{"id":524867,"date":"2026-07-16T02:41:54","date_gmt":"2026-07-16T06:41:54","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=524867"},"modified":"2026-07-16T02:41:54","modified_gmt":"2026-07-16T06:41:54","slug":"2020-chevrolet-malibu-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2020-chevrolet-malibu-pcm-replacement-guide\/","title":{"rendered":"2020 Chevrolet Malibu ECM Replacement: What You Need to Know"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2020 Chevrolet Malibu ECM Replacement: What You Need to Know<\/h1>\n<p class=\"hero-subtitle\">The Engine Control Module (ECM) in your 2020 Chevrolet Malibu with the 1.5L turbocharged engine serves as the central computer that manages fuel injection, ignition timing, emissions controls, and transmission shifting. When internal memory faults develop, the module may lose calibration data or fail to communicate with the scan tool, causing drivability issues.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>The 1.5L Malibu ECM replacement book time is 0.7 hours for R&amp;R plus 0.5 hours for relearn procedure<\/li>\n<li>Internal trouble codes P0601-P062F indicate ECM memory or processor failures requiring replacement<\/li>\n<li>Factory procedure requires disconnecting the battery negative cable before ECM connector removal<\/li>\n<li>Flagship One replacement ECMs arrive VIN-programmed, eliminating the dealer reprogramming step<\/li>\n<li>Always turn the ignition off before installing or removing ECM connectors to prevent component damage<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>If your 2020 Chevrolet Malibu with the 1.5L engine won&#8217;t start, stalls unexpectedly, or displays multiple drivability codes, the Engine Control Module may be the culprit. The ECM functions as the brain of your vehicle&#8217;s powertrain, managing critical engine functions that affect performance, fuel economy, and emissions. This guide explains how the module works, common failure symptoms, and what replacement involves so you can make an informed repair decision.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2020 Chevrolet Malibu<\/h2>\n<p>The Engine Control Module in your 2020 Chevrolet Malibu is the primary computer responsible for regulating the 1.5L turbocharged engine&#8217;s operation. It processes inputs from dozens of sensors\u2014including the mass air flow, coolant temperature, and oxygen sensors\u2014to calculate optimal fuel delivery and ignition timing for every driving condition. The ECM also controls the automatic transmission shift points, manages the throttle body, and monitors emissions systems to ensure your vehicle meets federal standards. Because this module handles such a wide array of functions, <a href=\"https:\/\/www.fs1inc.com\/gm-general-motors\/chevrolet-pcm-ecm-ecu-engine-computer\/malibu-engine-computers.html\">replacement engine computers for the Malibu<\/a> must be precisely programmed to match your vehicle&#8217;s specific VIN, sensor configuration, and equipment options. When the internal processor or memory fails, the module may store trouble codes, lose communication with diagnostic tools, or default to limp-home mode, severely limiting engine performance.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Where the PCM Is Located and What Replacement Involves<\/h2>\n<p>The Engine Control Module on the 2020 Chevrolet Malibu is located on the driver&#8217;s side of the engine compartment, mounted to a bracket attached to the engine valley cover. Replacement requires disconnecting the battery negative cable first\u2014a critical safety step that prevents voltage spikes from damaging sensitive electronics. The labor procedure involves removing the ECM bracket bolt, extracting the module and bracket as an assembly, releasing the two ECM cover clips, and then separating the module from its bracket. The book time for ECM R&amp;R on the 1.5L engine is 0.7 hours, with an additional 0.5 hours allocated for the relearn procedure that recalibrates the new module to your vehicle&#8217;s specific parameters. After installation, the ignition must be turned off before reconnecting the ECM connectors to comply with the factory caution against component damage.<\/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\">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\">1.5L<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.7 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\">2.0L<\/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 R&amp;R<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">1.5L<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.7 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\">2.0L<\/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\">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<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Programming Requirements After Replacement<\/h2>\n<p>The factory service procedure for your 2020 Chevrolet Malibu requires disconnecting the battery negative cable before removing any ECM electrical connectors. After the new module is installed, the ECM must be reprogrammed\u2014this involves entering the vehicle identification number and configuring the module for the specific engine and transmission combination. However, when you purchase <a href=\"https:\/\/www.fs1inc.com\/2020-chevrolet-malibu-1-5l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\">a VIN-programmed replacement unit<\/a> from Flagship One, the module arrives already configured with your exact VIN, eliminating this dealer-only programming step. You will still need to perform the battery disconnection and reconnection sequence to allow the new ECM to initialize, but the reprogramming process that typically requires GM&#8217;s SPS software is already completed before the part ships.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>When the Engine Control Module fails on a 2020 Chevrolet Malibu, several distinct patterns often emerge. The most common complaint is a no-start condition\u2014the engine cranks normally but won&#8217;t fire because the ECM isn&#8217;t delivering fuel or spark. Stalling after startup is another frequent symptom, particularly if the module loses calibration data mid-operation. Multiple misfire codes (P0300 series) may appear across cylinders even though the spark plugs and injectors are functioning correctly, indicating the ECM isn&#8217;t properly sequencing fuel delivery. In some cases, the scan tool cannot establish communication with the ECM, or the module may set <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\">internal memory checksum failure<\/a> along with other P0600-series codes that point directly to internal component faults. Transmission shifting may become harsh or erratic, and the check engine light typically remains illuminated.