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
71 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, 4 mos

Industry Experience

38 yrs, 11 mos

Languages Spoken

English English

5.0

71 Reviews

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71 Reviews of John Duncsak

December 02, 2025

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Just purchased #14 vehicle from Curley GMC. Have always been well treated there. Love my sales girl and of course the service department is the BEST. More

by Patty
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Recommend Dealer
Yes

December 02, 2025

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What a great experience so far. Fank Mazza and the team a Jim Curley were a great pleasure to deal with. Totally professional and I highly recommend them to anyone looking for a new More

by Pellei193
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Yes

Other Employees Tagged: Frank Mazza

November 24, 2025

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Cynthia was excellent- no pressure sales and service on vehicle pick up day was exceptional More

by lachismar
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Recommend Dealer
Yes

Other Employees Tagged: Cynthia Rothschild

November 18, 2025

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Everyone at Jim Curley was extremely friendly and knowledgeable. Overall it was a pleasant experience. More

by erodru
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Yes

Other Employees Tagged: Cynthia Rothschild

November 05, 2025

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I drove from Brooklyn. A++ experience. Cynthia was terrific. Everyone was extremely friendly warm and inviting. Highly recommended! Thank you!! More

by michael.mehserle
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Yes

Other Employees Tagged: Cynthia Rothschild

November 04, 2025

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In 20 years of buying vehicles this was hands down THE BEST EXPERIENCE I have ever had. Everyone I worked with was professional, and worked hard to get me the best deal as fast and easily possible. I wi More

by ryan.zaharko
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Recommend Dealer
Yes

Other Employees Tagged: Cynthia Rothschild , Damen Krone

October 27, 2025

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My experience buying my car at this dealership was nothing short of amazing. Everyone was helpful, friendly and honest. Ed took his time and really showed he cared about his work and his customers. I More

by Omceachern
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Recommend Dealer
Yes

Other Employees Tagged: Edward Smuda

October 27, 2025

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Frank was extremely knowledgeable about the truck and really took the time to explain all the electronics to me. Just whole experience was great! Managers all thanked me and welcomed me to their family. More

by DK
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Recommend Dealer
Yes

Other Employees Tagged: Frank Mazza , Andrew Horochovic

October 13, 2025

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The experience buying a truck here was amazing. The process was easy and stress free. Frank was amazing, and great to communicate with. Answered all of my questions, and helped me out as much as More

by Kchrisville
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Recommend Dealer
Yes

Other Employees Tagged: Frank Mazza

October 09, 2025

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I had the best experience at Jim Curley with Frank Mazza with financing my car!!! I felt comfortable and my every need was met! Could not have asked for a better experience!! Thank you again Frank! More

by addy.reid101
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Recommend Dealer
Yes

Other Employees Tagged: Frank Mazza

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