Toyota service near Diamond Bar, CA

From the owner: “In addition to offering complete auto repair services, we offer Temecula the best prices on tires and wheels. We've been in business for over 40 years and have ASE certified mechanics on staff.”

This company is great! They come to you! Got my oil changed while I was at work so I didn't have to leave my car at some shop all day. Ross Green

Came for oil change even though it was busy my car was finished in a timely manner very pleased bringing my car here for service.

AAA Auto club award winning Auto and light Truck repair shop , Serving the San Gabriel Valley for 36 years ASE technicians- Bosch Service center Star Smog station Brake and Lamp certification Vote Best Repair shop in area for last two years

I got my latest set of new (Michelin Defender) tires today along with alignment on my 2013 Prius. The car noise levels, steering, and ride are much improved. I can't say enough about the personal attention, excellent values and great service at Grand Prix. I highly recommend Grand Prix Tire for your automotive needs. Grand Prix is an honest and competent place of business. Jon D E. Monterey Park, CA 2013 Toyota Prius

I took my car for valve adjustments and was told that one of my piston was broken so I removed the head to find out that was not true. They took my $180 that could have been for the valve adjustment. Would not recommend this place. (657) 347- 6402. SMH

Last week I had the alternator replaced on my 1989 Ford LTD Crown Victoria and had this car smog checked. This was the second time I have had work done on this particular car but in the past they serviced a 1990 Lexus LS 400 that I used to own. I commend them for their integrity, the excellent quality of their work, and their reasonable prices. I highly recommend them. Ed C. Cypress, CA

It's too early to give any comments now let me drive few hundred miles then I'll be able to give any comments. So far everything seems to be OK.

I've had good luck taking my jeep here for servicing. The mechanics here were able to solve a problem that kept causing the engine light to constantly come on. I'd taken my jeep elsewhere in town and the problem was never resolved until I brought my car here. I would definitely recommend this shop. Staff is courteous, professional, and has kept my 15 year old vehicle running smoothly! I will definitely continue to have all work done on my car here at George's Sierra Shell. Nancy

From the owner: “We have one of the best selections of tires at the lowest prices in Riverside. We also offer complete repair services for your car or truck. From transmission repair to brake service, we do it all.”

BRILLIANT SERVICE! WE LOVE YOU SAM! Monica and Patrick! Monica Reed