{"id":7531,"date":"2026-06-09T05:28:56","date_gmt":"2026-06-09T05:28:56","guid":{"rendered":"http:\/\/australianholden.com\/?p=7531"},"modified":"2026-06-21T03:21:14","modified_gmt":"2026-06-21T03:21:14","slug":"vt-vx-vy-radiator-replacement-guide","status":"publish","type":"post","link":"https:\/\/australianholden.com\/index.php\/2026\/06\/09\/vt-vx-vy-radiator-replacement-guide\/","title":{"rendered":"VT, VX, VY Radiator Replacement Guide"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The radiator is one of the most important components in the cooling system of a VT, VX, or VY Commodore. Whether your vehicle is powered by an Ecotec V6, Supercharged V6, LS1 V8, or Alloytec engine, the radiator is responsible for removing heat from the coolant and maintaining safe engine operating temperatures.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As these Commodores age, radiator failures are becoming increasingly common. Plastic end tanks become brittle, cores become clogged, and leaks begin to develop. Replacing a worn radiator before it fails completely can prevent overheating and costly engine damage.<\/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;Radiator<\/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 : \"Radiator\",\nfu_ebay_query : \"VT Commodore Radiator\",\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\">Why Radiators Fail<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Most original radiators are now over 20 years old.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Common Causes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Plastic tank deterioration<\/li>\n\n\n\n<li>Heat cycling<\/li>\n\n\n\n<li>Corrosion<\/li>\n\n\n\n<li>Internal blockage<\/li>\n\n\n\n<li>Cooling system neglect<\/li>\n\n\n\n<li>Physical damage<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Over time, even well-maintained radiators eventually reach the end of their service life.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Signs Your Radiator Needs Replacing<\/h1>\n\n\n\n<h1 class=\"wp-block-heading\">1. Coolant Leaks<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">The most obvious sign.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Coolant on the ground<\/li>\n\n\n\n<li>Low coolant level<\/li>\n\n\n\n<li>Coolant smell after driving<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Leaks commonly occur around the plastic end tanks.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">2. Overheating<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">A failing radiator may lose cooling efficiency.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Temperature gauge rising<\/li>\n\n\n\n<li>Overheating in traffic<\/li>\n\n\n\n<li>Poor cooling performance<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">3. Cracked Plastic End Tanks<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">A very common VT\u2013VY issue.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Visible cracks<\/li>\n\n\n\n<li>Coolant seepage<\/li>\n\n\n\n<li>Sudden coolant loss<\/li>\n<\/ul>\n\n\n<div id=\"fu_ebay_1\"><!-- Presentation: cols = 4, rows = 2, slideshow = Manual, slides = 3, slideId = 1 --><div class=\"fu_ebay_results_container \">\n<h5 class=\"fu_ebay_results_title\" style=\"display: block !important;\">\n<a name=\"fu_slidetop_1\"><\/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;Overflow<\/h5>\nLoading&#8230;<\/div>\n<\/div>\n<script>\n<!--\nvar content_fu_ebay_1 = null;\nvar waitForDepends_fu_ebay_1 = setInterval(function () {\n  if (typeof jQuery !== \"undefined\") {\n  if (window.fu_is_bot_useragent !== undefined) {\n    clearInterval(waitForDepends_fu_ebay_1);\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_1 = jQuery(\"#fu_ebay_1\");\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 : \"Overflow\",\nfu_ebay_query : \"VX Commodore coolant overflow\",\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 : 1,\n\n      },\n      success : function( response ) {\n        content_fu_ebay_1.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\">4. Internal Blockages<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Over time, coolant passages can become restricted.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Poor cooling performance<\/li>\n\n\n\n<li>Hot running engine<\/li>\n\n\n\n<li>Uneven radiator temperatures<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">5. Corrosion<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Neglected coolant accelerates corrosion.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Symptoms<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Discoloured coolant<\/li>\n\n\n\n<li>Corroded radiator fins<\/li>\n\n\n\n<li>Cooling system contamination<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Tools Required<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Recommended Tools<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Socket set<\/li>\n\n\n\n<li>Screwdrivers<\/li>\n\n\n\n<li>Drain pan<\/li>\n\n\n\n<li>Hose clamp pliers<\/li>\n\n\n\n<li>Funnel<\/li>\n\n\n\n<li>Safety gloves<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Having all tools ready makes the job significantly easier.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Parts Recommended During Replacement<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Many cooling system components are easy to access while the radiator is removed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Consider Replacing<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Upper radiator hose<\/li>\n\n\n\n<li>Lower radiator hose<\/li>\n\n\n\n<li>Thermostat<\/li>\n\n\n\n<li>Hose clamps<\/li>\n\n\n\n<li>Radiator cap<\/li>\n\n\n\n<li>Coolant<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Preventative maintenance can save labour later.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Step 1: Allow Engine to Cool<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Never work on a hot cooling system.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Safety Warning<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Hot coolant can cause serious burns.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Allow the engine to cool completely before beginning.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Step 2: Drain the Cooling System<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Place a drain pan underneath the radiator.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Procedure<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Open radiator drain<\/li>\n\n\n\n<li>Remove radiator cap<\/li>\n\n\n\n<li>Allow coolant to drain completely<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Dispose of coolant responsibly.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Step 3: Remove Intake Components<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Depending on engine type, some intake ducting may need removal.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Typical Components<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Air intake pipe<\/li>\n\n\n\n<li>Airbox connections<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Step 4: Disconnect Radiator Hoses<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Remove:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Hoses<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Upper radiator hose<\/li>\n\n\n\n<li>Lower radiator hose<\/li>\n\n\n\n<li>Overflow hose<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Inspect hoses for deterioration.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Step 5: Disconnect Transmission Cooler Lines<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Automatic models have integrated transmission coolers.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Important<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Place rags beneath fittings to catch fluid.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Inspect lines for leaks or damage.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Step 6: Remove Thermo Fan Assembly<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Most VT\u2013VY Commodores use electric thermo fans.