{"id":531544,"date":"2026-07-17T13:24:58","date_gmt":"2026-07-17T17:24:58","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=531544"},"modified":"2026-07-19T12:00:26","modified_gmt":"2026-07-19T16:00:26","slug":"2004-jeep-grand-cherokee-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2004-jeep-grand-cherokee-pcm-replacement-guide\/","title":{"rendered":"2004 Jeep Grand Cherokee PCM Replacement and Programming"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2004 Jeep Grand Cherokee PCM Replacement and Programming<\/h1>\n<p class=\"hero-subtitle\">The Powertrain Control Module (PCM) in your 2004 Jeep Grand Cherokee serves as the central computer managing engine and transmission operation. When internal memory errors develop, the module may fail to process sensor data correctly. Failure can cause stalling, no-start conditions, and limp-home mode. Replacement restores proper engine and transmission coordination.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>The 2004 Jeep Grand Cherokee PCM sits on the cowl panel toward the right-rear of the engine bay.<\/li>\n<li>Code P0601 indicates internal memory corruption in the Powertrain Control Module requiring professional diagnosis.<\/li>\n<li>R&amp;R book time is 0.4 hours; relearn procedures may add additional labor depending on system response.<\/li>\n<li>Dealer reprogramming with original VIN and mileage is required unless the replacement unit arrives pre-programmed.<\/li>\n<li>Module-internal codes like P0601 typically require replacement rather than repair.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>A no-start condition or persistent driveability problems on your 2004 Jeep Grand Cherokee often trace back to the Powertrain Control Module (PCM). This computer governs fuel delivery, ignition timing, and transmission shifting based on data from dozens of sensors. When internal faults develop, the module may lose communication or default to limp-home mode, severely limiting performance. Replacing the PCM involves more than swapping a box\u2014you&#8217;ll need to address programming and relearn procedures. This guide walks through what the module does, where it lives, how replacement works, and what to expect from the repair process on your Jeep.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2004 Jeep Grand Cherokee<\/h2>\n<p>The Powertrain Control Module in your 2004 Jeep Grand Cherokee acts as the nerve center for the 4.0L engine and automatic transmission. It continuously adjusts fuel injector pulse width, spark advance, idle speed, and transmission shift points based on real-time inputs from the crankshaft position sensor, oxygen sensors, throttle position sensor, and others. Without accurate data processing, your engine runs poorly or not at all. The module also relays critical information to the transmission control system, enabling smooth gear changes. When internal circuits fail, the <a href=\"https:\/\/www.fs1inc.com\/jeep-ecu-ecm-pcm\/grand-cherokee-engine-computers.html\">replacement engine computers for the 2004 Jeep Grand Cherokee<\/a> may trigger protective shutdowns, illuminate the check engine light, or lose communication with scan tools. Your vehicle may enter limp mode, restricting speed and gear selection to prevent damage. In many cases, the only remedy is installing a properly programmed replacement module.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Where the PCM Is Located and What Replacement Involves<\/h2>\n<p>The Powertrain Control Module on your 2004 Jeep Grand Cherokee mounts on the cowl panel near the right-rear corner of the engine compartment. Access requires removing the surrounding trim and potentially the battery or fuse box to create working room. The R&amp;R book time of 0.4 hours covers removal and installation assuming straightforward access, though additional time may be needed if connectors are corroded or fasteners are seized. Disconnect the negative battery terminal before beginning work to prevent electrical shorts. After securing the new module, reconnect all electrical connectors firmly and verify harness routing avoids heat sources or moving parts. Torque specifications, if provided in the factory service manual, should be followed exactly for mounting fasteners. Once installed, the vehicle will need to recognize the new module through a relearn process.<\/p>\n<figure style=\"margin:22px auto;text-align:center;max-width:720px\"><img decoding=\"async\" style=\"max-width:100%;height:auto;border:1px solid #e2e6ec;border-radius:8px\" src=\"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2004-jeep-grand-cherokee-pcm-location-diagram.webp\" alt=\"2004 Jeep Grand Cherokee PCM location diagram\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">PCM mounting location on the 2004 Jeep Grand Cherokee.<\/figcaption><\/figure>\n<div style=\"background:#f7f9fc;border:1px solid #e2e8f2;border-radius:10px;padding:18px 24px;margin:18px 0\">\n<h3 style='margin-top:0'>How to Reach the PCM on the 2004 Jeep Grand Cherokee<\/h3>\n<ol style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\"><b>Disconnect<\/b> negative battery cable at battery.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> coolant reserve\/overflow tank.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> cover over electrical connectors.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Unplug<\/b> three 32\u0096way connectors at PCM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> three PCM bracket-to-body mounting nuts ().<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> PCM\/PCM bracket assembly from vehicle.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> 3 PCM-to-PCM bracket bolts (screws) ().<\/li>\n<\/ol>\n<p style='margin:10px 0 0 0'><em>Work with the ignition off, and treat the module as static-sensitive: avoid touching the connector pins at any point.