I need service and maintenance for my Cummins standby generator with ATS. I've tried over and over to request service. Friday I waited 48 minutes on hold at Cummins San Leandro. I simply don't get it! read more

This facility failed to tighten a fuel line on a recall for a generator on my camper van. After 2 years of taking it to them it would not run past 15 minutes they lied to me the whole time. I finally had someone else look at it and it had two fuel leaks and still has a small vacuum leak somewhere in the system. Cummins needs to fix it! read more

Just talked to Bob in service, told him I was having some issues with my generator, instead of trying to reel me in and charge me for a repair, he first suggested a couple of things we can do to fix the problem on our own. If that didn't work than he had a plan B for us. That is what I call an honest person/service dept., and not a hungry shop ready to rip your head off. Even if we needed a repair, it didn't seem that costly, but since we are from out of town, it was very nice of him to suggest a couple of things first. Much appreciated Bob, you have my business from now on. Sam read more

Thankfully Cummins in San Leandro, fixed my generator! We are glad to be back on the road again! Shout out to Bob who works there. he was very helpful. Kept us updated and was patient with our a little dogs Liz. read more

Cummins Sales and Service - Auto Parts & Supplies Near Me - San Leandro, California

Our school district called called a week prior to scheduling an appointment for our school bus with a check engine light. We brought our school bus on time and patiently waited. There was no communication from Cummins San Leandro from the service department. One week does by and I make the phone call to them, only to find out they haven't even looked at it yet. They give me a bunch of excuses and stated I was next on the list. Another week goes by with no communication and I have to follow up with them. I find out they still have not looked at the school bus. This is how you support your local school districts? Shameful customer service. Bob in service needs to find a different line of work. I called the service manager Ynasia and still have not gotten a response. Horrible service. read more

$250 an hour for labor to move at a glacial pace. This business truly deserves to be reported to the Better Business Bureau... and you know .. they still wouldn't care. Got service from them 3 times. Every. single. time. Has been a disappointment, headache and a complete waste of money. It's so tough bc there is a lack of generator repair places in the Bay Area and so these people have a monopoly on the services. They work at SNAIL pace. For example a job that takes ONE person at a small mechanic 45 minute to do. Takes a team of 2-3 people 2 hours to finish here. You manage to get a hold of person to even MAKE an appt? Oh boy good job. They staff one person (Bob) to handle calls... you do the math. Once you get to your appointment, be prepared to wait another 1-1.5 hrs. Because timeliness and punctuality mean nothing to them. MAKE SURE YOU HAVE A PAPER TRAIL OF ALL COMMUNICATIONS WITH THEM. Email... have what you need to prove dates and time. I had to dispute with my credit card company and only then were they semi responsive. Do NOT come here, I repeat. They are grifters, irresponsible, slow, lack of accountability, lack of attention to detail and one of the worst businesses I have had to deal with for the last two years. read more

I took my RV to Cummins because of my. Generator was shutting off by itself. Cummins worked on it, the Manager was great, the front desk was great. Thank you Cummins. My generator is running great. Because they had to take it out and run it for several hours, the repairs werea lil bit more than I wanted pay, but a generator that isnt reliable could really mess up your plans and cause you heartache. Thanks everyone!!! Los read more

Worst Company EVER! Horrible customer service. Don't know how they are in business. The Techs are great but the office and service dept. are horrible. They will not be in business long. I am a Chief for luxury High Rise in SF and they use to service our Generator. When it comes time to replace we will not buy Cummins. read more

Tried to do business there but didn't like the comments from representative. Way over priced and not helpful with explaining what they thought might be my issue. read more

Great experience with this business. Bob the service manager was able to squeeze us in for an appointment as we had a long drive from our location. John on the day of our appointment John got us situated quickly. Rene and Ynasia were great in trouble shooting our on board RV generator. Determined it was a faulty circuit board. My husband and I were impressed with Rene's thoroughness and attention to detail. Best part of all the part we needed was in service and was covered under warranty. Overall a GREAT experience and highly recommend working with this company. Everyone was polite and professional. Thank you, thank you, thank you. read more

Was able to fit my RV into their schedule on an emergency basis. Diagnosed quickly and serviced timely. It's a shame San Leandro is only Cummins service location in entire Bay Area. Would highly recommend. read more

Completely disappointed about the job. RV Cummins generator stopped working from one day to next. First it took 2 weeks, several unanswered call and an unnecessary battery check to find a trivial error like a stuck motor. In fact I had told the service guy when I dropped it off that I assumed a stuck motor. I brought the RV to a Cummings service expecting professional help. That it took an incompetent technician over 2 hours to fix an issue, which could have been done in 10 minutes by a knowledge person, it is just ridiculous. Even more is the audacity to charge for that incompetence $500. The shop should be ashamed about the quality of its service. The service manager Bob is just useless. Don't go there, customers are just rip-off targets. Bay Area at it's best. read more

BEWARE - My Onan / Cummins R2880 generator was running poorly after 67 hrs and it cost $1500 to replace a carburator. The generator new was about $3000. I will NEVER go back. I will NEVER by another of these POS generators. If you study the warranty it is worthless. It cost $800 in labor to remove and replace a carburator. When I called to ask about service I was told they could work on the carburator without removing the generator from the van. That was important as I could have removed the generator in my driveway in less than 2 hrs. read more

