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Performance Buick GMC
Cedar Knolls, NJ
1,558 Reviews
Performance Buick GMC is your trusted Buick, GMC dealership in Cedar Knolls, NJ and the reason why our loyal customers from Morristown, Parsippany, and Randolph keep coming back. From the time you enter our showroom when you service with us, you can expect to be treated like family, each and every visit. We offer an extensive new and pre-owned inventory, as well as our competitive lease specials, finance options and expert auto service. We are dedicated to providing exceptional customer service to Hanover County and being an integral part of our Cedar Knolls, NJ community. We look forward to seeing you soon!
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This rating includes all dealership reviews, with more weight given to recent reviews.
Sales Price Transparency
Service Price Transparency
Trade-in Experience
Purchase Time
Finance Experience
Workmanship
Service Time
Service Communication
Hours
Sales/Showroom
Monday 9:00 AM - 8:00 PM
Tuesday 9:00 AM - 8:00 PM
Wednesday 9:00 AM - 8:00 PM
Thursday 9:00 AM - 8:00 PM
Friday 9:00 AM - 8:00 PM
Saturday 9:00 AM - 6:00 PM
Sunday Closed
Service
Monday 9:00 AM - 8:00 PM
Tuesday 9:00 AM - 8:00 PM
Wednesday 9:00 AM - 8:00 PM
Thursday 9:00 AM - 8:00 PM
Friday 9:00 AM - 8:00 PM
Saturday 9:00 AM - 6:00 PM
Sunday Closed
Parts
Monday 9:00 AM - 8:00 PM
Tuesday 9:00 AM - 8:00 PM
Wednesday 9:00 AM - 8:00 PM
Thursday 9:00 AM - 8:00 PM
Friday 9:00 AM - 8:00 PM
Saturday 9:00 AM - 6:00 PM
Sunday Closed
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Showing 1,558 reviews
July 28, 2025
Came in with an issue and it was quickly taken care, thank you John for you great service! thank you John for you great service! More
by ANNABELLE.PALAGYI
Verified Customer
July 27, 2025
Service manager had to take over my service because the service advisor was incompetent. Made a scheduled appointment online for Monday. Dropped vehicle off Sunday afternoon in night drop. I was contacted service advisor was incompetent. Made a scheduled appointment online for Monday. Dropped vehicle off Sunday afternoon in night drop. I was contacted on Monday morning first thing (great). I was told that my 2023 GMC with 20,000 miles might not be covered under warranty and explained the $200 diagnostic charge if the problem is deemed not warranted. It was brought in for a check engine light. So the relevance of focusing on how I might have to pay for service over actually paying attention to my problem was very disappointing. I did not hear back from the dealer until I called on Wednesday to check status. Again, the service advisor was not prepared to give me a proper update on my vehicle. And if I could express what was actually conveyed on our phone conversation you would be stunned. Finally on Thursday I was told my water pump needed replacing. I dropped the vehicle off on Monday! 4 days to diagnose! If I knew it was going to take this long I could have made better arrangements for transportation or reserving a loaner (which I was told by my service advisor was a two week wait). On Friday I had to once again call the dealer to see if my truck would be available by the weekend. Keep in mind, I was called ONCE that Monday morning initially. The dealer NEVER ONCE called me to give me any updates or status. Finally after repeat calls and emails the service manager called me back and I was able to pick my truck up Friday night. WOW! I considered not writing a review at all because the service manager did a great job covering the endless mistakes of the service writer until I got home and realized after all this they install dealer advertising license plate frames! I didn’t buy from this dealer, I most likely won’t use them again and I do not like the look of advertising frames on any of my vehicles. To put them on without permission is not appropriate. More
by AMSCHMIDT600
Employees Worked With
July 26, 2025
Excellent service from John getting my vehicle ready on time for my vacation… staff and scheduling was also great time for my vacation… staff and scheduling was also great More
by JALBA418
July 26, 2025
John worked to make sure that I knew everything about why certain work was proposed, and recommended upgrading to GM (vs AC Delco), presenting and comparing pricing of both. certain work was proposed, and recommended upgrading to GM (vs AC Delco), presenting and comparing pricing of both. More
by NEAL.ASHINSKY
Employees Worked With
John Barker
July 25, 2025
Went to pick up my plates. Wilberto, the salesman promptly met me and installed the plates himself. I'm very satisfied with the way Wilberto treated me. Thank you!! Wilberto, the salesman promptly met me and installed the plates himself. I'm very satisfied with the way Wilberto treated me. Thank you!! More
by Ivmart54
Employees Worked With
Wilberto Lopez, sales person
July 24, 2025
7:30 am appointment for oil change, arrived early, wasn’t let in till 7:30, ok service hours start at this time, 2 1/2 hours waited for just an oil change, thought this was a little too long let in till 7:30, ok service hours start at this time, 2 1/2 hours waited for just an oil change, thought this was a little too long More
by TLANCASTER100
Employees Worked With
July 22, 2025
Will is amazing and very professional. Highly recommended. The manager was also very efficient and professional Highly recommended. The manager was also very efficient and professional More
by Ruben
Employees Worked With
