{"id":530510,"date":"2026-07-18T18:01:22","date_gmt":"2026-07-18T22:01:22","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=530510"},"modified":"2026-07-19T11:52:53","modified_gmt":"2026-07-19T15:52:53","slug":"2020-gmc-yukon-xl-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2020-gmc-yukon-xl-pcm-replacement-guide\/","title":{"rendered":"2020 GMC Yukon XL PCM and ECM Replacement Guide"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2020 GMC Yukon XL PCM and ECM Replacement Guide<\/h1>\n<p class=\"hero-subtitle\">In the 2020 GMC Yukon XL the Powertrain Control Module (PCM) and Engine Control Module (ECM) act as the vehicle&#8217;s brain, managing fuel delivery, ignition timing, transmission shift points, and emissions controls. When either unit fails, the engine may not start, run roughly, or lose communication with diagnostic tools, and the vehicle will log internal fault codes such as P0601 through P060A.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>PCM and ECM control critical engine and transmission functions.<\/li>\n<li>Typical labor includes 0.8\u202fh for removal and 0.5\u202fh for relearn procedures.<\/li>\n<li>Factory programming is required after replacement, but Flagship One units arrive pre\u2011programmed.<\/li>\n<li>Common fault codes include P0601\u2011P062F, indicating internal module errors.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>If your 2020 GMC Yukon XL is showing a lack of power, erratic shifting, or refuses to start, the culprit may be the Powertrain Control Module or Engine Control Module. These electronic brains coordinate fuel injection, ignition timing, and transmission control, translating sensor data into actionable commands. Understanding how these modules operate, what the factory repair process entails, and how to avoid future failures can save you time and money. This guide walks you through the function of each module, where they reside, the labor involved in removal and installation, the programming steps required after a swap, typical symptoms, relevant service bulletins, and practical steps to keep the electronics healthy.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2020 GMC Yukon XL<\/h2>\n<p>The Powertrain Control Module in the 2020 GMC Yukon XL gathers input from dozens of sensors\u2014such as throttle position, crankshaft speed, and transmission output\u2014to calculate the optimal fuel\u2011air mixture and shift timing. It also monitors emissions controls and communicates with the Engine Control Module to ensure the engine runs within design parameters. When the PCM or ECM malfunctions, you may experience rough idle, loss of power, or transmission slip. The module\u2019s reliability is essential for meeting fuel\u2011efficiency standards and for the vehicle\u2019s overall drivability. <a href=\"https:\/\/www.fs1inc.com\/gm\/gmc-pcm-ecm-ecu-engine-computer\/yukon-xl-engine-computers.html\">2020 GMC Yukon XL engine control module<\/a> replacement is often necessary when internal diagnostics indicate a fault that cannot be cleared by a simple reset.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Where the PCM Is Located and What Replacement Involves<\/h2>\n<p>The PCM and ECM are mounted within the engine compartment, typically attached to the firewall or a bracket near the intake manifold. Access requires removal of a few fasteners and the connector harness. According to the labor guide, removing the Powertrain Control Module takes about 0.8\u202fhours, while reinstalling it follows the same time estimate. After the unit is secured, the factory procedure calls for a PCM relearn (0.5\u202fhours) and an ECM relearn (0.5\u202fhours). If the ECM needs a reset, an additional 0.3\u202fhours is allocated. All steps are performed with the battery disconnected and the vehicle in park to ensure safety.<\/p>\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 2020 GMC Yukon XL<\/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> the negative battery cable.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> any debris from around the control module connector.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Disconnect<\/b> the electrical connectors.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Release<\/b> the retaining tabs.<\/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 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\">0.8 hr<\/td>\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\">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\">0.8 hr<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Programming Requirements After Replacement<\/h2>\n<p>Once the new module is physically installed, the factory protocol requires you to access the Service Programming System (SPS) and follow the on\u2011screen prompts to reprogram the control unit. This includes uploading the latest calibration files and completing the relearn cycles for both the PCM and ECM. Flagship One supplies <a href=\"https:\/\/www.fs1inc.com\/2020-gmc-yukon-xl-5-3l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\">a VIN-programmed replacement unit<\/a> that arrives already matched to your vehicle, so the SPS steps are already satisfied, eliminating the need for additional programming time on the shop floor.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>When the PCM or ECM in a 2020 GMC Yukon XL begins to fail, drivers often notice a sudden loss of power, intermittent stalling, or a failure to shift smoothly. The check\u2011engine light may illuminate, and a scan tool might report communication loss with the module. Rough idle, misfire patterns, and unexpected shutdowns are also common. In many cases the diagnostic trouble reader will capture an internal fault such as <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\">internal control fault<\/a> indicating a problem within the module\u2019s processor or memory. These symptoms typically worsen as the module\u2019s internal components degrade, making early detection important.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2020 GMC Yukon XL<\/h2>\n<p>The following trouble codes are commonly recorded when the PCM or ECM encounters internal errors in the 2020 GMC Yukon XL:<\/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<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0602-control-module-programming-error\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0602<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0602-control-module-programming-error\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Control module programming error<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0602-control-module-programming-error\/\" style=\"color:#0563C1\"><b><u>Full P0602 guide &rarr;<\/u><\/b><\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0603-internal-control-module-keep-alive-memory-kam-error\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0603<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0603-internal-control-module-keep-alive-memory-kam-error\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Keep-alive memory (KAM) error<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0603-internal-control-module-keep-alive-memory-kam-error\/\" style=\"color:#0563C1\"><b><u>Full P0603 guide &rarr;<\/u><\/b><\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0604-internal-control-module-random-access-memory-ram-error\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0604<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0604-internal-control-module-random-access-memory-ram-error\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Internal