{"id":530464,"date":"2026-07-17T09:52:16","date_gmt":"2026-07-17T13:52:16","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=530464"},"modified":"2026-07-19T11:50:55","modified_gmt":"2026-07-19T15:50:55","slug":"2017-gmc-acadia-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2017-gmc-acadia-pcm-replacement-guide\/","title":{"rendered":"2017 GMC Acadia PCM Replacement and ECM Repair Guide"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2017 GMC Acadia PCM Replacement and ECM Repair Guide<\/h1>\n<p class=\"hero-subtitle\">The Powertrain Control Module serves as the central computer for your 2017 GMC Acadia, managing engine and transmission operations. Internal memory failures in this module commonly trigger P0600-series trouble codes and may cause starting problems, poor performance, or transmission shifting issues.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>The PCM manages both engine and transmission functions on the 3.6L V6 engine.<\/li>\n<li>Module-internal codes P0601 through P0630 indicate electronic failures within the control unit.<\/li>\n<li>Factory caution requires the ignition to be off before handling any module connectors.<\/li>\n<li>PCM replacement involves separate relearn and reset procedures totaling additional labor time.<\/li>\n<li>Pre-programmed replacement modules arrive configured for your specific vehicle.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>When the powertrain control module on your 2017 GMC Acadia begins to fail, the effects can range from an illuminated check engine light to a vehicle that refuses to start. The PCM serves as the nerve center for your engine and transmission, processing data from numerous sensors and commanding the actuators that keep everything running smoothly. This guide explains what the module does, how failures manifest, and what your repair options look like. You will learn about common symptoms tied to this specific vehicle, the factory-recommended procedures, and what to expect during replacement. Understanding the role of this critical component helps you make informed decisions about whether to repair or replace it when trouble arises.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2017 GMC Acadia<\/h2>\n<p>The Powertrain Control Module in your 2017 GMC Acadia functions as the primary computer responsible for managing both engine and transmission operations. This unit processes real-time data from oxygen sensors, mass airflow sensors, crankshaft position sensors, and numerous other inputs to calculate optimal fuel delivery, spark timing, and transmission shift points. On the 3.6L V6 engine found in this vehicle, the module must coordinate cam phaser operation, variable valve timing, and torque management alongside basic engine functions. Without this module functioning correctly, the engine may run poorly or not at all, and the transmission may fail to shift properly. <a href=\"https:\/\/www.fs1inc.com\/gm\/gmc-pcm-ecm-ecu-engine-computer\/acadia-engine-computers.html\">replacement engine computers for the Acadia<\/a> are engineered to match the original specifications of your vehicle. The module also monitors its own internal memory and circuitry, which is why specific trouble codes like P0601 through P0630 appear when internal faults are detected.<\/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 in the 2017 GMC Acadia is typically mounted inside the passenger cabin, often behind the glove box or beneath the dashboard on the right side. Accessing the module requires removing interior trim panels and any protective covers that shield the electrical components. The Powertrain Control Module removal and installation procedure is listed at 0.8 hours in the factory labor guide. After the physical replacement is complete, additional procedures must be performed. The module relearn procedure requires 0.5 hours, the engine control module relearn takes another 0.5 hours, and the engine control module reset requires 0.3 hours. During any work involving the module or its connectors, the ignition must be turned off to prevent damage to sensitive electronic components. Torque specifications for mounting hardware and connector grounds should be followed according to the service manual.<\/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 2017 GMC Acadia<\/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<\/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>After replacing the Powertrain Control Module on your 2017 GMC Acadia, the factory service procedure requires performing a relearn procedure lasting 0.5 hours and a reset procedure taking 0.3 hours. These steps allow the new module to calibrate to your vehicle&#8217;s specific sensors and learn drive cycle characteristics. The engine control module relearn accounts for another 0.5 hours of labor. <a href=\"https:\/\/www.fs1inc.com\/2017-gmc-acadia-3-6l-ecm-engine-computer-pcm-ecu-programmed-plug-play.html\">a VIN-programmed replacement unit<\/a> arrives already configured with your vehicle&#8217;s identification information and calibration data, which means the post-install programming steps are already completed before the module reaches you. This pre-configuration can simplify the overall repair process and reduce the time your vehicle spends in the shop. Always verify that the replacement module matches your vehicle&#8217;s specifications before installation.<\/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 2017 GMC Acadia, you may notice a variety of symptoms affecting drivability and overall performance. The check engine light often illuminates as one of the first indicators, sometimes accompanied by a reduction in engine power or a noticeable decrease in fuel economy. Starting problems are common, ranging from extended cranking times to a complete no-start condition where the engine does not crank at all. Stalling and hesitation during acceleration frequently occur because the module can no longer properly meter fuel or control ignition timing. Transmission shifting may become erratic or feel unresponsive as the PCM cannot communicate effectively with the transmission control module. Dead communication on a diagnostic scan tool often points directly to a module failure. <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\">internal memory checksum errors<\/a> represent one of the specific fault patterns seen with this type of failure, indicating that critical data within the module&#8217;s memory has become corrupted or invalid.