{"id":40089,"date":"2021-06-14T10:08:25","date_gmt":"2021-06-14T17:08:25","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=40089"},"modified":"2026-02-10T01:11:13","modified_gmt":"2026-02-10T09:11:13","slug":"why-doesnt-my-2004-dodge-grand-caravans-rear-heating-and-air-conditioning-work","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/why-doesnt-my-2004-dodge-grand-caravans-rear-heating-and-air-conditioning-work\/","title":{"rendered":"Why Doesn\u2019t My 2004 Dodge Grand Caravan&#8217;s Rear Heating and Air Conditioning Work?"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column40089_026614-40 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column40089_026614-40 > .kt-inside-inner-col,.kadence-column40089_026614-40 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column40089_026614-40 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column40089_026614-40 > .kt-inside-inner-col{flex-direction:column;}.kadence-column40089_026614-40 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column40089_026614-40 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column40089_026614-40{position:relative;}@media all and (max-width: 1024px){.kadence-column40089_026614-40 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column40089_026614-40 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column40089_026614-40 inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-7f5c28  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-d3a77f\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading40089_0ab4fb-55, .wp-block-kadence-advancedheading.kt-adv-heading40089_0ab4fb-55[data-kb-block=\"kb-adv-heading40089_0ab4fb-55\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading40089_0ab4fb-55 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading40089_0ab4fb-55[data-kb-block=\"kb-adv-heading40089_0ab4fb-55\"] mark.kt-highlight{font-family:Inter;font-weight:500;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading40089_0ab4fb-55 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading40089_0ab4fb-55[data-kb-block=\"kb-adv-heading40089_0ab4fb-55\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading40089_0ab4fb-55 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading40089_0ab4fb-55\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The 2004 Dodge Grand Caravan&rsquo;s heater and A\/C might simultaneously stop working because of issues with the rear blower motor, rear HVAC control unit, and rear mode door.<\/li>\n\n\n\n<li>You can usually find the dipstick on the driver&rsquo;s side of the engine compartment; it has a yellow loop on top of its handle.<\/li>\n\n\n\n<li>Put your vehicle on level ground and ensure it stays at standard operating temperature while checking the transmission fluid.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Q: I have a <a href=\"https:\/\/www.carparts.com\/vehicle\/2004\/Dodge\/Grand_Caravan\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"2004 Dodge Grand Caravan\">2004 Dodge Grand Caravan<\/a>. The rear heating and air conditioning are both inoperative. What could be the cause? <\/strong><\/h2>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Also, I would like to know how to check the transmission fluid level since the vehicle doesn&rsquo;t have a dipstick.<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">&ndash; Russ from Vineyard, Utah<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/06\/controlling-ac-unit-1024x683.jpg\" alt=\"controlling ac unit\" class=\"wp-image-40195\" style=\"width:1024px;height:683px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/06\/controlling-ac-unit-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/06\/controlling-ac-unit-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/06\/controlling-ac-unit-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/06\/controlling-ac-unit-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/06\/controlling-ac-unit-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/06\/controlling-ac-unit.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">If both the heater and A\/C are inoperative, you&rsquo;re likely dealing with an issue with the rear blower motor, the rear HVAC control unit, or possibly the rear mode door.<\/figcaption><\/figure>\n\n\n\n<p><strong>A: <\/strong>Hello, Russ. For the most part, your car&rsquo;s heating and air conditioning (A\/C) are two separate systems. The heater relies on hot engine coolant, whereas the A\/C uses refrigerant. <\/p>\n\n\n\n<p>But what the heating and A\/C both share is the <a href=\"https:\/\/www.carparts.com\/search?q=climate_control_unit&amp;vehicle%5Bmodel%5D=Grand_Caravan&amp;vehicle%5Bmake%5D=Dodge&amp;vehicle%5Byear%5D=2004\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"climate control air management system\">climate control air management system<\/a>. As such, if both the heater and A\/C are inoperative, you&rsquo;re likely dealing with an issue with the <a href=\"https:\/\/www.carparts.com\/search?q=rear_blower_motor&amp;vehicle%5Bmodel%5D=Grand_Caravan&amp;vehicle%5Bmake%5D=Dodge&amp;vehicle%5Byear%5D=2004\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"rear blower motor\">rear blower motor<\/a>, the rear <a href=\"https:\/\/www.carparts.com\/search?q=HVAC&amp;vehicle%5Bmodel%5D=Grand_Caravan&amp;vehicle%5Bmake%5D=Dodge&amp;vehicle%5Byear%5D=2004\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"HVAC\">HVAC<\/a> control unit, or possibly the rear mode door. You (or your mechanic) will need to do some troubleshooting to know for sure.