{"id":7523,"date":"2026-06-09T05:56:58","date_gmt":"2026-06-09T05:56:58","guid":{"rendered":"http:\/\/australianholden.com\/?p=7523"},"modified":"2026-06-21T03:16:29","modified_gmt":"2026-06-21T03:16:29","slug":"vs-bcm-fault-guide","status":"publish","type":"post","link":"https:\/\/australianholden.com\/index.php\/2026\/06\/09\/vs-bcm-fault-guide\/","title":{"rendered":"VS BCM Fault Guide"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The Body Control Module (BCM) is one of the most important electronic components in the VS Commodore. It acts as the central controller for many of the vehicle&#8217;s electrical systems, including the security system, central locking, interior lighting, power windows, warning chimes, and communication between various modules.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As VS Commodores continue to age, BCM-related faults are becoming increasingly common. Because the BCM controls so many functions, a single fault can create multiple seemingly unrelated electrical problems.<\/p>\n\n\n<div id=\"fu_ebay_0\"><!-- Presentation: cols = 4, rows = 2, slideshow = Manual, slides = 3, slideId = 0 --><div class=\"fu_ebay_results_container \">\n<h5 class=\"fu_ebay_results_title\" style=\"display: block !important;\">\n<a name=\"fu_slidetop_0\"><\/a><a href=\"https:\/\/www.ebay.com.au\/?mkcid=1&#038;mkrid=705-53470-19255-0&#038;siteid=15&#038;campid=5339152561&#038;customid=5339151688&#038;toolid=10049&#038;mkevt=1\" class=\"fu_ebay\" style=\"display:inline !important;\" rel=\"nofollow\" target=\"_blank\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/australianholden.com\/wp-content\/plugins\/fast-ebay-listings\/US\/Right_Now_108x45.gif?resize=108%2C45&#038;ssl=1\" style=\"border:0;display:block !important;\" width=\"108\" height=\"45\" alt=\"Right Now on eBay\"\/><\/a>&nbsp;BCM<\/h5>\nLoading&#8230;<\/div>\n<\/div>\n<script>\n<!--\nvar content_fu_ebay_0 = null;\nvar waitForDepends_fu_ebay_0 = setInterval(function () {\n  if (typeof jQuery !== \"undefined\") {\n  if (window.fu_is_bot_useragent !== undefined) {\n    clearInterval(waitForDepends_fu_ebay_0);\n    if (typeof jQuery.ajax == \"undefined\") {\n      console.log(\"Fast eBay Listings: jQuery.ajax missing. Are you using jQuery.Slim that doesn't include ajax? \");\n      return;\n    }\n    if (fu_is_bot_useragent) return;\n    content_fu_ebay_0 = jQuery(\"#fu_ebay_0\");\n    jQuery(document).ready(jQuery.ajax({\n      type : \"post\",\n      url : \"https:\/\/australianholden.com\/wp-admin\/admin-ajax.php\",\n      data : {\n        action : \"fu_ebay_load_search\",\nfuDisableAPICache : 0,\nfuTraceLogging : 0,\nebay_country : \"AU\",\nfu_ebay_customId : \"\",\nfu_ebay_widget : 0,\nfu_ebay_picwidth : 225,\nfu_ebay_arrangement : 0,\nfu_ebay_title : \"BCM\",\nfu_ebay_query : \"VS Commodore BCM\",\nfu_ebay_searchInDesc : 0,\nfu_ebay_searchLocation : \"Internationally\",\nfu_ebay_pickupPostcode : \"\",\nfu_ebay_pickupRadius : 0,\nfu_ebay_sort : \"BestMatch\",\nfu_ebay_categoryIds : \"6030\",\nfu_ebay_sellers : \"\",\nfu_ebay_sellerType : \"\",\nfu_ebay_buyingOptions : \"\",\nfu_ebay_conditionOptions : \"\",\nfu_ebay_minPrice : 0,\nfu_ebay_maxPrice : 0,\nfu_ebay_minBids : 0,\nfu_ebay_maxBids : 0,\nfu_cols : 4,\nfu_rows : 2,\nfu_slideshow : \"Manual\",\nfu_slides : 3,\nfu_slideId : 0,\n\n      },\n      success : function( response ) {\n        content_fu_ebay_0.html( response );\n      },\n      error: function(e) {\n        console.log(\"Fast eBay Listings: deferred loading error: \" + e);\n      }\n    }));\n  }}\n}, 10);\n\/\/-->\n<\/script>\n\n\n\n<h1 class=\"wp-block-heading\">What Does the BCM Do?<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The BCM is essentially the vehicle&#8217;s body electronics computer.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">BCM Functions<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Security and immobiliser control<\/li>\n\n\n\n<li>Central locking<\/li>\n\n\n\n<li>Remote keyless entry<\/li>\n\n\n\n<li>Interior lighting<\/li>\n\n\n\n<li>Power window operation<\/li>\n\n\n\n<li>Courtesy lights<\/li>\n\n\n\n<li>Warning chimes<\/li>\n\n\n\n<li>Communication with ECU<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">When the BCM develops a fault, multiple systems may stop working correctly.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Why BCM Problems Occur<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Most BCM failures are caused by age.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Common Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Internal electronic deterioration<\/li>\n\n\n\n<li>Moisture damage<\/li>\n\n\n\n<li>Connector corrosion<\/li>\n\n\n\n<li>Voltage spikes<\/li>\n\n\n\n<li>Poor earth connections<\/li>\n\n\n\n<li>Wiring faults<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Many original BCM units are now over 25 years old.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Common BCM Fault Symptoms<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Warning Signs<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>No-start condition<\/li>\n\n\n\n<li>Security system problems<\/li>\n\n\n\n<li>Central locking failure<\/li>\n\n\n\n<li>Battery drain<\/li>\n\n\n\n<li>Power window issues<\/li>\n\n\n\n<li>Interior light faults<\/li>\n\n\n\n<li>Random electrical problems<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Multiple symptoms occurring together often indicate BCM involvement.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">1. Immobiliser No-Start Problems<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">One of the most common VS BCM complaints.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Engine cranks but won&#8217;t start<\/li>\n\n\n\n<li>Security light remains illuminated<\/li>\n\n\n\n<li>Intermittent starting issues<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>BCM communication failure<\/li>\n\n\n\n<li>Immobiliser faults<\/li>\n\n\n\n<li>Key head or transponder issues<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Because the BCM communicates with the engine management system, immobiliser faults can completely disable the vehicle.