Rose Auto Clinic & Muffler Services at 5657 West Holt Boulevard, Montclair, California.

Outstanding service and a down to earth staff, would absolutely recommend to anyone.

Our RV (1991 Class-C Chevy G-30) broke down in the middle of the night on Highway 10. Luckily we were close enough to this shop. They took our RV in as soon as we arrived in the morning, did an inspection(took the wheels/axle out), and provided a quick and cheap market price quote for the services.
We had to overhaul the whole brake system from the top down (it was long overdue, since we first drove it). We changed the Master cylinder, rotor, brake pads, new fluids, hoses and new seals. All with premium product, but at sale price. They worked on the RV all day while we waited on the comfy waiting room. Very cool people to hang out with, Carlos, our technician was awesome, and guided us through the whole rebuild.
No surprise they been in biz for 55 years! 5 out 5 recommend!