Chevrolet Malibu EGR Vacuum Modulator Replacement at your home or office.

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EGR Vacuum Modulator Replacement Service

How much does a EGR Vacuum Modulator Replacement cost?

On average, the cost for a Chevrolet Malibu EGR Vacuum Modulator Replacement is $180 with $40 for parts and $140 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2009 Chevrolet MalibuV6-3.5LService typeEGR Vacuum Modulator ReplacementEstimate$383.02Shop/Dealer Price$443.63 - $617.34
2007 Chevrolet MalibuV6-3.5LService typeEGR Vacuum Modulator ReplacementEstimate$374.01Shop/Dealer Price$432.85 - $605.24
2006 Chevrolet MalibuL4-2.2LService typeEGR Vacuum Modulator ReplacementEstimate$225.15Shop/Dealer Price$246.80 - $307.56
2003 Chevrolet MalibuV6-3.1LService typeEGR Vacuum Modulator ReplacementEstimate$374.01Shop/Dealer Price$432.87 - $605.28
2002 Chevrolet MalibuV6-3.1LService typeEGR Vacuum Modulator ReplacementEstimate$374.01Shop/Dealer Price$434.35 - $607.86
2005 Chevrolet MalibuV6-3.5LService typeEGR Vacuum Modulator ReplacementEstimate$374.01Shop/Dealer Price$433.01 - $605.53
2010 Chevrolet MalibuV6-3.5LService typeEGR Vacuum Modulator ReplacementEstimate$374.01Shop/Dealer Price$432.89 - $605.31
2008 Chevrolet MalibuL4-2.2LService typeEGR Vacuum Modulator ReplacementEstimate$225.15Shop/Dealer Price$246.80 - $307.56
Show example Chevrolet Malibu EGR Vacuum Modulator Replacement prices

What is the EGR Vacuum Modulator all about?

Your vehicle’s exhaust gas recirculation (EGR) system is used to reduce your engine’s emissions by lowering the combustion chamber temperature. This produces less nitrous oxides, and burns pollutants contained in the exhaust gas that are reintroduced into the intake manifold. If the EGR valve opens and allows exhaust gases into the intake, the engine runs more smoothly and efficiently. However, this is not the case at idle, when the engine needs the most vacuum for proper operation.

If the EGR valve opens at idle, you can experience a rough idle and possibly a knock. Engine power is negatively affected at low RPM’s. Engineers implemented a control that closes the EGR valve when the engine is running at lower RPM’s. The engine produces lower vacuum at lower engine speeds, so it’s natural that the control is modulated by the engine’s own vacuum. The EGR vacuum modulator is a diaphragm that closes when the engine vacuum drops to idle, and opens as soon as the vacuum increases. It’s also known as a vacuum modulated valve. If the EGR vacuum modulator is leaking vacuum, is blocked internally, or is leaking, the Check Engine light will come on and the engine may start to knock.

Keep in mind:

  • The EGR system assists in reducing engine emissions. An improperly operating EGR system can cause a smog test failure.
    • Vacuum hoses become brittle over time. Take precautions to not damage the vacuum hoses when working on the EGR system.

How it's done:

  • The EGR vacuum modulator is verified that it needs to be replaced. The engine top trim cover is removed to access the modulator.

  • The defective EGR vacuum modulator is removed from the bracket near the EGR valve and is disconnected.

  • The new EGR vacuum modulator is installed and reconnected.

  • The engine is started and the EGR vacuum modulator is tested for computer codes and operation.

  • The vehicle is road tested to ensure proper operation of the EGR vacuum modulator.

Our recommendation:

The EGR vacuum modulator does not have a replacement interval. It will likely need replacement at some time because it does contain a filter. It can be inspected any time a vacuum test needs to be performed on the engine vacuum. If the EGR vacuum modulator is deemed to be faulty, you will need to have it replaced by one of our expert technicians.

What common symptoms indicate you may need to replace the EGR Vacuum Modulator?

  • Check Engine light is on
  • Engine knock at idle
  • Engine idles rough

How important is this service?

The EGR system partly controls your vehicle’s emissions, and a faulty EGR vacuum modulator can cause your car to fail a smog test. In addition, your vehicle may not idle, or may knock at idle. It is recommended to replace a faulty EGR vacuum modulator as soon as possible.

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Johari

28 years of experience
21 reviews
Johari
28 years of experience
Chevrolet Malibu V6-3.5L - Oil Change - Hammond, Indiana
Cool guy. Very fast.

Noel

15 years of experience
42 reviews
Noel
15 years of experience
Chevrolet Malibu L4-2.4L - Brake Pads Replacement (Front) - Portage, Indiana
Not only was he very thorough but also he was extremely personable so it made for a very smooth and friendly experience. I would highly recommend his service.

David

11 years of experience
193 reviews
David
11 years of experience
Chevrolet Malibu L4-2.4L - Wheel Bearings Replacement (Passenger Side Front) - Philadelphia, Pennsylvania
He was fruendly, knowledgeable, willing to explain what he was doing and answer questions. He knew what he was doing and went right to work. Good mech

Daniel

12 years of experience
90 reviews
Daniel
12 years of experience
Chevrolet Malibu L4-2.4L - Windshield Wiper Motor Replacement (Front) - Chicago, Illinois
Very knowlegeable of the parts and functions of the car. Explained the inspection very well. Good recommendations.

Excellent Rating

(1,610)

Rating Summary
1,510
51
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25
1,510
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Number of Chevrolet Malibu services completed
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