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Typical Repair<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Check key and immobiliser operation<\/li>\n\n\n\n<li>Inspect BCM communication circuits<\/li>\n\n\n\n<li>Replace faulty BCM if required<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">2. Central Locking Failure<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">A common VS electrical problem.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Doors won&#8217;t lock<\/li>\n\n\n\n<li>Doors won&#8217;t unlock<\/li>\n\n\n\n<li>Remote entry stops working<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>BCM output failure<\/li>\n\n\n\n<li>Faulty door actuators<\/li>\n\n\n\n<li>Wiring issues<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Typical Repair<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Always test door actuators before replacing the BCM.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">3. Battery Drain Issues<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">One of the most frustrating BCM-related faults.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Flat battery after sitting overnight<\/li>\n\n\n\n<li>Excessive parasitic current draw<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>BCM failing to enter sleep mode<\/li>\n\n\n\n<li>Internal electronic faults<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Typical Repair<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Perform parasitic draw testing and isolate BCM circuits.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">4. Interior Light Problems<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The BCM controls courtesy light operation.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Interior lights stay on<\/li>\n\n\n\n<li>Lights fail to operate<\/li>\n\n\n\n<li>Delayed switching problems<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>BCM fault<\/li>\n\n\n\n<li>Door switch failure<\/li>\n\n\n\n<li>Wiring issues<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">5. Power Window Faults<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The BCM assists with window control functions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Windows stop operating<\/li>\n\n\n\n<li>Multiple windows affected<\/li>\n\n\n\n<li>Intermittent operation<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>BCM output failure<\/li>\n\n\n\n<li>Faulty relays<\/li>\n\n\n\n<li>Wiring faults<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">6. Remote Keyless Entry Problems<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Common in ageing VS models.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Remote stops working<\/li>\n\n\n\n<li>Inconsistent operation<\/li>\n\n\n\n<li>Central locking issues<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>BCM receiver fault<\/li>\n\n\n\n<li>Key transmitter failure<\/li>\n\n\n\n<li>Wiring problems<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">7. Random Alarm Activation<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">A common complaint among VS owners.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Alarm sounds unexpectedly<\/li>\n\n\n\n<li>Security system behaves erratically<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>BCM input faults<\/li>\n\n\n\n<li>Door switch issues<\/li>\n\n\n\n<li>Wiring problems<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">8. Warning Chime Issues<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The BCM controls various warning functions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>No warning chime<\/li>\n\n\n\n<li>Continuous chime<\/li>\n\n\n\n<li>Incorrect warnings<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Internal BCM failure<\/li>\n\n\n\n<li>Communication faults<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">9. Connector Corrosion<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">One of the most overlooked problems.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Intermittent electrical faults<\/li>\n\n\n\n<li>Random BCM behaviour<\/li>\n\n\n\n<li>Multiple systems affected<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Moisture ingress<\/li>\n\n\n\n<li>Oxidised terminals<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Typical Repair<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Clean connectors and repair damaged terminals.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">10. Poor Earth Connections<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Often mistaken for BCM failure.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Random electrical issues<\/li>\n\n\n\n<li>BCM communication faults<\/li>\n\n\n\n<li>Intermittent operation<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Corroded earth points<\/li>\n\n\n\n<li>Loose ground connections<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Poor earths should always be checked before replacing a BCM.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">How to Diagnose BCM Problems<\/h1>\n\n\n\n<h1 class=\"wp-block-heading\">Step 1: Check Battery and Charging System<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Low voltage can create BCM-related symptoms.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Check<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Battery condition<\/li>\n\n\n\n<li>Alternator output<\/li>\n\n\n\n<li>Charging voltage<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Step 2: Inspect BCM Connectors<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Look for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Corrosion<\/li>\n\n\n\n<li>Moisture<\/li>\n\n\n\n<li>Damaged terminals<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Step 3: Check Earth Points<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Verify all major earth connections.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Step 4: Test Related Components<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Before blaming the BCM, inspect:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Door actuators<\/li>\n\n\n\n<li>Window switches<\/li>\n\n\n\n<li>Relays<\/li>\n\n\n\n<li>Immobiliser components<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Step 5: Scan for Fault Codes<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Diagnostic tools may reveal BCM communication faults.