{"id":530321,"date":"2026-07-17T09:46:28","date_gmt":"2026-07-17T13:46:28","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=530321"},"modified":"2026-07-19T11:44:59","modified_gmt":"2026-07-19T15:44:59","slug":"2005-gmc-yukon-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2005-gmc-yukon-pcm-replacement-guide\/","title":{"rendered":"2005 GMC Yukon 4.8L Engine PCM Replacement and Programming Guide"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2005 GMC Yukon 4.8L Engine PCM Replacement and Programming Guide<\/h1>\n<p class=\"hero-subtitle\">The Powertrain Control Module (PCM) in your 2005 GMC Yukon manages engine and transmission functions. Failure can cause drivability issues, shift problems, and stored trouble codes such as P0601 through P1683. It requires careful handling during replacement.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>PCM removal and replacement has a book time of 1.4 hours for the 2005 GMC Yukon.<\/li>\n<li>Factory procedure requires capturing PCM data with a scan tool before removal and restoring it into the new module.<\/li>\n<li>A 0.5-hour relearn is necessary after installing a new PCM unless it arrives pre-programmed.<\/li>\n<li>A service bulletin addresses a 2-3 shift clunk noise under 30 mph by reprogramming the PCM.<\/li>\n<li>Internal PCM trouble codes like P0601, P0602, and P1621 are documented for this vehicle.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>If you are replacing the Powertrain Control Module (PCM) in your 2005 GMC Yukon with the 4.8L engine, you need to follow specific factory steps to avoid damage and ensure proper operation. The PCM is the central computer that controls engine timing, fuel delivery, and transmission shifting. This guide explains the replacement procedure, the required data capture and relearn steps, and how a pre-programmed unit from Flagship One simplifies the job. You will also learn about common symptoms of PCM failure, relevant service bulletins, and how to protect the module from future issues.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2005 GMC Yukon<\/h2>\n<p>The Powertrain Control Module (PCM) in your 2005 GMC Yukon is a single unit that integrates engine and transmission control. It receives sensor inputs for throttle position, crankshaft speed, oxygen levels, and more, then adjusts fuel injection, ignition timing, and shift patterns in real time. Because the PCM also stores adaptive learning data unique to your vehicle, a failure can cause rough running, poor fuel economy, or transmission clunks. When you need a new module, you can find <a href=\"https:\/\/www.fs1inc.com\/gm\/gmc-pcm-ecm-ecu-engine-computer\/yukon-engine-computers.html\">replacement PCMs for the Yukon<\/a> that match your 4.8L engine. The PCM is sensitive to electrostatic discharge and voltage spikes, so proper handling is critical.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Where the PCM Is Located and What Replacement Involves<\/h2>\n<p>The exact location of the PCM in the 2005 GMC Yukon is not specified in the available data, but the book time for removal and replacement is 1.4 hours. The factory cautions that you must use a scan tool to capture the PCM data before disconnecting any connectors. Additionally, the ignition must be turned off when disconnecting or reconnecting the PCM connector to prevent internal damage. After installing the new module, a 0.5-hour relearn procedure is required to restore the captured data and allow the PCM to adapt to your vehicle.<\/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\/2005-gmc-yukon-pcm-location-diagram.webp\" alt=\"2005 GMC Yukon PCM location diagram\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">PCM mounting location on the 2005 GMC Yukon.<\/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 2005 GMC Yukon<\/h3>\n<ol style=\"margin:14px 0 6px 0;padding-left:26px\">\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 negative battery cable.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Release<\/b> the PCM cover mounting tabs.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Release<\/b> the PCM cover from the mounting brackets.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> the PCM cover.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Loosen<\/b> the PCM electrical connector bolts.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Disconnect<\/b> the PCM electrical connectors.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Release<\/b> the spring latch from the PCM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Release<\/b> the PCM mounting tabs from the PCM.<\/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\">Yukon<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">1.4 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\">Yukon XL 1500<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">1.4 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\">Yukon XL 2500<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">1.4 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\">Yukon<\/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 Relearn<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Yukon XL 1500<\/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 Relearn<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Yukon XL 2500<\/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\">Yukon<\/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\">Yukon XL 1500<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.5 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 PCM in your 2005 GMC Yukon, the factory procedure requires you to capture the original PCM data with a scan tool before removal, install the new module, and then perform a 0.5-hour relearn to restore that data. This relearn ensures the transmission shift patterns and engine calibrations match your vehicle. Flagship One supplies <a href=\"https:\/\/www.fs1inc.com\/2005-gmc-yukon-4-8l-engine-computer-pcm-ecm-ecu-programmed-plug-play.html\">a VIN-programmed replacement PCM<\/a> that arrives with your vehicle\u2019s original data already loaded, so the capture and relearn steps are already completed. You can install the unit and start the engine without additional programming.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>A failing PCM in your 2005 GMC Yukon may cause a no-start condition, intermittent stalling, or erratic shifting. You might also see misfire codes or a complete loss of communication with a scan tool. A common complaint is a 2-3 shift clunk noise, especially under 30 mph, which is addressed by a service bulletin. If the module develops an internal fault, you may encounter <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\">internal PCM fault<\/a> that prevents the engine from running properly. Other symptoms include poor fuel economy, transmission slipping, and the check engine light illuminating with codes like P0602 or P1621.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2005 GMC Yukon<\/h2>\n<p>The following trouble codes are documented for the PCM in the 2005 GMC Yukon. These module-internal codes indicate faults within the PCM itself rather than external sensors or circuits.