&nbsp;<\/p>\n\n\n\n<div id=\"article-search-widget\">\n<div class=\"cp-search\">\n<div align=\"center\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/w_auto,dpr_auto\/carparts\/logos\/badge_wordmark\/full_color\/CP_LOGO_COLOUR_RGB\" alt=\"CarParts.com\" width=\"300\" height=\"56\">\n<\/div>\n<form id=\"cpsearchform\" name=\"cpsearchform\" action=\"https:\/\/www.carparts.com\/search\" method=\"get\" target=\"_blank\" accept-charset=\"character_set\" aria-label=\"search CarParts.com\">\n    <input type=\"text\" class=\"keyword\" name=\"q\" placeholder=\"Search for parts on CarParts.com\" value=\"\" aria-label=\"Search CarParts.com\"><input type=\"submit\" class=\"btn-search\" value=\"Search\" aria-label=\"Search\">\n<\/form>\n<\/div>\n<\/div>\n\n\n\n<p>As for checking the <a href=\"https:\/\/www.carparts.com\/automatic-transmission-fluid\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"transmission fluid\">transmission fluid<\/a>, there should be a dipstick on the left-hand side (driver&rsquo;s side) of the engine compartment. The dipstick handle has a yellow loop at the top.&nbsp;<\/p>\n\n\n\n<p>You&rsquo;ll want to check the transmission fluid with the vehicle on level ground and at normal operating temperature. The engine should be running. Step-by-step instructions for checking the fluid can be found in your <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"owner&rsquo;s manual\">owner&rsquo;s manual<\/a>.&nbsp;<\/p>\n\n\n\n<p>Also, the video below demonstrates how to check the transmission fluid on your vehicle:<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"2001 2007 Town &amp; Country Automatic Transmission Fluid How to Check Atf Doge Caravan 2006 2005 2004\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/wsoCgYl289U?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Products Mentioned in this Guide<\/h2>\n\n\n\n<div class=\"reusable-productlink\">\n\n<!-- start of editable content -->\n\n<a href=\"https:\/\/www.carparts.com\/climate-control-unit\/dodge\/grand-caravan\" target=\"_blank\" aria-label=\"dodge grand caravan climate control unit\" rel=\"noopener\">\n<img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/rb599140_1\">\n<strong>Climate Control Unit<\/strong>\n<\/a>\n\n<a href=\"https:\/\/www.carparts.com\/blower-motor\/dodge\/grand-caravan\" target=\"_blank\" aria-label=\"dodge grand caravan blower motor\" rel=\"noopener\">\n<img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/repd192004_1\">\n<strong>Blower Motor<\/strong>\n<\/a>\n\n<!-- end of editable content -->\n\n<\/div>\n\n\n\n<script type=\"application\/ld+json\">\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"QAPage\",\n    \"mainEntity\": {\n        \"@type\": \"Question\",\n        \"name\": \"Why Doesn&rsquo;t My 2004 Dodge Grand Caravan&rsquo;s Rear Heating and Air Conditioning Work?\",\n        \"text\": \"I have a 2004 Dodge Grand Caravan. The rear heating and air conditioning are both inoperative. What could be the cause? Also, I would like to know how to check the transmission fluid level since the vehicle doesn&rsquo;t have a dipstick.\",\n        \"answerCount\": 1,\n        \"upvoteCount\": 0,\n        \"dateCreated\": \"2021-06-14T17:08:25Z\",\n        \"dateModified\": \"2021-06-17T01:53:51Z\",\n        \"author\": {\n            \"@type\": \"Person\",\n            \"name\": \"Russ from Vineyard, Utah\"\n        },\n        \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Hello, Russ. For the most part, your car&rsquo;s heating and air conditioning (A\/C) are two separate systems. The heater relies on hot engine coolant, whereas the A\/C uses refrigerant. But what the heating and A\/C both share is the climate control air management system. As such, if both the heater and A\/C are inoperative, you&rsquo;re likely dealing with an issue with the rear blower motor, the rear HVAC control unit, or possibly the rear mode door. You (or your mechanic) will need to do some troubleshooting to know for sure.\",\n            \"upvoteCount\": 0,\n            \"url\": \"https:\/\/www.carparts.com\/blog\/why-doesnt-my-2004-dodge-grand-caravans-rear-heating-and-air-conditioning-work\/\",\n            \"dateCreated\": \"2021-06-14T10:08:00Z\",\n            \"author\": {\n            \"@type\": \"Person\",\n            \"name\": \"Mia Bevacqua, ASE Certified Master Automobile Technician\"\n            }\n        }\n    }\n}\n<\/script>\n\n\n\n<div class=\"shop-project\">\n\n    <h2>Shop this Project<\/h2>\n\n    <ul class=\"shop-project-list\">\n        \n        <li>\n            <div class=\"shop-project-item\">\n                <div class=\"stp-image-url\">\n                    <a href=\"https:\/\/www.carparts.com\/details\/Dodge\/Grand_Caravan\/Dorman\/Climate_Control_Unit\/2004\/RB599132.html\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/RB599132_1\" alt=\"Dorman&reg; &ndash; 2004 Dodge Grand Caravan &ndash; OE Solutions Series Climate Control Unit &ndash; Direct Fit, Sold individually\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/RB599132_1\" alt=\"Dorman&reg; &ndash; 2004 Dodge Grand Caravan &ndash; OE Solutions Series Climate Control Unit &ndash; Direct Fit, Sold individually\"><\/a>\n                <\/div>\n\n                <div class=\"stp-desc\">\n                                            <p class=\"stp-title\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/Dodge\/Grand_Caravan\/Dorman\/Climate_Control_Unit\/2004\/RB599132.html\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Dorman&reg; &ndash; 2004 Dodge Grand Caravan &ndash; OE Solutions Series Climate Control Unit &ndash; Direct Fit, Sold individually\">Dorman&reg; &ndash; 2004 Dodge Grand Caravan &ndash; OE Solutions Series Climate Control Unit &ndash; Direct Fit, Sold individually<\/a>\n                        <\/p>\n                    \n                    <div class=\"stp-stars\">\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/shop-project\/stars\/star-0.svg\" alt=\"0 Stars\">\n                    <\/div>\n\n                                            <p class=\"stp-price\">$194.99<\/p>\n                    \n                    <p><small>Price and rating may change from the time content is published.