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Groulx Automotive
GMC Dealer
Today 9:00 am – 6:00 pm
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Groulx Automotive

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Need brake repair for your Buick, GMC or other models? Not sure if its time to get new brakes? Check out the Groulx Automotive site, we can help you understand what is going with your vehicle!
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Groulx Automotive

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We know you are busy during the week so we open our dealership on Saturday's for your convenience. View our inventory online at anytime then stop by on Saturday and take your favorite models for a test drive!
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Where r u located
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Groulx Automotive

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Are you in the market for a brand new +Buick or +GMC? Browse the inventory at Groulx Automotive online today! Please feel free to give us a call or email us if you have any questions. 
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Groulx Automotive

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If you are looking for a new or used truck in Monroe then visit Groulx Automotive! You can browse all of our inventory online today.
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Groulx Automotive

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Have you been shopping around for a new pickup truck? Consider checking out a Sierra model at Groulx Automotive. We have a great selection a new models and excellent deals. Browse our inventory online then stop by for a test drive.
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Contact Information
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15435 S Dixie Hwy Monroe, MI 48161
15435 South Dixie HighwayUSMichiganMonroe48161
GMC Dealer, Buick DealerToday 9:00 am – 6:00 pm
Monday 9:00 am – 8:00 pmTuesday 9:00 am – 6:00 pmWednesday 9:00 am – 6:00 pmThursday 9:00 am – 8:00 pmFriday 9:00 am – 6:00 pmSaturday 9:00 am – 2:00 pmSunday Closed

Groulx Automotive is your source for new and used GMC trucks and Buick cars.  Whether you're looking for a dependable truck like the GMC Sierra or new GMC Canyon, or a luxury car like the great Buick LaCrosse, at Groux Autmotive, we have exactly what you're looking for.

Come visit us today!
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1 review
"...the service department could get my tires in the next day, put them on..."
"...Drive it to another GM Dealer to Get a second opinion..."
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Debra Deszell
a month ago
I appreciated that the service department could get my tires in the next day, put them on and balance them in a timely manner. Groulx even balanced a tire they didn't even mount free of charge. They provided a ride for me to work and picked me up right on time to get my car. Great service all the way around.
Brenda Musson
a year ago
I bought a used car from Groulx and I can say I loved the genuine and small town atmosphere of the business. Gary was absolutely wonderful at his job and Joel was great! I have dealt with other dealerships in my life but this was the most positive experience I have ever had! Thank you for your expertise and friendly people you have there.
Chad Masserant
2 years ago
I would like to thank Jennnifer H. in the service department and including the service personel.You all did a fast and great job working on my truck,Will come here again, thanks Chad P.S. I will only own American owned cars and Trucks
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Lori Giedlin
7 months ago
The service members and salesperson are excellent to deal with and are very willing to meet the needs of the customer. I feel they go above and beyond which is why I would recommend this dealership to anyone!
M House
2 years ago
they are a big scamming dealership if you work for gm , they take yur personal ID and use it to sell cars , never will i ever do busniness there again , and I'am not the only 1 this has happened too!!!
A Google User
4 years ago
A letter i sent to Groulx Automotive : On the night of February 8th I Drop off a 1999 Pontiac Sunfire to get diagnoses about a non-starting issue the car was having. On February 9th I talk to a Doug in the Service Department that what the problem is that the “PCM”/ “ECM” Was not communicating with the Instrument Cluster and that the Ignition Key Cylinder was not communicating as well. It was recommended that I replace all 3 at a cost of around $1,400. My complaint is what happened when I pick my car up. I sent My Father In law to Pick up the car than me up and Drive it to another GM Dealer to Get a second opinion ( you have to understand given the cost of the “Necessary Repair”) about 2 miles down the Road there was a Large POP! And then the engine became very loud and had no horsepower and was running very Rough. We pulled over and discovered that the Number 2 Spark plug was out of its socket but sill inside the spark plug wire iam assuming that Your Technician did this to test for spark but did not fasten the spark plug in securely, since I did’t have a Socket and Socket Wrench in the car I had to walk down in negative degree weather to “Autozone” to buy tools to re-fasten a spark plug your Tech Should have done in the first place. But that’s Not why am Upset, it’s that Second onion I got that made me upset. Come to find out that I had a lose connection at my “PCM/ECM” and a chafed Wire in my Dash which caused the Symptom’s I was having a $67.89 Fix. My car now is running Great. So after being a dedicated Groulx Automotive customer since 2004 this letter is to inform you that I will No longer come to Groulx Automotive any more for my Pontiac Dealership Needs for my 96,97,99,04 Sunfires as well as My parents and my In-Laws all who have Bought a Pontiac Vibe form you in 2008 they will be seeking there dealership needs elsewhere.
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