{"product_id":"high-output-alternator-for-gmc-canyon-2007-2012-2-9l-3-7l","title":"High Output Alternator for GMC Canyon (2007-2012) 2.9L 3.7L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Amp 250A Alternator for 2007-2012 GMC Canyon (GMT355)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The 250-amp high-output alternator replaces the factory 125-amp unit on the 2007-2012 GMC Canyon to eliminate severe voltage sag and supply stable charging current for high-draw electrical equipment.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC Canyon Charging Limitations\u003c\/h3\u003e\n\u003cp\u003eFactory charging systems on the first-generation \u003cstrong\u003eGMT355\u003c\/strong\u003e platform feature standard 125-amp Valeo units (such as \u003cstrong\u003e15884348\u003c\/strong\u003e and \u003cstrong\u003eTG12S047\u003c\/strong\u003e) calibrated strictly for baseline factory electronics. When users install high-draw accessories—including recovery winches, auxiliary LED light bars, aftermarket audio systems, or snow plow hydraulics—the OEM alternator operates at maximum capacity. This chronic over-amperage causes severe diode bridge heat soak, rotor winding degradation, and idle voltage dropping below 12.5V, which starves the PCM and leads to premature battery failure.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered for high-demand duty cycles, this 250-amp heavy-duty charging unit provides over double the output capacity of the stock unit. It features high-temperature copper stator windings, precision-balanced internal rotors, and heavy-duty rectifiers equipped with high-amp avalanche diodes that dissipate electrical and thermal spikes. Fabricated to OEM mounting specs for the Atlas \u003cstrong\u003eLLV\u003c\/strong\u003e 2.9L and \u003cstrong\u003eLLR\u003c\/strong\u003e 3.7L engine blocks, it delivers substantial current generation right off idle while protecting the primary vehicle harness from excessive voltage drop.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1x 250-Amp High Output Alternator\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2007-2012 GMC Canyon\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2.9L LLV, 3.7L LLR \/ GMT355\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e185 hp \/ 190 lb-ft (2.9L) | 242 hp \/ 242 lb-ft (3.7L)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e8159467650, 11148, 15884348, 15946765, 25925948, 8158843480, 420682, TG12S047, TG12S089, 2650682A, 2650682C, 11148N\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2007-2012 GMC Canyon 2.9L Inline-4 (LLV)\u003c\/li\u003e\n  \u003cli\u003e2007-2012 GMC Canyon 3.7L Inline-5 (LLR)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the GMT355 Canyon?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2007-2012 GMC Canyon equipped with the \u003cstrong\u003eLLV\u003c\/strong\u003e 2.9L or \u003cstrong\u003eLLR\u003c\/strong\u003e 3.7L engines. \u003cstrong\u003eDoes not fit models equipped with the 5.3L LH8\/LH9 V8 engine.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to upgrade the main charging wire?\u003c\/h4\u003e\n\u003cp\u003eYes, installing a high-amp \"Big 3\" 0-gauge charge cable directly from the alternator output stud to the battery positive terminal is required to safely transfer 250 amps without causing harness resistance.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Workhorse Standard\u003c\/h3\u003e\n\u003cp\u003eWhether navigating severe off-road trails with a recovery winch or running commercial job site accessories, this high-output charging unit keeps your \u003cstrong\u003eGMT355\u003c\/strong\u003e Canyon at an optimal 14.4 volts under sustained electrical loads.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67565888241912,"sku":"DS-EE4GQTUZX","price":337.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/high-output-alternator-for-gmc-canyon-2007-2012-2-9l-3-7l-1.jpg?v=1791077478","url":"https:\/\/performancechiptuning.com\/products\/high-output-alternator-for-gmc-canyon-2007-2012-2-9l-3-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}