John Duncsak
John Duncsak at Jim Curley Buick GMC

John Duncsak

Sales Manager

Jim Curley Buick GMC

1399 River Avenue
Lakewood, NJ 08701

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5.0
59 Reviews

I refer to myself as Big John. I went to Cal State Fullerton and started in the automotive industry in 1987. I began working at Jim Curley GMC IN 2022. I truly love the car business and consider my co-workers my friends. They are the heart of the dealership. I am originally from Linden, N.J. and have lived in Toms Rivers since 1997 .I lived in California for 6 1/2 years, and my first real job was at Disneyland. That is where I learned that customers always come first. I've been married to my wife Barbara since 1992 and have twins Nick and Kaitlyn. Both college grads and both enrolled getting their masters in education and business analytics. . I'm proud to say that my wife and my kids are everything to me . My success is their success . It feels great to be with the Curley family . Now 2 great locations! Jim Curley Buick GMC of Lakewood, NJ Jim Curley GMC of Keyport , NJ

Dealership Experience

3 yrs, 1 mo

Industry Experience

38 yrs, 8 mos

Languages Spoken

English English

5.0

59 Reviews

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59 Reviews of John Duncsak

August 30, 2025

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I had a great experience with Cynthia she was very helpful and I am very satisfied with my new car. Have been dealing with Jim Curley for many years and cars always satisfied. More

by Pattie
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Recommend Dealer
Yes

August 29, 2025

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Cynthia is very professional and was helpful with the entire process of purchasing my new car! Her communication was always timely and never pushy. The experience was very positive! More

by Mmackie44
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Recommend Dealer
Yes

August 20, 2025

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Great dealership! Cynthia and John were fantastic to work with. Got my dream truck in no time! They loved my dog, too! More

by Andrew
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Recommend Dealer
Yes

Other Employees Tagged: Cynthia Rothschild

August 19, 2025

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This was an out of state purchase and Frank handled it like a pro, we are so thankful for a great experience! More

by Stevierlucas
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Recommend Dealer
Yes

Other Employees Tagged: Frank Mazza

July 29, 2025

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Cynthia was absolutely amazing! Paperwork prepared, purchase was the most efficient and extremely fast. She was most helpful and patient with me. More

by T
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Recommend Dealer
Yes

Other Employees Tagged: Cynthia Rothschild , Andrew Horichovic

July 15, 2025

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ONCE AGAIN THANK YOU /THANK YOU / THANK YOU / THANK YOU... THERE ARE 4 THANK YOU BECAUSE 4 TH VEHICLE FROM JIM CURLEY GMC . 2023 BUICK ENCLAVE/ 2023 GMC YUKON / 2026 GMC TERRAIN AND 2025 GMC ACADIA . More

by BJDUNCSAK
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Recommend Dealer
Yes

Other Employees Tagged: Frank Mazza

July 03, 2025

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THANK YOU THANK YOU THANK YOU . REASON FOR 3 THANK YOUS BECAUSE MY 3 RD VEHICLE FROM JIM CURLEY GMC . FRANK MAZZA DELIVERED THE VEHICLE TO MY HOME AND SHOWED MY WIFE AND DAUGHTER More

by BJDUNCSAK
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Recommend Dealer
Yes

Other Employees Tagged: Frank Mazza

July 01, 2025

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Omg it was like night and day . After I dealt with another dealer before I stop to Jim curly. What a beautiful thing they greet us. The vehicle that I came to look at was ready for More

by Mchristy3166
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Recommend Dealer
Yes

Other Employees Tagged: Chris Cotten, Jack Merwede

June 22, 2025

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John was the sales advisor when my daughter was looking for a used truck and my daughter is so pleased with her truck. Straight away John was totally up front and transparent with pricing with a no nons More

by IAN.YATES
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Recommend Dealer
Yes

Other Employees Tagged: Frank Mazza

June 04, 2025

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Employee Rating

I had a great experience with big John and Cynthia . Made the whole process so simple . They made me feel like family , big John is a great guy More

by chefwayne77
Recommend Dealer
Yes

Other Employees Tagged: Cynthia Rothschild

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