<\/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-p0605-internal-control-module-read-only-memory-rom-error\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0605<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0605-internal-control-module-read-only-memory-rom-error\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Internal ROM error<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0605-internal-control-module-read-only-memory-rom-error\/\" style=\"color:#0563C1\"><b><u>Full P0605 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\"><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-p1600-pcm-battery-voltage-supply-loss-of-communication\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P1600<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p1600-pcm-battery-voltage-supply-loss-of-communication\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Loss of communication \/ battery voltage supply fault<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p1600-pcm-battery-voltage-supply-loss-of-communication\/\" style=\"color:#0563C1\"><b><u>Full P1600 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-p1621-control-module-long-term-memory-performance\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P1621<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p1621-control-module-long-term-memory-performance\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Control module long-term memory performance<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p1621-control-module-long-term-memory-performance\/\" style=\"color:#0563C1\"><b><u>Full P1621 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-p1627-control-module-a-d-performance\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P1627<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p1627-control-module-a-d-performance\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">A\/D performance fault<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p1627-control-module-a-d-performance\/\" style=\"color:#0563C1\"><b><u>Full P1627 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-p1680-control-module-calibration-memory-fault\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P1680<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p1680-control-module-calibration-memory-fault\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Calibration memory fault<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p1680-control-module-calibration-memory-fault\/\" style=\"color:#0563C1\"><b><u>Full P1680 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>Two factory service bulletins apply to the 2005 GMC Yukon PCM. Bulletin #05-07-30-012 (May 2005) addresses a 2-3 shift clunk noise that is most noticeable when the shift occurs under approximately 30 mph. The remedy is to reprogram the PCM. Bulletin #05-06-04-060 (September 2005) covers diagnostic trouble codes P0601, P0602, P0603, P0604, and P1621 that may be shared across multiple modules, including the PCM, ECM, and TCM. Both bulletins emphasize the importance of proper PCM programming.<\/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>05-07-30-012<\/b><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">4L60-E\/4L65-E Automatic Transmission 2-3 Shift Clunk (Reprogram Powertrain Control Module (PCM)<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Some customers may comment on a 2-3 shift clunk noise. Typically, this clunk noise is most noticeable when the 2-3 shift occurs under approximately 48 km\/h (30\u2026<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><b>05-06-04-060<\/b><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Powertrain Control Module (PCM), Engine Control Module (ECM), Transmission Control Module (ECM)<\/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 2005 GMC Yukon<\/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; voltage spikes from a failing alternator can damage the PCM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Keep all ground connections and PCM connector terminals clean and free of corrosion.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid jump-starting your vehicle with a running donor car; use a battery charger instead to prevent voltage surges.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address any trouble codes promptly, especially internal PCM codes like P0601, to prevent further damage.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Inspect the PCM connector seal and housing for cracks or moisture intrusion, and replace if compromised.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>What is the book time for PCM replacement on a 2005 GMC Yukon?<\/h3>\n<p>The labor time for removing and replacing the PCM is 1.4 hours. An additional 0.5 hours is required for the relearn procedure if the module is not pre-programmed.<\/p>\n<h3>Do I need to capture PCM data before removing the module on my 2005 GMC Yukon?<\/h3>\n<p>Yes, the factory procedure requires you to use a scan tool to capture the PCM data before disconnecting any connectors. This data must then be restored into the new PCM to maintain proper vehicle operation.<\/p>\n<h3>What does the 2-3 shift clunk service bulletin cover for the 2005 GMC Yukon?<\/h3>\n<p>Bulletin #05-07-30-012 addresses a 2-3 shift clunk noise that occurs under approximately 30 mph. The fix involves reprogramming the PCM to adjust shift timing and pressure.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>When your 2005 GMC Yukon PCM fails, you have two options: have a shop perform the factory replacement and relearn, or choose a refurbished unit that arrives pre-programmed. A pre-programmed PCM from Flagship One eliminates the need for data capture and the 0.5-hour relearn, saving time and ensuring your Yukon\u2019s engine and transmission calibrations are correct from the start.<\/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\/gmtypeA\/gm-pcm-typea-1.jpg\" alt=\"Refurbished VIN-programmed PCM for the 2005 GMC Yukon\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">A refurbished, VIN-programmed replacement PCM for the 2005 GMC Yukon from Flagship One.<\/figcaption><\/figure>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2005-gmc-yukon-4-8l-engine-computer-pcm-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2005 GMC Yukon<\/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-engine-computers.html\">GMC Yukon module lineup<\/a> covers other engine configurations as well.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Final Thoughts<\/h2>\n<p>Replacing the PCM in your 2005 GMC Yukon 4.8L requires careful attention to factory cautions, including data capture and ignition-off disconnection. A pre-programmed replacement module simplifies the job by removing the need for post-install relearn. For a direct fit that restores your vehicle\u2019s performance, consider a VIN-programmed PCM from Flagship One.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>If your 2005 GMC Yukon has a 2-3 shift clunk or internal PCM codes like P0601, follow factory cautions to capture data before removal. A VIN-programmed replacement avoids the 0.5-hour relearn.<\/p>\n","protected":false},"author":1,"featured_media":520327,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[258,270],"tags":[114,68,657],"class_list":["post-530321","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-car","category-gmc","tag-114","tag-gmc","tag-yukon"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2005 GMC Yukon 4.8L Engine PCM Replacement and Programming 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\/2005-gmc-yukon-pcm-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2005 GMC Yukon 4.8L Engine PCM Replacement and Programming Guide - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"If your 2005 GMC Yukon has a 2-3 shift clunk or internal PCM codes like P0601, follow factory cautions to capture data before removal. 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