<\/em><\/p>\n<\/div>\n<table style=\"width:100%;border-collapse:collapse;margin:18px 0;font-size:15px\">\n<tr>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Operation<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Configuration<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Book Time<\/th>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Powertrain Control Module Relearn<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.5 hr<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Powertrain Control Module R&amp;R<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.4 hr<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Engine Control Module Relearn<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.5 hr<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Engine Control Module Reset<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.3 hr<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Engine Control Module R&amp;R<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.4 hr<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Programming Requirements After Replacement<\/h2>\n<p>After installing a replacement Powertrain Control Module, the factory procedure requires using the DRBIII scan tool to program the new unit with your vehicle&#8217;s original Vehicle Identification Number and current mileage. This step ensures the module communicates correctly with the Jeep&#8217;s other control systems. If your replacement unit arrives from Flagship One already programmed with the correct VIN, the reprogramming step at the dealership is unnecessary. However, your 2004 Jeep Grand Cherokee may still need to perform its own relearn cycle to adapt to the new module&#8217;s baseline settings. Some vehicles complete this automatically once the PCM is powered up and the engine runs. Other times, additional relearn procedures using a scan tool are needed, which adds time to the overall job.<\/p>\n<p>Every <a href=\"https:\/\/www.fs1inc.com\/2004-jeep-grand-cherokee-4-0l-engine-computer-pcm-ecm-ecu-programmed-plug-play.html\">VIN-programmed replacement unit<\/a> from Flagship One arrives with these steps already completed.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>When the Powertrain Control Module begins to fail on your 2004 Jeep Grand Cherokee, several patterns commonly emerge. The engine may refuse to start entirely, or it could start and then stall unexpectedly. Persistent misfire codes (P0300 through P0306) often accompany PCM problems because the module cannot properly process crankshaft position data. You might notice the transmission refusing to shift normally or cycling between gears roughly. In some cases, the check engine light stays illuminated continuously, while in others, the light never comes on despite obvious driveability problems. Scan tool communication may be intermittent or impossible, depending on whether the fault is in the module&#8217;s processor or memory circuits. A <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\">internal memory checksum failure<\/a> stored in module memory often signals that the PCM itself requires replacement rather than pointing to an external fault.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2004 Jeep Grand Cherokee<\/h2>\n<p>Module-internal trouble codes differ from typical diagnostic codes because they originate within the Powertrain Control Module&#8217;s internal memory rather than from external sensors or circuits. These codes often indicate hardware-level failures such as processor errors, memory corruption, or watch dog timer issues. On the 2004 Jeep Grand Cherokee, one such code has been documented. When these codes appear, standard OBD-II scanners may or may not retrieve them depending on the tool&#8217;s capability and the specific fault type. Professional-grade diagnostic equipment is typically required to access and interpret module-internal codes accurately.<\/p>\n<table style=\"width:100%;border-collapse:collapse;margin:18px 0;font-size:15px\">\n<tr>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Code<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Meaning<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Full Guide<\/th>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0601<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Internal memory checksum error<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\" style=\"color:#0563C1\"><b><u>Full P0601 guide &rarr;<\/u><\/b><\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Factory Service Bulletins Worth Knowing<\/h2>\n<p>Factory service documentation addresses Powertrain Control Module concerns for this vehicle. Service Bulletin 08-030-06 Rev. A specifically covers PCM Initialization procedures for the 2004 Jeep Grand Cherokee. This bulletin provides dealers and technicians with the approved method for preparing replacement modules for installation. The procedure involves using the DRBIII scan tool to enter the vehicle identification number and odometer reading into the replacement unit. Proper initialization ensures the new module will communicate with the vehicle&#8217;s other control modules and accept data from installed sensors. Technicians following this bulletin can confirm whether the replacement PCM has been properly configured before completing the repair.<\/p>\n<table style=\"width:100%;border-collapse:collapse;margin:18px 0;font-size:15px\">\n<tr>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Bulletin<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Subject<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">What It Addresses<\/th>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><b>08-030-06 Rev. A<\/b><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">08-030-06 Rev. A Powertrain Control Module Initialization<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">&mdash;<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Protecting the PCM in Your 2004 Jeep Grand Cherokee<\/h2>\n<ul style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\">Maintain your vehicle&#8217;s charging system with regular battery and alternator testing to prevent voltage fluctuations that stress the PCM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Keep battery terminals clean and ground connections tight to ensure stable electrical supply to sensitive control modules.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid jump-starting incorrectly\u2014always verify polarity and use proper booster connections to prevent voltage spikes.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address check engine lights promptly with professional diagnostics rather than ignoring codes that may indicate developing module issues.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Protect electrical connectors from moisture intrusion and inspect them periodically for corrosion or seal damage.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">When performing other repairs, avoid placing tools near the PCM area where accidental damage to wiring or the module itself could occur.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>How do I know if my 2004 Jeep Grand Cherokee PCM is actually bad versus having a wiring issue?