Buick Rendezvous 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 Buick Rendezvous EGR Vacuum Modulator Replacement is $209 with $114 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2005 Buick RendezvousV6-3.4LService typeEGR Vacuum Modulator ReplacementEstimate$343.01Shop/Dealer Price$410.02 - $588.53
2006 Buick RendezvousV6-3.6LService typeEGR Vacuum Modulator ReplacementEstimate$323.01Shop/Dealer Price$390.03 - $568.56
2002 Buick RendezvousV6-3.4LService typeEGR Vacuum Modulator ReplacementEstimate$323.01Shop/Dealer Price$390.03 - $568.56
2004 Buick RendezvousV6-3.6LService typeEGR Vacuum Modulator ReplacementEstimate$323.01Shop/Dealer Price$390.01 - $568.52
2004 Buick RendezvousV6-3.4LService typeEGR Vacuum Modulator ReplacementEstimate$323.01Shop/Dealer Price$390.05 - $568.59
2006 Buick RendezvousV6-3.5LService typeEGR Vacuum Modulator ReplacementEstimate$323.01Shop/Dealer Price$390.03 - $568.56
2003 Buick RendezvousV6-3.4LService typeEGR Vacuum Modulator ReplacementEstimate$328.01Shop/Dealer Price$394.90 - $573.32
2007 Buick RendezvousV6-3.5LService typeEGR Vacuum Modulator ReplacementEstimate$328.01Shop/Dealer Price$395.27 - $573.98
Show example Buick Rendezvous 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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Excellent Rating

(205)

Rating Summary
192
5
1
2
5
192
5
1
2
5

Jim

12 years of experience
58 reviews
Jim
12 years of experience
Buick Rendezvous V6-3.4L - Alternator - Roselle, Illinois
I Have to say my experience with Your Mechanic was less than perfect. I did not know what to expect since it was my first time using this company. I received my quote and agreed to it, made my appointment with Franky O. The earliest one was a week off, so I took it. Waited the week and the morning my mechanic was to come received a text saying he was on his way. Then received a text saying it was cancelled and I would have to reschedule. Angry that I had already waited I reluctantly agreed to reschedule with a new mechanic for that Monday since it was Easter weekend and that was the earliest they could get me in and offered a discount for my inconvenience. Thinking everything was set I went on with my day. Then received a call saying there would have to be a price increase for my part. Angered I called to talk to them and received Mitch in costumer service, after explaining again the situation and the feeling that I shouldn't be paying more for the part since they should have already had the part from the morning they were supposed to put it in was ridiculous. Mitch then agreed to lower the price another $10 from the new quote with the discount. It was still more than my original but since I had already waited a week and needed my car and it was lower than going to a shop, I agreed. Here I will tell Mitch that I am sorry that he had to deal with me. I was less than friendly. Jim Steil showed up exactly on time at 7am and put the new part in my car and had it all done by 8:30am. I was extremely pleased with Jim and his work. He was polite and turned my experience with this company around. Honestly this company can thank Jim for making me think that it was all worth it. They said this was very unusual and never really happens, but if it were not for the excellent work Jim and his friendly nature I probably would never call them again. I really hope this was a one time thing because the price was very good and my mechanic was very nice and professional. THANK YOU JIM STEIL!!

James

30 years of experience
925 reviews
James
30 years of experience
Buick Rendezvous V6-3.4L - Electric Problems - Oviedo, Florida
James showed up on time was very friendly and helpful with all of our questions, diagnosed our problem. Fixed and gave us a very thorough assessment of other items to be attentive to.

Estevan

12 years of experience
41 reviews
Estevan
12 years of experience
Buick Rendezvous V6-3.4L - Fuel Pressure Regulator - Murrieta, California
First time used YourMechanic Inc. Estevans came on time and can be trusted. I will recommend the site to all my family member. Job well done!! Thank you so much.

Jose

16 years of experience
324 reviews
Jose
16 years of experience
Buick Rendezvous V6-3.4L - Car is overheating - Fort Lauderdale, Florida
Professional

Excellent Rating

(205)

Rating Summary
192
5
1
2
5
192
5
1
2
5
Number of Buick Rendezvous services completed
2255+
services done by our mechanics
TOTAL NUMBER OF EXPERT Buick MECHANICS
800+
experts on our platform

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