I had D&J Diagnostics come out to my house to replace the battery in my car. It was so dead I…read morecouldn't even jump it, and having a mobile mechanic work on it was much easier than trying to arrange a tow to a mechanic's shop. Jesse did a great job replacing the battery. In fact, the first one tested low in charge, so he swapped it out for another one. Then, it turned out my auxiliary battery also needed to be replaced, which he also did. Throughout the process, the business was polite and their secretary, Red, kept in constant communication with me via text message to confirm appointments and update me on Jesse's ETA in the field. The pricing was clear and reasonable, and everything was put back immaculately in my car after the repair (the batteries sit under the front passenger seat). I wouldn't hesitate to recommend D&J to others here in the High Desert!

We couldn't be more grateful to Tech who helped rescue two stray kittens from inside our vehicle…read moreengine area. He was punctual, focused on task, professional and quick to remove belly pan, extract kittens and reinstall belly pan. Price to save these babies was worth the price. My husband and I would definitely contact this company for future car repairs but, hopefully, no more cat rescues.

I had a very disappointing experience with this mechanic. Not only was the repair completed over 3…read morehours past the original ETA, but the pricing and service were extremely questionable. I was charged $285 for an airline repair plus 2 hours of labor, which seems excessive for the work performed. When I politely questioned the pricing, the mechanic responded unprofessionally and even threatened to remove the hoses, which felt completely inappropriate and intimidating. To make matters worse, they initially said they would not accept credit cards, but then suddenly did -- only to add a last-minute 5% credit card fee that was never disclosed upfront. Between the unexpected extra charge and the overall inflated billing, it felt like I was being double charged. Overall, the lack of transparency, poor communication, and unprofessional behavior made this a frustrating experience. I would strongly recommend getting clear written estimates and confirming payment terms beforehand, or considering a different shop altogether.

Very bad experience could not get an explanation on why my invoice was so high and asked them how…read moredo you price the parts and service call charging double for parts and labor was insane ive learned my lesson to research more for company reviews will never work with this company again 1 star just cause they were quick to respond.

By all means if you are an owner operator please avoid this place at all cost. This place has gone…read moredown hill. They no longer care about your business. No communication what so ever they will let your truck sit for days till they decide to pull it into a bay just to check and advise. Holly is bitter and can care less about you, you're just another obnoxious driver to her and will disrespectfully tell you that she has no information about your equipment just to get you off the phone! Find an independent mechanic they'll treat you 100% better than this sh!t hole!

Dropped off my 2021 579 for a check engine light James and holly were great and took care of all my…read moreconcerns from start to finish would definitely recommend this location

Experienced mechanic work there and 24 hrs open. Genuine price charged for engine rebuild.read more

From the owner: From minor tweaks to major overhauls, we have the expertise to address all issues facing your…read moretransport vehicles.

Hi I sent my driver to get an annual trailer inspection. Trailer is a 2022 with no problems. So…read morethey charge my driver $130 for just a trailer inspection. This is the hesperia location. The price didn't seem right to me so I called your Fontana location and they said $75. This sounds reasonable. I also called a local business "west coast fleet services" and they quoted me at $45. My question and complaint is how and why is hesperia zippy charging $130 for ONLY a trailer annual inspection?

I brought my truck at 8 am they told me it will be ready that same day, 2 PM I told them to…read moreplease go ahead and do somenthing he said " I don't like to work under pressure, (BTW they were just walking around talking on the phone the whole morning) 6pm I went back my truck was there with key inside they left I call them to find out the status of my truck no body answered the phone, horrible service I dont recomended

Great service very nice understood exactly what was needed very professional will recommend to…read moreanyone and everyone

From the owner: Specialties We…read moreproudly serve the San Bernardino area with expert maintenance and repair for 18-wheeler trucks and trailers. Our certified technicians are available 24/7 for roadside assistance and fast, effective solutions to keep your fleet on the road. We specialize in: Truck & Trailer Repair: Comprehensive repairs for all makes and models. DPF Cleaning: Efficient diesel particulate filter cleaning for better performance. Engine Rebuilds: Complete engine overhauls to extend reliability. A/C Service & Repair: Keep your cab comfortable with quality air conditioning service. Suspension Work: Inspections and repairs for a smoother, safer ride. Preventive Maintenance: Routine checkups to avoid costly breakdowns. Tire Services: Tire replacement, repair, and balancing. Diagnostic Services: State-of-the-art tools to diagnose and fix issues fast. Turbo Services: Turbo repairs and replacements for maximum efficiency. Our team is dedicated to minimizing your downtime and ensuring every job is completed right. From routine maintenance to emergency repairs, trust us for dependable and professional truck service in San Bernardino.

horrible service by one of the mechanics. They up charge for everything play the let's throw parts…read moreat it until it's fix. DO NOT RECOMMEND

I have The worst experience they charged me $400 for one hour labor theyre going to rip you off…read moredon't ever go there