1.0Flagship One Bloghttps://www.fs1inc.com/blogFlagshipOnehttps://www.fs1inc.com/blog/author/flagship1inc/rich600338<blockquote class="wp-embedded-content" data-secret="fmwhnb5GF6"><a href="https://www.fs1inc.com/blog/2011-buick-regal-pcm-replacement-guide/">2011 Buick Regal PCM/ECM Replacement: Symptoms, Codes, & Fix</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.fs1inc.com/blog/2011-buick-regal-pcm-replacement-guide/embed/#?secret=fmwhnb5GF6" width="600" height="338" title="“2011 Buick Regal PCM/ECM Replacement: Symptoms, Codes, & Fix” — Flagship One Blog" data-secret="fmwhnb5GF6" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://www.fs1inc.com/blog/wp-includes/js/wp-embed.min.js </script> https://www.fs1inc.com/blog/wp-content/uploads/2026/07/2011-buick-regal-pcm-service-figure.webp960653If your 2011 Buick Regal 2.4L has rough idle or poor driveability, the ECM may need reprogramming or replacement. Always turn ignition off when servicing connectors to avoid damage. Learn symptoms, codes, and solutions.