RAM error<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0604-internal-control-module-random-access-memory-ram-error\/\" style=\"color:#0563C1\"><b><u>Full P0604 guide &rarr;<\/u><\/b><\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0606-control-module-processor\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0606<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0606-control-module-processor\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Module processor failure<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0606-control-module-processor\/\" style=\"color:#0563C1\"><b><u>Full P0606 guide &rarr;<\/u><\/b><\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0607-control-module-performance\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0607<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0607-control-module-performance\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Module performance fault<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0607-control-module-performance\/\" style=\"color:#0563C1\"><b><u>Full P0607 guide &rarr;<\/u><\/b><\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><b>P060A<\/b><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Module-internal fault<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">&mdash;<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p062f-internal-control-module-eeprom-error\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P062F<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p062f-internal-control-module-eeprom-error\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Internal EEPROM error<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p062f-internal-control-module-eeprom-error\/\" style=\"color:#0563C1\"><b><u>Full P062F 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>Bulletin #20-NA-090 (Jan\u202f24\u202f2022) addresses identification of non\u2011GM ECM calibrations in Duramax diesel engines using GDS\u202f2. Bulletin #06-08-47-001O (Jun\u202f11\u202f2019) provides guidance on warranty administration for SPS control module reprogramming. Bulletin #09-06-04-026V (Feb\u202f11\u202f2022) details how to identify aftermarket gasoline engine calibrations with Tech\u202f2 or GDS\u202f2 in the United States and Canada.<\/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\">&mdash;<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Bulletins &gt; Engine\/Propulsion &gt; #20-NA-090: Identifying Non-GM ECM Calibration Use and Power-up<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">&mdash;<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><b>06-08-47-001<\/b><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Bulletins &gt; Power and Signal Distribution &gt; #06-08-47-001O: Warranty Administration &#8211; Warranty <\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">\u201d field on the job card. Dealers must also enter one of the codes in the<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><b>09-06-04-026<\/b><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Bulletins &gt; Engine\/Propulsion &gt; #09-06-04-026V: Identifying Non-GM (Aftermarket) Engine Calibra<\/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 2020 GMC Yukon XL<\/h2>\n<ul style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\">Maintain a healthy charging system to avoid voltage spikes that can damage the modules.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Ensure all ground straps and connector pins are clean and free of corrosion.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Use proper jump\u2011start procedures to prevent excessive voltage from reaching the PCM and ECM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address any diagnostic trouble codes promptly before they lead to module failure.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Inspect connector seals regularly and replace if cracked or brittle.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid prolonged exposure to extreme temperatures that can stress electronic components.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>Can I replace the PCM in my 2020 GMC Yukon XL myself?<\/h3>\n<p>The PCM is accessible but requires careful handling of electrical connectors and adherence to relearn procedures. While a competent DIYer can perform the swap, professional tools for the SPS programming step are typically needed.<\/p>\n<h3>What does a P0602 code indicate for my Yukon XL?<\/h3>\n<p>P0602 signals an internal fault in the PCM&#8217;s processor. It usually requires module replacement after confirming that wiring and power supplies are intact.<\/p>\n<h3>How often should the ECU be reset after a battery replacement?<\/h3>\n<p>After a battery change, the ECU may need a reset or relearn cycle to re\u2011establish sensor baselines. Following the 0.5\u2011hour ECM reset procedure helps ensure proper operation.<\/p>\n<h3>Is there a warranty on Flagship One replacement modules?<\/h3>\n<p>Flagship One offers a standard warranty that covers defects in materials and workmanship. Specific terms depend on the purchase agreement.<\/p>\n<h3>What are the risks of using an aftermarket calibration on my Yukon XL?<\/h3>\n<p>Aftermarket calibrations can trigger the service bulletins related to non\u2011GM engine calibrations, potentially voiding warranty coverage and leading to unexpected fault codes.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>When a PCM or ECM fails in your 2020 GMC Yukon XL, you can choose a brand\u2011new factory\u2011programmed unit or a refurbished replacement that meets OEM specifications. Both options require the same removal and installation steps, but a refurbished module from Flagship One arrives pre\u2011programmed, saving you the SPS programming time on the shop floor.<\/p>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2020-gmc-yukon-xl-5-3l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2020 GMC Yukon XL<\/b><\/a> with a lifetime warranty, free shipping and no core charge. The full <a href=\"https:\/\/www.fs1inc.com\/gm\/gmc-pcm-ecm-ecu-engine-computer\/yukon-xl-engine-computers.html\">GMC Yukon XL 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 and Engine Control Modules are vital to the reliable operation of your 2020 GMC Yukon XL. Whether you opt for a new or refurbished unit, following the proper removal, installation, and programming procedures will help restore performance and keep the vehicle running smoothly. Consider preventive maintenance to extend the life of these electronic components.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Learn how a failing PCM or ECM can cause no\u2011start, stalling, or shift issues in your 2020 GMC Yukon XL and what precautions to take before repair.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[258,270],"tags":[676,68,1444],"class_list":["post-530510","post","type-post","status-publish","format-standard","hentry","category-car","category-gmc","tag-676","tag-gmc","tag-yukon-xl"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2020 GMC Yukon XL PCM and ECM Replacement Guide - 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\/2020-gmc-yukon-xl-pcm-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2020 GMC Yukon XL PCM and ECM Replacement Guide - 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