A Guide to the Engine Coolant Temperature Sensor for the 2009-2013 GMC Canyon
Solve common engine problems like poor fuel economy and incorrect temperature readings in your GMC Canyon.
- A failing ECT sensor commonly causes a Check Engine Light with codes P0117, P0118, or P0128.
- For best results and to avoid replacing it again soon, choose a quality brand like ACDelco or Delphi.
- This is a simple and inexpensive DIY repair that most owners can complete in under 30 minutes.
- Symptoms like poor gas mileage, rough idle, and an incorrect temperature gauge are strong indicators of a bad sensor.
Is your GMC Canyon running rough or getting bad gas mileage?
A failing Engine Coolant Temperature (ECT) sensor could be the culprit. This sensor reports the engine's temperature to the vehicle's computer. When it fails, it can cause a variety of problems, from a simple Check Engine Light to poor performance and engine overheating. Understanding the symptoms and choosing a quality replacement part can save you time and money.
Symptoms of a Failing ECT Sensor
When the ECT sensor sends incorrect information, or no information at all, your truck's computer gets confused. This can lead to several noticeable issues:
- Check Engine Light: This is often the first sign. The most common trouble codes associated with a bad ECT sensor are P0117 (signal indicates engine is too hot), P0118 (signal indicates engine is too cold), and P0128 (engine is not warming up as expected).
- Poor Fuel Economy: If the sensor wrongly tells the computer the engine is cold, the computer will enrich the fuel mixture, causing you to use more gas than necessary.
- Black Smoke from Exhaust: A very rich fuel mixture can lead to unburnt fuel exiting through the tailpipe as black smoke.
- Engine Overheating: A faulty sensor might not signal the computer to turn on the cooling fans when needed, leading to overheating.
- Erratic Temperature Gauge: The gauge on your dashboard may read incorrectly, showing cold when the engine is hot, or vice-versa.
- Rough Idle or Hard Starts: The wrong fuel mixture can make the engine run poorly, especially when idling or during a cold start.
No Recalls or TSBs Found
Our research found no specific recalls or Technical Service Bulletins (TSBs) from the NHTSA for the engine coolant temperature sensor on the 2009-2013 GMC Canyon. Failures are typically due to normal wear and tear.
Choosing the Right Aftermarket Sensor
For a critical electronic sensor, brand quality matters. While many budget options exist, choosing a reputable brand can prevent you from having to do the job twice. Here’s a breakdown of available brands:
- Tier 1 - OEM & Premium Brands (ACDelco, Delphi): ACDelco is the original GM parts brand, offering a direct replacement for the factory part. Delphi is a major OEM supplier known for high-quality electronics that often match original parts in performance and reliability. For peace of mind, these are your best choices.
- Tier 2 - Reputable Aftermarket (Standard Ignition, NGK, Walker Products, Hella, Holstein): These are well-known brands in the aftermarket industry. They produce reliable sensors that offer a good balance of quality and price. They are a solid choice if an OEM part isn't available or you're looking for a quality alternative.
- Tier 3 - Budget Brands (Facet, Four Seasons, True Tech, etc.): These brands offer the lowest price point. While tempting, the quality can be inconsistent for electronic sensors. They may be suitable for a temporary fix or if budget is the primary concern, but be aware of a higher potential for premature failure.
Pro Tip: Spend a Little More for Quality
Owner reviews frequently suggest that paying a few extra dollars for an ACDelco or Delphi sensor is worth it to avoid the frustration of a cheap sensor failing within a few weeks or months.
Estimated Replacement Costs
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket Sensor | $16.81 - $43.11 |
| New OEM Sensor (ACDelco) | $25 - $50 |
| Shop Labor | $60 - $120 |
| Total Estimated Cost (Shop) | $85 - $170 |
Note: Costs are estimates and can vary by location and repair shop. The part is simple to replace, so labor should be minimal.
Frequently Asked Questions
Where is the ECT sensor located on the 2009-2013 GMC Canyon?
The ECT sensor is typically threaded into the cylinder head or engine block within a coolant passage. On the L4 and L5 engines in these trucks, it is generally found on the driver's side of the engine, accessible from the top after removing the plastic engine cover.
Can I replace the ECT sensor myself?
Yes, this is a very DIY-friendly job. It requires basic tools to remove the engine cover, unplug the electrical connector, and use a deep socket wrench to unscrew the old sensor. Have the new sensor ready to install quickly to minimize coolant loss. The entire process usually takes less than 30 minutes.
What happens if I don't replace a bad ECT sensor?
Ignoring a bad ECT sensor can lead to continuously poor fuel economy, failed emissions tests, and poor engine performance. In a worst-case scenario, if the sensor fails to report an overheating condition, it could lead to severe engine damage.
Is an ACDelco sensor the same as the original factory part?
Yes. ACDelco is General Motors' official parts brand. Choosing an ACDelco "GM Original Equipment" part ensures you are getting the same component that your vehicle was built with, guaranteeing perfect fit and function.
Technical Specifications
OEM Part Numbers: 12601050 213-4514 15326386 12608814 15369305
The sensor is a 2-prong male terminal thermistor, typically with an M12 thread size, that installs into a coolant passage on the engine block or cylinder head.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- GMC Canyon: