GDA Enterprises - Upland, California

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I have been going to Glenn for a least a decade + to service and repair my 2008 Toyota and a diesel 2016 Chevy truck. I found him by looking for a AAA approved mechanic. (He still is an approved mechanic by the way.). They both run great....and he only does what is necessary. For example, I just took my truck in for 90,000 service. It called for a radiator flush. Glenn said it wasn't necessary as it was done a year ago. Find a dealer or other mechanic that does that! I've never had to take a car back, which is a testament unto itself, but I do know Glenn would make it right if necessary. I've seen classic cars and late model cars. He does it all. I also had a '71 Volkswagon Transporter which he worked on for me as well. Glenn is in his early 60's, is a Master Mechanic, and has seen it all. Thank you Glenn for all the years of your great service.

Eric Hall

Glenn has been our mechanic for 25 years. He is a true top mechanic, one of the most knowledgeable in the area. He is very ethical and an expert diagnostician. Glenn is equally adept at maintaining and restoring older vehicles as he is working with the newest complex technologies for cars of all makes. Glenn’s expertise in diagnostics, especially, means that you will never be paying for unnecessary repairs. Glenn manages every detail of his business himself. He is prompt and responsive. When you call his office, he immediately answers the phone unless he is doing test drives or picking up parts. A simple example of Glenn’s thoroughness recently: We have a 2000 Toyota 4Runner we have owned since new. After 23 years, it is still in new condition in great part due to Glenn’s care of our vehicle. It recently was leaving oil spots on the driveway, so I asked Glenn to diagnose and repair the leak. The oil was coming from a power steering return hose and front differential breather hose, but, partially due to all the spilled oil on the chassis, it was hard to nail down the source. Glenn took the 4Runner to the self-serve car wash and completely cleaned all the leaked oil from the chassis and engine. He did not even charge me for the car wash. 25 years ago, when I found Glenn, I had grown sick and tired of sloppy mechanics who charge too much for shotgun diagnostics. I wanted a AAA approved mechanic close to home and found Glenn. I am so glad I did. We have had several older cars that Glenn has maintained for us since new and when we finally sold them, we got way over Bluebook for the cars due to the thorough maintenance history Glenn provided. I can’t recommend Glenn more enthusiastically, and this long review only contains a couple of examples of all the ways Glenn has gone above and beyond for us. I have some older reviews on Yelp with more details of Glenn’s reliability, expertise, and excellence.

Incidentally, Glenn has always been and continues to be a leader in professional organizations for mechanics. Part of that is he has made it a priority to support and mentor those who are seeking to learn and apprentice for careers as mechanics. I have met many of them. Haley, his current mentee, works daily with Glenn in the shop and is the best I have met to date.

Cathy Alix

I am so happy to have found GDA Automotive. Glenn and his crew are great! Thanks to Glenn my 15 year old car is practically brand new and I'm happy to continue driving it for as long as Glenn can fix it. I highly recommend GDA to anyone who owns a vehicle. Glenn is very thorough, efficient and honest. I won't be going anywhere else. Thanks Glenn!!!

Raymond Schneiders

GDA Enterprises is a "Top Notch" automobile repair location. My family have taken our vehicles to Glen for years. Every single repair Glen has done was done right the first time, every time! I first sought out GDA Enterprises because of their highest rating from Triple-AAA. One of our vehicles is approaching 200,000 miles, and runs great. I attribute the longevity to Glen's service, and attention to detail. Glen once found an inside wall tire defect that was so slight, I would not have seen it, and would have produced a roadway blow-out. You can trust Glen, and his prices are more than fair.

Denise Drake

I found GDA Enterprises by mistake, looking for another place to have my car smogged.
Glad I did! Glen Davis, the owner, makes you feel very welcome.
Glen and his staff are very knowledgeable and trusworhty. They will do the job right the first time and will not try and sell you on services that you don't need.
If you're looking for a place to have you vehicle serviced and want it done right the first time, then GDA Enterprises is the best, reliable place to go. And believe me, I have been to a lot of mechanics and dealers over the years.
I highly recommend GDA Enterprises.

Debbie Logan

I have found an honest, reliable mechanic in Glenn Davis and crew at GDA Enterprises. They do a great job with all my vehicles and I trust them completely!

Julie Miller

Our car started stalling at lights. Glenn was able to diagnose the problem even though there were no error codes in the computer and fix it. The car is back to running great again. We can always trust the Glenn will get it done right.

Aaron Lowinger

Glenn is honest and a great trouble shooter. He did a great job on my truck and the price was more than fair . I will go back for sure .