Chevrolet Avalanche 1500 Engine Coolant Temperature (ECT) Sensor Replacement at your home or office.

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Engine Coolant Temperature (ECT) Sensor Replacement Service

How much does a Engine Coolant Temperature (ECT) Sensor Replacement cost?

On average, the cost for a Chevrolet Avalanche 1500 Engine Coolant Temperature (ECT) Sensor Replacement is $167 with $72 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2002 Chevrolet Avalanche 1500V8-5.3LService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$258.95Shop/Dealer Price$304.94 - $420.41
2004 Chevrolet Avalanche 1500V8-5.3LService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$238.95Shop/Dealer Price$284.96 - $400.44
2006 Chevrolet Avalanche 1500V8-5.3LService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$238.95Shop/Dealer Price$284.96 - $400.44
2003 Chevrolet Avalanche 1500V8-5.3LService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$238.95Shop/Dealer Price$284.94 - $400.40
2005 Chevrolet Avalanche 1500V8-5.3LService typeEngine Coolant Temperature (ECT) Sensor ReplacementEstimate$238.95Shop/Dealer Price$284.97 - $400.47
Show example Chevrolet Avalanche 1500 Engine Coolant Temperature (ECT) Sensor Replacement prices

What is the Thermostatic Vacuum Sensor all about?

When the engine is started cold, it takes several minutes to reach operating temperature which is when the engine is running most efficiently. Vacuum is created whenever the engine is running and can be used to control one or more auxiliary vehicle options such as heater controls or cruise control, and is also used to control emissions systems such as exhaust gas recirculation, or EGR. It also controls vacuum for the distributor to advance or retard the spark, ensuring the engine runs as smooth as possible. Vacuum is supplied to these systems through hoses routed in the engine compartment. If engine vacuum was supplied to the EGR system when the engine was still cold, the engine would stumble or stall, and would do so until it reached operating temperature.

The thermostatic vacuum sensor is mounted in the intake manifold and uses coolant temperature to determine when the engine has reached operating temperature. Once it has warmed up, the thermostatic vacuum sensor opens and allows vacuum to flow through it to the vacuum-operated functions it controls. If the thermostatic vacuum sensor fails in the open position, it can be difficult to start the engine when it is cold and will run poorly until it warms up. If the vacuum sensor fails when it is closed, it may start properly but will lose power and run poorly at warm temperatures. It will burn fuel poorly, creating higher exhaust emissions that may fail a smog check. The engine light likely will come on when the vacuum sensor fails.

Keep in mind:

  • The thermostatic vacuum sensor is part of an emissions control system and is required to operate wherever emissions or smog regulations are enforced.

  • Any leaks in the vacuum system can mimic the symptoms of a failed thermostatic vacuum sensor. Diagnosis by a professional mechanic is the best way to confirm failure.

How it's done:

  • The vehicle battery is disconnected and the air cleaner top is removed for access
  • The defective thermostatic vacuum sensor is removed
  • The new thermostatic vacuum sensor is installed and the battery is reconnected
  • The engine is started and the thermostatic vacuum sensor is checked for operation
  • The air cleaner is reinstalled, repair is verified and the vehicle is road tested for proper operation

What common symptoms indicate you may need to replace the Thermostatic Vacuum Sensor?

  • The Check Engine light is on
  • Engine runs poorly on initial startup until the engine warms up
  • Engine stumbles, stalls, or has a lack of power when hot
  • Vehicle fails smog check

How important is this service?

The thermostatic vacuum sensor is an important part of the vacuum system that allows the engine to run smoothly and efficiently. If it is not working properly, your engine can stall or not start and you can be stranded in an inconvenient or dangerous situation. Have it checked and replaced by a licensed mechanic as soon as possible.

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Luis

18 years of experience
321 reviews
Luis
18 years of experience
Chevrolet Avalanche 1500 V8-5.3L - Pre-purchase Car Inspection - Hillside, New Jersey
Luis was great, arrived on time, performed inspection, identified a few minor issues that I was able to have the dealer resolve before I drove off the lot. Luis was very professional and patient in explaining his findings.

Johnny

33 years of experience
267 reviews
Johnny
33 years of experience
Chevrolet Avalanche 1500 V8-5.3L - Check Engine Light is on Inspection - Lincoln, California
Johnny was on time. Very friendly. Found our problem and gave us a quote.

Gregory

31 years of experience
383 reviews
Gregory
31 years of experience
Chevrolet Avalanche 1500 V8-5.3L - Mass Airflow Sensor - Littleton, Colorado
Gregory was so friendly and efficient and knowledgeable. I would request him if ever in need of service again.

Duane

25 years of experience
512 reviews
Duane
25 years of experience
Chevrolet Avalanche 1500 V8-5.3L - Oil Change - Carlsbad, California
Duane showed up right on time to my office. He performed the works leaving no signs that work had been done there. Made recommendations and provided quotes for those I was interested in before he left. Very Professional!

Excellent Rating

(186)

Rating Summary
177
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1
1
177
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1
1
Number of Chevrolet Avalanche 1500 services completed
2046+
services done by our mechanics
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