=\"alignnone size-full wp-image-36360\" src=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2016\/08\/1990-gmc-sierra.jpg\" alt=\"1990 GMC Sierra\" width=\"600\" height=\"255\" srcset=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2016\/08\/1990-gmc-sierra.jpg 600w, https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2016\/08\/1990-gmc-sierra-300x128.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>Automatic transmission won&#8217;t go into gear from full stop when cold. If I manually shift it isn&#8217;t an issue. Not original owner. Don&#8217;t know it&#8217;s history before I owned it.<\/p>\n<hr \/>\n<p>My opinion without looking at it would be an internal issue if the fluid level is full and looks clean. If the fluid looks dirty or dark, a rebuild is in your future.<\/p>\n<ul>\n<li><a href=\"https:\/\/www.freeautomechanic.com\/transmission-troubleshooting.html\"><strong>Transmission Troubleshooting<\/strong><\/a><\/li>\n<\/ul>\n<p>Some sound opinions found on the net:<\/p>\n<h3>Transmission will not shift when cold<\/h3>\n<blockquote><p>sounds to me like when it&#8217;s cold the fluid is thicker of course and is not pumping thru as it should. Might want to at least clean the filter, maybe it&#8217;s clogged up and won&#8217;t let fluid thru until it gets warmed up or something? Source: <a title=\"View the profile of Swims350\" href=\"http:\/\/forum.73-87chevytrucks.com\/smforum\/index.php?PHPSESSID=6ac773284cbbcc33f54f2fdb5b1ee18c&amp;action=profile;u=2155\">Swims350<\/a><\/p><\/blockquote>\n<h3>Transmission will not go in gear when cold<\/h3>\n<blockquote><p>This is a classic symptom of internal hydraulic leakage inside the transmission. As a transmission gets older, the various seals inside of it that keep fluid confined in specific channels tend to become hardened and no longer pliable enough to seal tightly against the shafts, servos, and other components that they are attached to. Often, in warmer weather they may seal enough to allow the transmission to operate somewhat normally. But when colder weather comes this tends to cause them to shrink more and become less pliable because of the lower temperature. After the engine runs while and the transmission fluid warms up, the internal seals and O-rings expand slightly and become slightly more able to do their job.<\/p>\n<h4>Repairs Needed<\/h4>\n<p>The repair needed is a transmission rebuild: removing the transmission from the vehicle, disassembling it completely, and installing all new seals, O-rings, and gaskets. Of course this is pretty expensive because of the amount of labor involved&#8230;.<\/p>\n<p>As a temporary measure, what often helps is to take the vehicle in to a shop to have the transmission flushed; this involves using a machine to push all of the old worn out transmission fluid out and replace it with new fluid. Transmission fluid contains additives that help to keep seals soft and pliable, so replacing the old worn fluid often helps somewhat. Also, adding one of the various transmission stop-leak or seal conditioner products available at any auto parts store to the fluid sometimes is beneficial. These products work by softening rubber components and causing them to swell up slightly; this improves sealing ability, especially when cold. Keep in mind though that this is not a fix; it only buys some time until transmission overhaul is needed. Source: Auto Mechanic:\u00a0<a class=\"expert-name-link\" href=\"https:\/\/www.justanswer.com\/car\/expert-steve7654\/\">Steve<\/a><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Automatic transmission won&#8217;t go into gear from full stop when cold. If I manually shift it isn&#8217;t an issue. Not original owner. Don&#8217;t know it&#8217;s history before I owned it. My opinion without looking at it would be an internal issue if the fluid level is full and looks clean. If the fluid looks dirty&hellip;&nbsp;<a href=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Transmission will not go in gear when cold 1991 GMC Sierra 2500 4wd<\/span><\/a><\/p>\n","protected":false},"author":15115,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[1],"tags":[22700,22699],"class_list":["post-56426","post","type-post","status-publish","format-standard","hentry","category-auto-repair-questions","tag-transmission-will-not-go-in-gear-when-cold","tag-transmission-will-not-shift-when-cold"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.0 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Transmission will not go in gear when cold 1991 GMC Sierra 2500 4wd - FreeAutoMechanic Advice<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Transmission will not go in gear when cold 1991 GMC Sierra 2500 4wd\" \/>\n<meta property=\"og:description\" content=\"Automatic transmission won&#8217;t go into gear from full stop when cold. If I manually shift it isn&#8217;t an issue. Not original owner. Don&#8217;t know it&#8217;s history before I owned it. My opinion without looking at it would be an internal issue if the fluid level is full and looks clean. If the fluid looks dirty&hellip;&nbsp;Read More &raquo;Transmission will not go in gear when cold 1991 GMC Sierra 2500 4wd\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold\" \/>\n<meta property=\"og:site_name\" content=\"FreeAutoMechanic Advice\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/freeautomechanic\" \/>\n<meta property=\"article:published_time\" content=\"2019-01-29T17:19:17+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2016\/08\/1990-gmc-sierra.jpg\" \/>\n<meta