Justin Mummey
Justin Mummey at Heritage GMC Buick

Justin Mummey

Service Advisor

Heritage GMC Buick

930 E Interstate 30
Rockwall, TX 75087

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5.0
6 Reviews
5.0

6 Reviews

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6 Reviews of Justin Mummey

January 17, 2026

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Very good customer service and professional care. Always friendly greetings and quick response for service. More

by GWC3263
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Recommend Dealer
Yes

Other Employees Tagged: Steve Tolliver

January 02, 2026

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Friendly and accommodating with performing service. Pleasant service representatives who are helpful to provide understanding of questions I had. More

by jdwallac1956
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Yes

December 30, 2025

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Great service everyone very helpful love my car you guys are the best thanks Happy New Year More

by debanks77
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Yes

December 23, 2025

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Friendly service. Work performed timely with expected quality. Recommend Heritage for your service and sales need. More

by mattoleksy
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Yes

December 13, 2025

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I appreciate the work that was done on my Buick. They took care of the problem with my tire in a timely manner. More

by ralford0
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Recommend Dealer
Yes

December 02, 2025

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Justin has amazing customer service! ! He was so polite and made sure my car got right in and that everything that needed done got done. He’s a great asset to your service dept. More

by TYLER@LONESTARTRANSFER.COM
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Recommend Dealer
Yes

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