<\/small><\/p>\n\n                                            <p class=\"stp-cta\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/Dodge\/Grand_Caravan\/Dorman\/Climate_Control_Unit\/2004\/RB599132.html\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Shop Now\">Shop Now<\/a>\n                        <\/p>\n                                    <\/div>\n\n            <\/div>\n        <\/li>\n\n        \n        <li>\n            <div class=\"shop-project-item\">\n                <div class=\"stp-image-url\">\n                    <a href=\"https:\/\/www.carparts.com\/details\/Dodge\/Grand_Caravan\/Replacement\/Blower_Motor\/2004\/REPC192012.html\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/REPC192012_1\" alt=\"Replacement &ndash; 2004 Dodge Grand Caravan &ndash; Blower Motor\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/REPC192012_1\" alt=\"Replacement &ndash; 2004 Dodge Grand Caravan &ndash; Blower Motor\"><\/a>\n                <\/div>\n\n                <div class=\"stp-desc\">\n                                            <p class=\"stp-title\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/Dodge\/Grand_Caravan\/Replacement\/Blower_Motor\/2004\/REPC192012.html\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Replacement &ndash; 2004 Dodge Grand Caravan &ndash; Blower Motor\">Replacement &ndash; 2004 Dodge Grand Caravan &ndash; Blower Motor<\/a>\n                        <\/p>\n                    \n                    <div class=\"stp-stars\">\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/shop-project\/stars\/star-4.5.svg\" alt=\"4.5 Stars\">\n                    <\/div>\n\n                                            <p class=\"stp-price\">$39.99<\/p>\n                    \n                    <p><small>Price and rating may change from the time content is published.<\/small><\/p>\n\n                                            <p class=\"stp-cta\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/Dodge\/Grand_Caravan\/Replacement\/Blower_Motor\/2004\/REPC192012.html\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Shop Now\">Shop Now<\/a>\n                        <\/p>\n                                    <\/div>\n\n            <\/div>\n        <\/li>\n\n        \n        <li>\n            <div class=\"shop-project-item\">\n                <div class=\"stp-image-url\">\n                    <a href=\"https:\/\/www.carparts.com\/details\/Dodge\/Grand_Caravan\/GPD\/HVAC_Pressure_Switch\/2004\/GPD1711512.html\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/GPD1711512_1\" alt=\"\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/GPD1711512_1\" alt=\"\"><\/a>\n                <\/div>\n\n                <div class=\"stp-desc\">\n                    \n                    <div class=\"stp-stars\">\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/shop-project\/stars\/star-5.svg\" alt=\"5 Stars\">\n                    <\/div>\n\n                                            <p class=\"stp-price\">$12.99<\/p>\n                    \n                    <p><small>Price and rating may change from the time content is published.<\/small><\/p>\n\n                                            <p class=\"stp-cta\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/Dodge\/Grand_Caravan\/GPD\/HVAC_Pressure_Switch\/2004\/GPD1711512.html\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Shop Now\">Shop Now<\/a>\n                        <\/p>\n                                    <\/div>\n\n            <\/div>\n        <\/li>\n\n            <\/ul>\n<\/div>\n\n\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Q: I have a 2004 Dodge Grand Caravan. The rear heating and air conditioning are both inoperative. What could be&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/why-doesnt-my-2004-dodge-grand-caravans-rear-heating-and-air-conditioning-work\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":1643,"featured_media":39167,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[3010],"tags":[3030],"ppma_author":[2622],"class_list":{"0":"post-40089","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-ask","8":"tag-2004-dodge-grand-caravan","9":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Why Doesn\u2019t My 2004 Dodge Grand Caravan&#039;s Rear Heating and Air Conditioning Work? - In The Garage with CarParts.com<\/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.carparts.com\/blog\/why-doesnt-my-2004-dodge-grand-caravans-rear-heating-and-air-conditioning-work\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Why Doesn\u2019t My 2004 Dodge Grand Caravan&#039;s Rear Heating and Air Conditioning Work? - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Reading Time:  2 minutesQ: I have a 2004 Dodge Grand Caravan. The rear heating and air conditioning are both inoperative. What could be... 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