<\/h3>\n<p>Professional diagnosis is essential before replacing the module. A technician will test for power and ground at the PCM connectors, verify communication with a factory-level scan tool, and rule out sensor or wiring faults. If the module fails internal self-tests or loses communication entirely, replacement is warranted.<\/p>\n<h3>Will my 2004 Jeep Grand Cherokee run after I replace the PCM if it&#8217;s not reprogrammed?<\/h3>\n<p>A replacement PCM that is not programmed with your vehicle&#8217;s VIN will likely not communicate properly with the engine and transmission, resulting in poor running conditions or a no-start. Some vehicles will still attempt to run in a limited capacity, but drivability will be severely affected.<\/p>\n<h3>Can I use a used PCM from a junkyard in my 2004 Jeep Grand Cherokee?<\/h3>\n<p>A used PCM would need to be reprogrammed with your vehicle&#8217;s VIN and mileage at a dealership or by a qualified specialist. Additionally, a used unit carries unknown history and may fail soon after installation. A remanufactured or new replacement often provides better long-term reliability.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>Deciding between repair and replacement for your 2004 Jeep Grand Cherokee depends on diagnosis results and your budget. Repairing an existing module may be possible in limited cases, but remanufactured or new replacements often prove more reliable for vehicles of this age. If replacement is the route you take, sourcing a unit pre-programmed with your VIN eliminates one step and reduces total repair time. Whether you handle the installation yourself or have a shop do the work, understanding these steps helps you evaluate quotes and avoid unexpected delays.<\/p>\n<figure style=\"margin:22px auto;text-align:center;max-width:720px\"><img decoding=\"async\" style=\"max-width:100%;height:auto;border:1px solid #e2e6ec;border-radius:8px\" src=\"https:\/\/www.fs1inc.com\/media\/wysiwyg\/googleshop\/chryslerjtec\/chrysler-pcm-jtec-1.jpg\" alt=\"Refurbished VIN-programmed PCM for the 2004 Jeep Grand Cherokee\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">A refurbished, VIN-programmed replacement PCM for the 2004 Jeep Grand Cherokee from Flagship One.<\/figcaption><\/figure>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2004-jeep-grand-cherokee-4-0l-engine-computer-pcm-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2004 Jeep Grand Cherokee<\/b><\/a> with a lifetime warranty, free shipping and no core charge. The full <a href=\"https:\/\/www.fs1inc.com\/jeep-ecu-ecm-pcm\/grand-cherokee-engine-computers.html\">Jeep Grand Cherokee module lineup<\/a> covers other engine configurations as well.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Final Thoughts<\/h2>\n<p>The Powertrain Control Module on your 2004 Jeep Grand Cherokee plays a critical role in engine and transmission operation. When internal faults develop, the vehicle&#8217;s drivability suffers, often dramatically. Professional diagnosis confirms whether replacement is needed, and understanding the programming requirements helps you plan the repair. If you determine a new PCM is the right solution, consider sourcing one already configured with your VIN to streamline installation.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>2004 Jeep Grand Cherokee with 4.0L engine experiencing no-start or driveability issues? The PCM (Powertrain Control Module) may be failing. Learn about replacement, programming, and what to expect before you repair.<\/p>\n","protected":false},"author":1,"featured_media":520451,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[258,34],"tags":[50,106,45],"class_list":["post-531544","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-car","category-jeep","tag-50","tag-grand-cherokee","tag-jeep"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2004 Jeep Grand Cherokee PCM Replacement and Programming - Flagship One Blog<\/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.fs1inc.com\/blog\/2004-jeep-grand-cherokee-pcm-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2004 Jeep Grand Cherokee PCM Replacement and Programming - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"2004 Jeep Grand Cherokee with 4.0L engine experiencing no-start or driveability issues? 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Learn about replacement, programming, and what to expect before you repair.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.fs1inc.com\/blog\/2004-jeep-grand-cherokee-pcm-replacement-guide\/\" \/>\n<meta property=\"og:site_name\" content=\"Flagship One Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/flagshipone\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/flagshipone\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-17T17:24:58+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-19T16:00:26+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2004-jeep-grand-cherokee-pcm-location-diagram.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"640\" \/>\n\t<meta property=\"og:image:height\" content=\"566\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"FlagshipOne\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@theflagshipone\" \/>\n<meta name=\"twitter:site\" content=\"@theflagshipone\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"FlagshipOne\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2004-jeep-grand-cherokee-pcm-replacement-guide\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2004-jeep-grand-cherokee-pcm-replacement-guide\\\/\"},\"author\":{\"name\":\"FlagshipOne\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\"},\"headline\":\"2004 Jeep Grand Cherokee PCM Replacement and Programming\",\"datePublished\":\"2026-07-17T17:24:58+00:00\",\"dateModified\":\"2026-07-19T16:00:26+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2004-jeep-grand-cherokee-pcm-replacement-guide\\\/\"},\"wordCount\":1668,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2004-jeep-grand-cherokee-pcm-replacement-guide\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/2004-jeep-grand-cherokee-pcm-location-diagram.webp\",\"keywords\":[\"2004\",\"grand cherokee\",\"Jeep\"],\"articleSection\":[\"Car\",\"Jeep\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2004-jeep-grand-cherokee-pcm-replacement-guide\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2004-jeep-grand-cherokee-pcm-replacement-guide\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2004-jeep-grand-cherokee-pcm-replacement-guide\\\/\",\"name\":\"2004 Jeep Grand Cherokee PCM Replacement and Programming - 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