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Procedure<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Disconnect electrical connectors<\/li>\n\n\n\n<li>Remove retaining fasteners<\/li>\n\n\n\n<li>Lift fan assembly out<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Step 7: Remove Radiator Mounting Brackets<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Remove:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Upper retaining brackets<\/li>\n\n\n\n<li>Mounting hardware<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Keep fasteners organised for reinstallation.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Step 8: Remove Old Radiator<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Carefully lift the radiator upward.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Inspect<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mounting rubbers<\/li>\n\n\n\n<li>Support brackets<\/li>\n\n\n\n<li>Cooling fins<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Replace damaged mounting components.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Step 9: Install New Radiator<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Position the replacement radiator carefully.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ensure<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Correct fitment<\/li>\n\n\n\n<li>Proper mounting alignment<\/li>\n\n\n\n<li>No interference with fan assembly<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Step 10: Reinstall Components<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Reinstall:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Radiator brackets<\/li>\n\n\n\n<li>Fan assembly<\/li>\n\n\n\n<li>Hoses<\/li>\n\n\n\n<li>Transmission cooler lines<\/li>\n\n\n\n<li>Intake components<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Double-check all connections.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Step 11: Refill Cooling System<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Use the correct coolant mixture.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Recommended<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Quality long-life coolant<\/li>\n\n\n\n<li>Demineralised water<\/li>\n\n\n\n<li>50\/50 mix<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Follow Holden cooling system specifications.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Step 12: Bleed the Cooling System<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Air pockets can cause overheating.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Procedure<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Run engine<\/li>\n\n\n\n<li>Monitor coolant level<\/li>\n\n\n\n<li>Top up as required<\/li>\n\n\n\n<li>Ensure heater operates correctly<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Step 13: Check for Leaks<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Inspect:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Hose connections<\/li>\n\n\n\n<li>Drain plug<\/li>\n\n\n\n<li>Transmission cooler fittings<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Address any leaks immediately.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Common Mistakes During Radiator Replacement<\/h1>\n\n\n\n<h1 class=\"wp-block-heading\">Reusing Old Hoses<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Old hoses frequently fail shortly after radiator replacement.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Not Bleeding the Cooling System<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Air pockets can cause overheating.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Reusing Old Coolant<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Fresh coolant should always be used.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Forgetting Transmission Cooler Connections<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Can result in transmission fluid leaks.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Choosing the Right Replacement Radiator<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Standard Replacement<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Suitable for most daily-driven vehicles.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Heavy-Duty Radiator<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Ideal for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Towing<\/li>\n\n\n\n<li>Hot climates<\/li>\n\n\n\n<li>Modified engines<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Aluminium Performance Radiators<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Popular among LS1 owners.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Benefits<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Improved cooling efficiency<\/li>\n\n\n\n<li>Increased durability<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Common Radiator Problems After Installation<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Coolant Leaks<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Usually caused by loose clamps.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Overheating<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Typically due to trapped air.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Transmission Fluid Leaks<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Often linked to cooler line connections.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">How Long Does a Radiator Last?<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Typical lifespan:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Expected Life<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>10\u201320 years depending on maintenance<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Regular coolant changes help maximise lifespan.<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Preventing Future Radiator Problems<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Maintain Coolant Quality<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Corrosion protection is essential.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Replace Coolant Regularly<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Old coolant promotes internal deterioration.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Repair Small Leaks Early<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Prevents larger cooling system failures.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Keep Cooling Fins Clean<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Improves airflow and cooling efficiency.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Radiator replacement is a common maintenance task for VT, VX, and VY Commodores as original cooling system components continue to age. Fortunately, replacing a radiator is a relatively straightforward job that can dramatically improve cooling performance and reliability.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">By replacing worn hoses, using quality coolant, and properly bleeding the cooling system, owners can prevent overheating and extend the life of their Ecotec, Supercharged V6, LS1, or Alloytec engine for many 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>Best Coolants for Ecotec Engines<\/li>\n\n\n\n<li><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/09\/ecotec-commodore-intake-manifold-gasket-problems\/\" type=\"post\" id=\"7525\">Ecotec Intake Manifold Gasket Problems<\/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><a href=\"https:\/\/australianholden.com\/index.php\/2026\/06\/09\/vt-vx-vy-transmission-service-guide\/\" type=\"post\" id=\"7529\">VT, VX, VY Transmission Service Guide<\/a><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The radiator is one of the most important components in the cooling system of a VT, VX, or VY Commodore. Whether your vehicle is powered by an Ecotec V6, Supercharged V6, LS1 V8, or Alloytec engine, the radiator is responsible for removing heat from the coolant and maintaining safe engine operating temperatures. As these Commodores [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3457,"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-7531","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>VT, VX, VY Radiator Replacement Guide - Australian Holden<\/title>\n<meta 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