name=\"author\" content=\"Jd Dibrell\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jd Dibrell\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Transmission will not go in gear when cold 1991 GMC Sierra 2500 4wd - FreeAutoMechanic Advice","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold","og_locale":"en_US","og_type":"article","og_title":"Transmission will not go in gear when cold 1991 GMC Sierra 2500 4wd","og_description":"Automatic transmission won&#8217;t go into gear from full stop when cold. If I manually shift it isn&#8217;t an issue. Not original owner. Don&#8217;t know it&#8217;s history before I owned it. My opinion without looking at it would be an internal issue if the fluid level is full and looks clean. If the fluid looks dirty&hellip;&nbsp;Read More &raquo;Transmission will not go in gear when cold 1991 GMC Sierra 2500 4wd","og_url":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold","og_site_name":"FreeAutoMechanic Advice","article_publisher":"https:\/\/www.facebook.com\/freeautomechanic","article_published_time":"2019-01-29T17:19:17+00:00","og_image":[{"url":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2016\/08\/1990-gmc-sierra.jpg","type":"","width":"","height":""}],"author":"Jd Dibrell","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Jd Dibrell","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold#article","isPartOf":{"@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold"},"author":{"name":"Jd Dibrell","@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/#\/schema\/person\/0c3c723f7cad2e5c843c26207bdd1bee"},"headline":"Transmission will not go in gear when cold 1991 GMC Sierra 2500 4wd","datePublished":"2019-01-29T17:19:17+00:00","mainEntityOfPage":{"@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold"},"wordCount":442,"commentCount":0,"publisher":{"@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/#organization"},"image":{"@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold#primaryimage"},"thumbnailUrl":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2016\/08\/1990-gmc-sierra.jpg","keywords":["Transmission will not go in gear when cold","Transmission will not shift when cold"],"articleSection":["Auto Repair Questions"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold","url":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold","name":"Transmission will not go in gear when cold 1991 GMC Sierra 2500 4wd - FreeAutoMechanic Advice","isPartOf":{"@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold#primaryimage"},"image":{"@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold#primaryimage"},"thumbnailUrl":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2016\/08\/1990-gmc-sierra.jpg","datePublished":"2019-01-29T17:19:17+00:00","breadcrumb":{"@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold#primaryimage","url":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2016\/08\/1990-gmc-sierra.jpg","contentUrl":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2016\/08\/1990-gmc-sierra.jpg","width":600,"height":255,"caption":"1990 GMC Sierra"},{"@type":"BreadcrumbList","@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2019\/01\/transmission-will-not-go-in-gear-when-cold#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/"},{"@type":"ListItem","position":2,"name":"Transmission will not go in gear when cold 1991 GMC Sierra 2500 4wd"}]},{"@type":"WebSite","@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/#website","url":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/","name":"FreeAutoMechanic Advice","description":"Ask a Car Mechanic Questions for Free","publisher":{"@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/#organization","name":"FreeAutoMechanic Advice","url":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/#\/schema\/logo\/image\/","url":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2020\/06\/cropped-auto_repair_questions.jpg","contentUrl":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2020\/06\/cropped-auto_repair_questions.jpg","width":250,"height":81,"caption":"FreeAutoMechanic Advice"},"image":{"@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/freeautomechanic","https:\/\/www.youtube.com\/freeautomechanic"]},{"@type":"Person","@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/#\/schema\/person\/0c3c723f7cad2e5c843c26207bdd1bee","name":"Jd Dibrell","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/litespeed\/avatar\/8af2a9a16bba35c056a669b6278efb83.jpg","url":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/litespeed\/avatar\/8af2a9a16bba35c056a669b6278efb83.jpg","contentUrl":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/litespeed\/avatar\/8af2a9a16bba35c056a669b6278efb83.jpg","caption":"Jd Dibrell"},"url":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/author\/jd-dibrell"}]}},"_links":{"self":[{"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/posts\/56426","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/users\/15115"}],"replies":[{"embeddable":true,"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/comments?post=56426"}],"version-history":[{"count":0,"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/posts\/56426\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/media?parent=56426"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/categories?post=56426"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-json\/wp\/v2\/tags?post=56426"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}