GBU Auto Repair

This is the honest mechanic you’ve been looking for.
I need to thank Unilocalers for this one. I found this mechanic here and there was such great reviews, one particular by a female. It’s not always easy for females to be comfortable when dealing with auto issues. Based on those reviews, I decided to bring my car here after my regular mechanic moved his shop to San Bernardino.
I went 100% convinced that the undercarriage protective coverage thingy (yes thingy) for my engine needed to be replaced. I have a very low car and I keep pulling up over the cement parking space blocks.
They looked at my car and told me I didn’t need to replace it. They could bolt it back up, and it was perfectly fine. This would have been an easy way for them to make some money since I was so convinced it needed to be replaced. There are a lot of mechanics that would have taken advantage of that.
Everyone here was super friendly. I was very comfortable at this garage. The the owner and other mechanic are very nice. The owner’s wife is a sweet lady and kept me company.
This is absolutely my new mechanic. It’s one of those businesses that when you discover them you’re torn between wanting to tell the world and wanting to keep it a secret. I would hate for his availability to disappear, because if all the local cities knew about this guy there would be cars lined up down Route 66.
My only tip is to remember there 2 auto shops in this building. It almost looks like it’s one mechanic shop, but it’s not. GBU is the shop on the East end of the building. The left side when you’re facing the building.
THANK YOU!

Every car I bought from others I come here to give a check and the boss always do it fast and help me out. The guys are awesome!

Got oil change for my Nissan GT-​R. They checked tire pressure and made sure everything is good. Top notch service. Pretty nice spot with big parking lot! Very nice people as well.

Not exaggerating when I give these guys 5 stars. Immediately looked at my car, walked me through everything that needed to be done. Gave me an idea of what to keep an eye out for in the future but didn’t push anything.
And the best part, didn’t ignore me and talk to the male I was with instead. That’s a huge pet peeve of mine– when I’m at a mechanic’s (or something similar), but they ignore me and talk to my guy friend instead of respecting me as the person who is there for their business.
Fantastic service, fast and good prices. This is definitely my new mechanic.

I had been going to another auto repair shop in Glendora for many years. For the first few years I was happy with them. Then the management/​ownership changed. Every time I went there seemed to be new management. Each time I went for regular maintenance I was being told I needed all kinds of repairs. I really started to feel uncomfortable going to them. Apparently lots of other people feel the same way about that place too. It has horrible reviews. I checked Unilocal for a new place to take my truck to and found GBU. I went to have a leak fixed in January and I was very happy with the repair that Montri did. I knew going forward this was the repair shop for me. I couldn’t feel more comfortable Montri and Annie. I know my truck will be in good hands. A BIG thanks to Montri for my truck and to Annie for your great customer service.

I used to live in Glendora for 5 years and his auto repair shop was my go to place whenever I needed anything in my car. Montry has fixed my cars so many times and he always gave honest advice and a very reasonable price. There is no other mechanic I would trust more with my cars. I now live 55 miles away from his shop but love to go to his place for any major maintenance/​repair in my cars.

Montrey is a no-​nonsense Auto expert. A good god fearing person. He is a person whom I would trust for my car. Great work Montrey keep t up

Monti found that the oil filter housing was cracking causing a leak and ordered a new one, replaced this morning. Also the front grill wasn’t fitting properly and had fallen in and down… he skillfully popped it back into place… everyone else (maybe 5 different mechanics) ignored it! Thanks again Montri!

Wow Montri does it again, diagnosed and repaired problem on 1998 Nissan Altima and a recent fix on my 2002 Ford Escort, no B.S. just great service in a timely manner from wonderful people.

This place is awesome. Honest people.

Great service :) I do really want to appreciated :) I love this place, I will come back to get the service again :) give five stars for GBU.

The guys here are honest and affordable. What more can you ask for in a repair shop? Won’t be taking my Z or my gf’s car anywhere else.

I came to this shop because my car was over heated. This mechanic was the closest to where my car broke down and it was a weekend. He filled up my radiator with coolent at no charge.
I brought the car back to him in Monday and he replaced the water pump and the housing and a new thermostat at a very reasonable price!
On top of this great experience they give you a Starbucks gift card!
I highly recommend and will be using him in the future for any car repairs

My 99 Tahoe needed new front rotors and brakes. The repair was completed in record time, he found the serpentine belt was cracked and replaced it and completed a lube and oil change with what I believe was a VERY fair price.
We drove down the mountain from Big Bear and what used to be a bone jarring front end shaking when the brakes were applied is now smooth as a baby’s … well, you know what I mean.
Excellent work, low prices and most importantly… HONEST!

Pro: If I could, I would add more stars to this place. As everyone else says GBU are loyal and honest to their customers. Highly knowledgeable guy. Montri explain everything in detail even if you don’t understand the engine lingo. He will break everything down for you, tell you what they would recommend/​suggest.
Just awesome hard working folks. Amazing how theirs still honest loyal mechanics out there not trying to rip you off for an easy fix. I take all my Honda’s [four] to him.
I had my accord engine replaced, transmission to my van, etc. Montri will let you know if the repair is needed right away or wait until the next service.
Prices are good, very negotiable.
Cons: none.
Seriously these guys are more than 100% legit.
Thanks Montri and Annie for everything!

I’ve been coming to G.B.U. for my automotive services for years, since they first opened at their original location on Route 66 and Grand. I like the friendly services and reasonable prices. Montri is very honest. He never once tried to up sell me on any thing. There are times that you have to wait a little longer for your car due to their work load, but I would rather wait than having it done poorly some where else.
I now go to this place exclusively to get my cars serviced. I also recommended many of my friends to this place and they all ended up bringing all of their cars here.

This guy is great! I was recommended to him by a friend and he did a superb job! He knows a lot about all types of cars and works quickly. He gave me a very reasonable rate to have my timing belt and water pump replaced. My car runs great and I couldn’t be happier!

Always satisfied with service and the pricing is always fair and in the interest of both parties. Can’t deny the effort to help keep your car running as long as possible… would definitely recommend to friends

If you are looking for a good mechanic who is trustworthy and reliable, MONTRI is the MAN!
He diagnosis the problem fast and does not charge an arm and a leg either!
I feel very confident in taking all my cars here to get serviced and repaired.

I am so glad my sister found this repair shop. The first time I went to him was because I got a fix it ticket for my third brake light being out. I forgot about the ticket, so I was in a rush to get it done. I was worried because sometimes the light worked, other times it did not. He fixed it in a matter of minutes, and didn’t charge me a thing. I have returned for a transmission, oil changes, etc. He always charges less than he should, and he does an amazing job. I always refer people I know to him, which means I have to think very highly of him. Do yourself a favor and bring your car to him