{"id":524399,"date":"2026-07-16T02:23:38","date_gmt":"2026-07-16T06:23:38","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=524399"},"modified":"2026-07-19T11:16:30","modified_gmt":"2026-07-19T15:16:30","slug":"2006-chevrolet-hhr-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2006-chevrolet-hhr-pcm-replacement-guide\/","title":{"rendered":"2006 Chevrolet HHR Engine Computer PCM ECM Replacement Guide"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2006 Chevrolet HHR Engine Computer PCM ECM Replacement Guide<\/h1>\n<p class=\"hero-subtitle\">The engine control module (ECM) in your HHR is the primary computer managing the 2.2L engine&#8217;s fuel injection, ignition timing, and emissions systems. Internal electrical failures within this module often trigger diagnostic codes and drivability issues.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>The 2006 HHR uses an ECM that manages the 2.2L engine&#8217;s critical functions<\/li>\n<li>Module internal codes like P0601 indicate internal memory failures requiring replacement<\/li>\n<li>Factory procedure requires capturing existing ECM data before removal<\/li>\n<li>Control module damage can occur from battery voltage contact with the metal case<\/li>\n<li>Flagship One replacement units arrive pre-programmed with your VIN<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>If your 2006 Chevrolet HHR is experiencing starting problems, stalling, or illumination of the check engine light with specific diagnostic codes, the engine control module may be the culprit. The ECM serves as the brain of your vehicle&#8217;s powertrain, and when internal circuitry fails, the result is often frustrating drivability symptoms that cannot be resolved with simple repairs. This guide explains what the engine control module does, where it is located, the replacement process, and what you need to know about programming after installation. Understanding these facts helps you make informed decisions about repair options for your HHR.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2006 Chevrolet HHR<\/h2>\n<p>The engine control module in your 2006 Chevrolet HHR is the central computer responsible for managing the 2.2L four-cylinder engine&#8217;s operational parameters. This module controls fuel injection pulse width, ignition timing advance, idle air control, and the vehicle&#8217;s emissions control systems. The ECM continuously monitors sensor inputs from the mass air flow, coolant temperature, throttle position, and oxygen sensors to make real-time adjustments for optimal performance and fuel efficiency. When the internal processor or memory within this control unit fails, the result is often a vehicle that will not start, runs poorly, or sets multiple diagnostic trouble codes. Replacement engine computers for the HHR must be properly matched to your specific vehicle to ensure compatibility with the 2.2L powertrain and emissions configuration.<\/p>\n<p>Flagship One keeps <a href=\"https:\/\/www.fs1inc.com\/gm\/chevrolet-pcm-ecm-ecu-engine-computer\/hhr-engine-computers.html\">Chevrolet HHR replacement engine computers<\/a> in stock for exactly this failure pattern.<\/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 your 2006 Chevrolet HHR is typically located in the engine compartment, often mounted to the firewall or near the battery tray area. Access requires removing surrounding components to reach the unit. The book time for ECM replacement is 0.9 hours according to labor guides, with an additional 0.5 hours for the relearn procedure after installation. During replacement, technicians must exercise caution as the factory caution warns that control module damage may result when the metal case contacts battery voltage. This means avoiding contact with battery booster cables or battery chargers during the procedure. After the new module is secured, the mounting hardware should be torqued to specification and all electrical connections verified secure.<\/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\/2006-chevrolet-hhr-pcm-service-figure.webp\" alt=\"2006 Chevrolet HHR PCM location diagram\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">From the factory PCM removal procedure for the 2006 Chevrolet HHR.<\/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 2006 Chevrolet HHR<\/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>Remove<\/b> the engine control module (ECM)\/transaxle control module (TCM) cover.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Disconnect<\/b> the body harness electrical connector from the ECM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Disconnect<\/b> the engine harness electrical connector from the ECM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Slide<\/b> the ECM into the ECM\/TCM bracket until the retaining tabs engage the.<\/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\">0.9 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\">0.9 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<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Programming Requirements After Replacement<\/h2>\n<p>The factory procedure requires that before removing the engine control module, a scan tool must be used to capture the existing ECM data. This captured data then needs to be restored into the new ECM during installation. This data transfer process ensures that vehicle-specific calibration information,\u9632\u76d7 PATS security data, and emission-related settings are properly transferred to the replacement unit. Without this step, the vehicle may not start or may run poorly. Flagship One units arrive VIN-programmed, meaning the replacement engine computer is pre-loaded with your specific vehicle identification number and required calibration data, eliminating the need for you to perform the data capture and restore procedure that the factory recommends.<\/p>\n<p>Every <a href=\"https:\/\/www.fs1inc.com\/2006-chevrolet-hhr-2-2l-engine-computer-pcm-ecm-ecu-programmed-plug-play.html\">VIN-programmed replacement unit<\/a> from Flagship One arrives with these steps already completed.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>When the engine control module in your 2006 Chevrolet HHR begins to fail, several symptoms commonly appear. A no-start condition where the engine cranks but will not run is frequently reported when the ECM loses its internal programming. Stalling and rough idle often occur as the module can no longer properly control fuel delivery or ignition timing. Misfire codes may set across multiple cylinders, and in some cases the scan tool may not communicate with the vehicle at all. Transmission shifting issues can also result since the ECM often shares data with the transmission control module. The check engine light typically illuminates with module-internal codes such as <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\">P0601<\/a>, which indicates internal memory read\/write failure within the control unit.