{"product_id":"gm-genuine-parts-engine-coolant-temperature-sensor-213-4688-55591002-oe-fit-accurate-temp-signal","title":"GM GENUINE PARTS Engine Coolant Temperature Sensor 213-4688 (55591002) — OE Fit, Accurate Temp Signal","description":"\u003cstrong\u003eThe GM Genuine Parts 213-4688 (55591002) Engine Coolant Temperature Sensor is an original-equipment replacement that accurately reports engine temperature to your vehicle’s control systems for reliable performance.\u003c\/strong\u003e\n\n\u003cp\u003eThis GM-recommended coolant temperature sensor is built to the same specifications as the factory-installed unit, ensuring proper fit, signal accuracy, and durability for compatible GM vehicles. It measures coolant temperature and sends that data to the engine control module so fuel delivery and ignition timing can be adjusted. Choosing an OE sensor helps maintain factory calibration and avoid drivability issues caused by incorrect temperature readings.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this sensor affect engine performance?\u003c\/h3\u003e\n\u003cp\u003eThe sensor provides the engine control module with a real-time temperature signal, which the ECU uses to optimize fuel injection and ignition timing. A correct reading supports efficient combustion, smoother idle, and predictable throttle response. Replacing a faulty sensor often resolves rough idle, hard starting, and excess fuel consumption.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTransmits coolant temperature data to the ECU for air\/fuel adjustments\u003c\/li\u003e\n  \u003cli\u003eHelps maintain proper cold-start enrichment and warm-up strategy\u003c\/li\u003e\n  \u003cli\u003ePrevents erratic idle and poor fuel economy caused by false readings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this part fit my GM vehicle and match OEM standards?\u003c\/h3\u003e\n\u003cp\u003eYes — the 213-4688 (55591002) is manufactured to GM original equipment specifications to match the form, fit, and function of the factory unit. It’s supplied as a GM Genuine Parts item, which reduces the risk of fitment problems and simplifies installation. Always verify part number compatibility with your vehicle’s year, make, and model before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eGM OE specification for physical dimensions and electrical characteristics\u003c\/li\u003e\n  \u003cli\u003eDesigned to match factory connector and thread size for direct replacement\u003c\/li\u003e\n  \u003cli\u003eRecommended by GM as the correct replacement for certain applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I spot a failing coolant temperature sensor?\u003c\/h3\u003e\n\u003cp\u003eSymptoms include unstable idle, increased fuel consumption, difficulty starting when cold, and engine warning lights related to engine management. Electrical testing with a multimeter or scan tool can confirm signal anomalies. If the sensor’s resistance or voltage output is outside factory tolerances, replacement is advisable.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLook for check engine light codes related to coolant temp or sensor circuit\u003c\/li\u003e\n  \u003cli\u003eNoticeable changes in idle quality and cold-start behavior\u003c\/li\u003e\n  \u003cli\u003eUse diagnostic tools to verify sensor output before replacing other components\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I know about installation and maintenance?\u003c\/h3\u003e\n\u003cp\u003eInstallation is typically straightforward: drain a small amount of coolant, unplug the electrical connector, remove the old sensor, and fit the new unit with the appropriate sealant or gasket. Torque to manufacturer specifications and refill the cooling system, then purge air pockets as required. Routine inspection during coolant service helps avoid unexpected failures.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDrain or relieve coolant pressure to prevent fluid loss during removal\u003c\/li\u003e\n  \u003cli\u003eReplace with GM 213-4688 (55591002) for guaranteed compatibility\u003c\/li\u003e\n  \u003cli\u003eTighten to recommended torque and bleed the cooling system afterward\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The GM Genuine Parts 213-4688 (55591002) sensor is intended for owners and technicians who want an OE-grade replacement for GM vehicles that use this part number. It’s ideal for repairs where maintaining factory calibration and long-term reliability are priorities — particularly during routine cooling system service or when diagnosing engine management issues linked to temperature sensing. If you value correct fitment, consistent sensor output, and the confidence of a GM-recommended component, this sensor meets those needs.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the 213-4688 sensor an OEM part?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 213-4688 (55591002) is a GM Genuine Parts item built to original equipment specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I install this sensor myself?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Many owners can; basic tools and coolant drainage are required. Follow torque specs and bleed the cooling system afterward.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GM GENUINE PARTS","offers":[{"title":"Default Title","offer_id":48084389363870,"sku":"B00559NZXA","price":29.51,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/gm-genuine-parts-temperature-sensor-front-view.jpg?v=1785853181","url":"https:\/\/northtrailauto.ca\/products\/gm-genuine-parts-engine-coolant-temperature-sensor-213-4688-55591002-oe-fit-accurate-temp-signal","provider":"North Trail Auto","version":"1.0","type":"link"}