We are Snowbirds from Alberta, travelling in a Class A motorhome. When we arrived in Hemet, we found that we had a manifold exhaust leak and started looking for a repair shop. We saw the good reviews for Alliance online and decided to give them a try. We're really glad that we did!!
David (the owner) gave us an estimate, we gave him a deposit for the parts, and within a matter of days, repairs got under way. He allowed us to park on the concrete pad next to the shop and provided us with electricity while the repairs were being done - saved us from having to stay in a hotel. Work was complete within a couple of days, and they did a great job of keeping the coach clean (had to access an area of the engine from within the bedroom). We are very happy with the guys (& gal) at Alliance for the great service they provided, and wouldn't hesitate to recommend them to anyone in need of service.

Just had braking system, leaf spring repaired on my horse trailer. These guys provided excellent and fast service! I will definitely go to them for any future needs and would highly recommend to anyone.

These guys rock!! I can't say enough about the high quality work they did. I am new to the diesel world with an older rig, so finding a good diesel shop was my priority. This was the fourth shop that I had my truck at (for minor repairs/work) and this one is by far the best. I drove from Santa Ana to Hemet to see what these guys can do, and was pleasantly surprised! The work they did was clean and the price was unbeatable. I had another (very well-known diesel shop) charge me $680 for the job, where Alliance Diesel got it done for under $200! The owner contacted me a few days after the job was done to make sure that everything is working properly (which it was). No other shop has done this. I would definitely recommend these guys for any job, big or small. Thanks a lot!