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">BCM Location in a VS Commodore<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The BCM is mounted beneath the dashboard area.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Inspect<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>BCM housing<\/li>\n\n\n\n<li>Wiring harness<\/li>\n\n\n\n<li>Connector plugs<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Access varies slightly depending on model specification.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Common Misdiagnoses<\/h1>\n\n\n\n<h1 class=\"wp-block-heading\">Faulty Door Actuators<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Often blamed on the BCM.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Flat Batteries<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Can create BCM-like symptoms.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Immobiliser Issues<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">May be caused by keys rather than the BCM itself.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Earth Faults<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">A major cause of false BCM diagnoses.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">BCM Replacement Considerations<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Replacing a VS BCM requires careful planning.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Important Considerations<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Immobiliser compatibility<\/li>\n\n\n\n<li>Security system matching<\/li>\n\n\n\n<li>Vehicle configuration<\/li>\n\n\n\n<li>Key programming requirements<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Using an incorrect BCM can create further problems.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Repair vs Replacement<\/h1>\n\n\n\n<h1 class=\"wp-block-heading\">BCM Repair<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Advantages<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Retains original module<\/li>\n\n\n\n<li>May be less expensive<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Disadvantages<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Limited repair options<\/li>\n\n\n\n<li>Not all faults are repairable<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">BCM Replacement<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Advantages<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reliable long-term solution<\/li>\n\n\n\n<li>Eliminates internal faults<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Disadvantages<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Matching and programming requirements<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Preventing BCM Problems<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Maintain Battery Health<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Protects electronic components.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Fix Water Leaks Promptly<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Moisture is a major BCM killer.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Keep Connectors Clean<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Reduces corrosion-related faults.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Maintain Earth Connections<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Improves overall electrical reliability.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Warning Signs of Imminent BCM Failure<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Increasing electrical glitches<\/li>\n\n\n\n<li>Intermittent no-start issues<\/li>\n\n\n\n<li>Random alarm activation<\/li>\n\n\n\n<li>Persistent battery drain<\/li>\n\n\n\n<li>Multiple systems failing together<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Early diagnosis often prevents larger electrical problems.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The BCM is at the heart of the VS Commodore&#8217;s electrical system and plays a critical role in vehicle security, central locking, interior electronics, and module communication. As these vehicles age, BCM faults are becoming more common due to internal component wear, connector corrosion, and electrical system deterioration.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Because BCM failures can mimic many other electrical faults, thorough diagnosis is essential before replacement. In many cases, poor earths, damaged wiring, or faulty accessories are the true cause of the problem.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">With proper testing and maintenance, most BCM-related issues can be accurately diagnosed and repaired, helping keep VS Commodores reliable for years to come.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Related Articles<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/10\/vn-vp-vr-vs-no-start-guide\/\" type=\"post\" id=\"7500\">VN, VP, VR, VS No-Start Guide<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/10\/vn-vp-vr-vs-starting-problems-guide\/\" type=\"post\" id=\"7487\">VS Commodore Starting Problems Guide<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/09\/common-ecotec-engine-problems\/\" type=\"post\" id=\"7518\">Common Ecotec Engine Problems<\/a><\/li>\n\n\n\n<li>Best Scan Tools for Holden Owners<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Body Control Module (BCM) is one of the most important electronic components in the VS Commodore. It acts as the central controller for many of the vehicle&#8217;s electrical systems, including the security system, central locking, interior lighting, power windows, warning chimes, and communication between various modules. As VS Commodores continue to age, BCM-related faults [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3461,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[1],"tags":[],"class_list":["post-7523","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>VS BCM Fault Guide - Australian Holden<\/title>\n<meta name=\"description\" content=\"The Body Control Module (BCM) is one of the most important electronic components in the VS Commodore.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/09\/vs-bcm-fault-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"VS BCM Fault Guide - 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