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2017 GMC Acadia<\/h2>\n<p>The 2017 GMC Acadia stores module-internal trouble codes that indicate electronic failures within the Powertrain Control Module itself. These codes include P0601, P0602, P0603, P0604, P0606, P062B, P062F, and P0630. Each code points to a specific type of internal fault such as memory checksum errors, nonvolatile memory failures, calibration corruption, or VIN mismatch conditions. When these codes appear without other external sensor failures, the Powertrain Control Module typically requires replacement rather than individual sensor 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\"><b>P062B<\/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<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0630-vin-not-programmed-incompatible-ecmpcm\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0630<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0630-vin-not-programmed-incompatible-ecmpcm\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Module-internal fault<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0630-vin-not-programmed-incompatible-ecmpcm\/\" style=\"color:#0563C1\"><b><u>Full P0630 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 PIP5373B, published in June 2018, addresses programming errors E4491 and E4423 affecting the Engine Control Module on the 2017 GMC Acadia. This bulletin provides guidance for technicians encountering specific programming failures during ECM replacement or updates. The procedure outlined in the bulletin helps ensure proper module initialization and prevents recurring fault codes. If you are experiencing programming-related issues with your vehicle&#8217;s ECM, referencing this bulletin number with your service provider may help identify the correct diagnostic and repair approach.<\/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\">Program ECM Error E4491\/E4423 &#8211; (Jun 11, 2018)<\/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 2017 GMC Acadia<\/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 by testing the battery and alternator regularly to prevent voltage fluctuations that stress electronic modules.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Keep all electrical grounds clean and tight, as poor ground connections can introduce voltage irregularities that damage sensitive control units.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid jump-starting the vehicle with high-voltage chargers or incorrect polarity, which can send voltage spikes through the PCM circuitry.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address any diagnostic trouble codes promptly before they cascade into more serious module damage.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">When servicing the vehicle, ensure that connector seals remain intact and free of corrosion to maintain reliable electrical communication.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Use quality replacement parts from reputable suppliers to reduce the likelihood of premature module failure.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>How do I know if my 2017 GMC Acadia needs a PCM replacement instead of a repair?<\/h3>\n<p>If your vehicle is setting module-internal codes like P0601 through P0630 without corresponding sensor failures, the PCM itself has likely failed internally. Repairs may be attempted for certain software corruption issues, but physical component damage typically requires replacement with a unit programmed for your specific vehicle.<\/p>\n<h3>Will a used PCM from another GMC Acadia work in my vehicle?<\/h3>\n<p>A used module will not be programmed with your vehicle&#8217;s VIN, security keys, or calibration data. This creates potential issues with anti-theft systems, emissions compliance, and proper engine management. A VIN-programmed replacement matched to your specific vehicle is generally the safer and more reliable option.<\/p>\n<h3>What risks come with driving a 2017 GMC Acadia that has a failing PCM?<\/h3>\n<p>A malfunctioning module can cause unpredictable stalling, limp-home mode with severely reduced power, or a no-start condition that leaves you stranded. Prolonged operation with a failing PCM may also lead to secondary damage to emissions components or transmission issues due to improper control signals.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>Choosing between repairing your existing Powertrain Control Module and installing a replacement depends on the nature of the failure and your vehicle&#8217;s service history. Internal electronic faults within the module generally cannot be repaired through external service procedures, making replacement the more practical solution for most owners. Flagship One offers pre-programmed replacement units configured specifically for the 2017 GMC Acadia, which means the module arrives ready to install without requiring additional programming at the dealership. Consider the total labor investment, which includes not just the physical replacement but the required relearn and reset procedures that follow installation.<\/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\/gmtypeE39a\/gm-pcm-typeE39a-1.jpg\" alt=\"Refurbished VIN-programmed PCM for the 2017 GMC Acadia\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">A refurbished, VIN-programmed replacement PCM for the 2017 GMC Acadia from Flagship One.<\/figcaption><\/figure>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2017-gmc-acadia-3-6l-ecm-engine-computer-pcm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2017 GMC Acadia<\/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\/acadia-engine-computers.html\">GMC Acadia 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 is essential to the operation of your 2017 GMC Acadia, governing everything from engine starting to transmission shifting. When module-internal codes appear, replacement is often the most effective solution. A pre-programmed replacement unit matched to your vehicle&#8217;s specifications can reduce overall repair complexity and get your Acadia back on the road with minimal delay.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>2017 GMC Acadia PCM replacement guide covers symptoms, trouble codes P0601-P0630, programming steps, and installation for the 3.6L V6 control module.<\/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":[345,645,68],"class_list":["post-530464","post","type-post","status-publish","format-standard","hentry","category-car","category-gmc","tag-345","tag-acadia","tag-gmc"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2017 GMC Acadia PCM Replacement and ECM Repair Guide - 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