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2020 Chevrolet Malibu<\/h2>\n<p>The 2020 Chevrolet Malibu&#8217;s 1.5L engine may store several module-internal trouble codes that indicate the ECM itself has failed rather than an external sensor or actuator. These codes\u2014ranging from P0601 through P062F\u2014signal various internal faults such as memory checksum errors, processor malfunctions, or calibration data corruption. When these codes appear alongside drivability symptoms and no external causes are found, ECM replacement is typically the recommended 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\">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>P060B<\/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>Factory service bulletin #06-08-47-001, dated June 11, 2019, covers warranty administration procedures for control module reprogramming under warranty. This bulletin provides dealers with guidelines for submitting warranty claims when SPS (Service Programming System) is used to reprogram replacement ECMs. While the bulletin primarily addresses warranty claim processing, it confirms that GM recognizes ECM reprogramming as a standard warranty-covered procedure.<\/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>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<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Protecting the PCM in Your 2020 Chevrolet Malibu<\/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\u2014alternator output above or below spec can cause voltage fluctuations that damage the ECM over time<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Keep ECM connectors and ground points clean and secure; corrosion or loose connections can induce electrical noise<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid jump-starting from another vehicle when possible; voltage spikes during boost can overwhelm the module&#8217;s internal circuits<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address check engine lights promptly\u2014ignoring stored codes allows underlying issues to worsen and may stress the ECM<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Inspect engine compartment for water intrusion after flooding or car washes; moisture can enter the ECM housing and cause short circuits<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Do not perform battery jumps with the engine running; let the donor vehicle run for several minutes before connecting cables to stabilize voltage<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>Will a used ECM from a salvage yard work in my 2020 Chevrolet Malibu?<\/h3>\n<p>A used ECM requires dealer programming with GM&#8217;s SPS software to match your specific VIN and configuration. This programming is expensive and may not be covered under any warranty. Flagship One units ship pre-programmed with your VIN, eliminating this step entirely.<\/p>\n<h3>Can I drive my Malibu with a failing ECM?<\/h3>\n<p>Driving with a compromised ECM is not recommended. The module may cause sudden stalls, loss of power, or transmission shifting problems that create safety hazards. Additionally, some states will fail emissions testing if the ECM cannot complete its emissions monitoring cycle.<\/p>\n<h3>Why does my new ECM need a relearn procedure?<\/h3>\n<p>The relearn procedure allows the new ECM to calibrate its idle strategy, fuel trims, and transmission adaptions to your specific engine. Without this procedure, you may experience rough idle, poor fuel economy, or harsh shifting until the module learns your vehicle&#8217;s characteristics.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>If your 2020 Chevrolet Malibu has been diagnosed with ECM failure or displays multiple P0600-series codes, you have two primary repair paths. You can purchase a new or remanufactured unit from a dealer, which will require GM SPS programming before it will function\u2014this adds cost and downtime. Alternatively, a VIN-programmed replacement from Flagship One arrives ready to install, with the reprogramming already completed using your exact vehicle identification number. Consider your budget, timeline, and comfort with dealer visits when deciding which option suits your needs.<\/p>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2020-chevrolet-malibu-1-5l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2020 Chevrolet Malibu<\/b><\/a> with a lifetime warranty, free shipping and no core charge. The full <a href=\"https:\/\/www.fs1inc.com\/gm-general-motors\/chevrolet-pcm-ecm-ecu-engine-computer\/malibu-engine-computers.html\">Chevrolet Malibu 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 Engine Control Module in your 2020 Chevrolet Malibu is a critical component that manages virtually every aspect of engine and transmission operation. When internal faults cause starting issues, stalling, or multiple drivability codes, replacement is often necessary. By choosing a pre-programmed replacement unit, you can complete the repair with confidence knowing the module will communicate with your vehicle&#8217;s systems immediately upon installation.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>A no-start condition or stalling on your 2020 Chevrolet Malibu may stem from ECM failure. Always disconnect the battery before module service to prevent component damage. Flagship One units arrive VIN-programmed, eliminating dealer reprogramming delays.<\/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":[258,274],"tags":[676,67,340],"class_list":["post-524867","post","type-post","status-publish","format-standard","hentry","category-car","category-chevrolet","tag-676","tag-chevrolet","tag-malibu"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2020 Chevrolet Malibu ECM Replacement: What You Need to Know - 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-chevrolet-malibu-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 Chevrolet Malibu ECM Replacement: What You Need to Know - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"A no-start condition or stalling on your 2020 Chevrolet Malibu may stem from ECM failure. Always disconnect the battery before module service to prevent component damage. 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