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2006 Chevrolet HHR<\/h2>\n<p>Your 2006 Chevrolet HHR may display several module-internal diagnostic trouble codes when the engine control module experiences internal failures. These codes indicate problems within the control module&#8217;s own circuitry rather than faults in external sensors or wiring. The codes documented for this vehicle include P0601 through P0607, P060E, P062F, P0641, P0651, P1600, P1621, P1627, P1681, and P1683. Each of these codes points to specific internal module functions that have failed and typically require replacement of the ECM to resolve.<\/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-p060e-internal-control-module-throttle-position-performance\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P060E<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p060e-internal-control-module-throttle-position-performance\/\" 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-p060e-internal-control-module-throttle-position-performance\/\" style=\"color:#0563C1\"><b><u>Full P060E 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-p0641-sensor-reference-voltage-circuitopen\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0641<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0641-sensor-reference-voltage-circuitopen\/\" 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-p0641-sensor-reference-voltage-circuitopen\/\" style=\"color:#0563C1\"><b><u>Full P0641 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-p0651-sensor-reference-voltage-b-circuitopen\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0651<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0651-sensor-reference-voltage-b-circuitopen\/\" 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-p0651-sensor-reference-voltage-b-circuitopen\/\" style=\"color:#0563C1\"><b><u>Full P0651 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<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Factory Service Bulletins Worth Knowing<\/h2>\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>05-06-04-060<\/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<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">&mdash;<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Special Coverage Adjustment &#8211; Engine Control Module &#8211; Emission Related Reprogramming &#8211; (Sep 9, <\/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\">&mdash;<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">No Communication With Emission Test Equipment &#8211; Reprogram ECM &#8211; (Dec 17, 2008)<\/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 2006 Chevrolet HHR<\/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 by ensuring the alternator output is within specification\u2014alternator overcharging can send voltage spikes to the ECM<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Keep all ECM electrical connections clean and dry by inspecting connector seals during other service work<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid jump-starting your vehicle incorrectly\u2014connect booster cables to the chassis rather than directly to the module<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address diagnostic trouble codes promptly rather than ignoring warning lights, as ongoing electrical stress can damage internal module circuits<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">When servicing the battery or using battery chargers, ensure the ECM metal case does not contact battery voltage as specified in the factory caution<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>Will my 2006 Chevrolet HHR run after I replace the ECM if I don&#8217;t have the scan tool data?<\/h3>\n<p>Without the captured ECM data, your vehicle may experience starting issues or run poorly. The factory procedure specifically requires data capture before removal. Flagship One units come VIN-programmed with your vehicle&#8217;s specific calibration, which typically resolves this concern.<\/p>\n<h3>Can a failing ECM cause my HHR to stall while driving?<\/h3>\n<p>Yes, a failing engine control module can cause stalling because it loses the ability to manage fuel delivery and ignition timing properly. This often happens suddenly and may be accompanied by multiple diagnostic trouble codes setting simultaneously.<\/p>\n<h3>Why does my scan tool not communicate with my 2006 HHR?<\/h3>\n<p>When the ECM experiences internal failure, communication with the scan tool may be lost entirely. This is a common symptom of module-internal codes like P0601 or P0602, indicating the control unit&#8217;s processor or memory has failed and requires replacement.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>When your 2006 Chevrolet HHR requires engine control module replacement, you have options between repair and replacement. A rebuilt or refurbished unit may be available, though these often lack the proper VIN programming and may require additional programming fees. A new or certified replacement unit from Flagship One arrives pre-programmed with your specific VIN and calibration data, saving you the complexity of the factory data capture procedure. Consider your long-term reliability needs and budget when making this decision for your HHR.<\/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\/gmtypeE\/gm-pcm-typeE-1.jpg\" alt=\"Refurbished VIN-programmed PCM for the 2006 Chevrolet HHR\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">A refurbished, VIN-programmed replacement PCM for the 2006 Chevrolet HHR from Flagship One.<\/figcaption><\/figure>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2006-chevrolet-hhr-2-2l-engine-computer-pcm-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2006 Chevrolet HHR<\/b><\/a> with a lifetime warranty, free shipping and no core charge. The full <a href=\"https:\/\/www.fs1inc.com\/gm\/chevrolet-pcm-ecm-ecu-engine-computer\/hhr-engine-computers.html\">Chevrolet HHR 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 2006 Chevrolet HHR is a critical component that manages your 2.2L engine&#8217;s performance and emissions. When internal failures occur, replacement is typically the only solution. Understanding the factory procedure, programming requirements, and symptoms helps ensure you make the right choice for your vehicle. Whether you choose a new replacement or explore other options, addressing ECM issues promptly restores reliable operation to your HHR.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Engine control module failure in your 2006 Chevrolet HHR may cause no-start, stalling, or check engine lights. Factory caution requires data capture before replacement.<\/p>\n","protected":false},"author":1,"featured_media":525381,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[258,274],"tags":[393,67,579],"class_list":["post-524399","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-car","category-chevrolet","tag-393","tag-chevrolet","tag-hhr"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2006 Chevrolet HHR Engine Computer PCM 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\/2006-chevrolet-hhr-pcm-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2006 Chevrolet HHR Engine Computer PCM ECM Replacement Guide - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"Engine control module failure in your 2006 Chevrolet HHR may cause no-start, stalling, or check engine lights. 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