Sat in the parts area waiting for service for close to 45 minutes before anyone even looked my way. No line at all just plain bad service. Counter sales guy does everything he can to not look your way. Very disappointed with the service provided. Unfortunately have been having to deal with these guys for years and this has been an ongoing issue. Just sad. read more

Originally scheduled service for Oct 2021. Tech never showed up. Have been trying to re-schedule ever since. The last communication Jacqueline sent me was on Nov 10, 2021 asking me to give her a few days. Calls and e-mails have not been returned ever since. read more

Brought in a Cummins ISLG They said it had a low compression issue that caused the instant misfire condition, after a $22,000 rebuild I drove two blocks away and it had the same misfire, I turned around and took it back and in 10 minutes they were able to replace the defective ignition coil Brought in another I SLG for a misfire issue, once they were finished repairing I paid for it went out to pick it up it still had a tag hanging on it loose spark plugs, loose valve cover bolts, exhaust manifold bolts loose, air intake pipe disconnected, wow this mechanic wow sure in a hurry to go home on Friday Brought in and I SXG, with check engine stop engine lights sporadic, engine loaded with 30 codes, Cummins tactic to write one repair estimate per code First was $2000 to thread in pressure sensor, second Was power loss on 5 V supply, instead of unplugging sensors to find a bad sensor mechanic unplugged and tire harness from computer and said needs new wire harness, when he unplugged the harness he unplugged every sensor, This $5000 bill to replace the harness was only step two to finding which sensor was defective So basically they are not technicians they are glorified high dollar parts changers, heck I can throw parts at it till the problems fixed They also charged for a dino test which clearly right on the mechanics statement Dino out of service read more

I do not recommend San Leandro Cummins for helping out on rv/trailer generators. From the beginning it was a mess. Dropping off the trailer there was only one person in office and he seemed like he had no clue. I had explained to them over the phone and as well in person what was going on. They had me fill out a paper that normally you would think the guy behind the counter would fill out. I told them that there was a noise and it was throwing a error code and not maintaining power while under a load. They had the trailer for a week. Called me on a Friday to tell me what I already knew about it. (Charged me for 2hrs)Then said that they would have to charge me 14-15hrs of labor just to remove generator and put it on the bench to test. (Bobs words) Thats Just to test and not including potential parts and labor to do a repair. I feel that they should have expressed this before me dropping it off our when I was dropping it off that there was a chance that they had to remove the generator and that it would cost a certain amount but nothing was explained. This could of saved my time and their time if they would of had better customer service and notified me the possibilities. I didn't have them do any further work, I paid for the wasted 2 hours and went on my way. read more

They are Very good at what they do! Since they are the only Cummins dealer in Silicon Valley they are very non responsive as far as service read more

Very knowledgable and professional staff makes this the place to go with RV Onan Generator problems. Even though most of their business is big trucks and buses, service manager Bob and technician Paul made me feel like a valued customer. Not the cheapest, but worth it. read more

Excellent service and fast response. From the telephone interactions all the way through to pick up I had a good experience. My small Class B RV was dwarfed by the big rigs in the lot, but I was always treated with respect and courtesy. Sandra at the front desk made check in easy. My service adviser was great. They have a decently nice waiting area with a work space and I appreciated being able to work for hours while I waited. My small Cummins generator is under warranty and they got me back on the road! Everything is fixed and working well. I am a happy camper! read more

Great experience. Staff was very friendly and knowledgeable. In and out in a flash with correct part. Thanks to 6554.

Had my RV generator inspected at this place. Called up front and got an appointment within two days. I'm very satisfied, the service was excellent and the personnel very helpful. read more

Sandra made it very easy for us to get set up in the Cummins system when we brought the coach in for engine diagnosis. We advised her that we live in our RV and needed to have it back ASAP. We scheduled it for the following week. I had trouble shot the problem to help them zero in on it quickly. Service Manager, Les Smith brought a tech out to look at it - minimized our wait time. I had a quote for anticipated work the same afternoon. Work was done ON TIME and BELOW budget! Another Cummins shop told us we needed a new turbo at roughly $10,000. San Leandro Cummins said the turbo is fine but we needed a new exhaust manifold as that is where the screeching/exhaust leaks were coming from. Even IF the turbo was deficient, they were going to rebuild rather than replace. We spent about half of the original quote from Les and while we couldn't get there early, it was finished a day before promised. Kudos to all involved and Thank You! read more

We, at Comcast SportsNet Bay Area, ONLY use Cummins West for ALL of our Satellite Truck's power needs (both shore and generator). They are very dependable and honest with they're price and service. We are VERY pleased! read more

Top 5 all time worst customer service experiences of my life. Deeply regret buying anything from this company. Zero empathy and poor communication. read more

Good service and fast shipping, but good luck getting anybody on the phone during lunch 12-100. Tried two separate days during lunch and no answer, do not attempt to call during these hours! read more

I work for Instrument Management Services and get the company generator on the truck serviced with them. They are very busy and it's best to get an appointment with them if you need it done quickly. I wouldn't take the truck or generator in on a Friday without an appointment if you need it for work on the following Monday. Other than that, their service was good. read more

They also faked a signature on a credit slip that I'm now having to dispute them on. Pathetic.

My RV Onan generator wouldn't start, so I had it repaired at the authorized Cummins service center in San Leandro. I was able to book an appointment, dropped the vehicle off, three days and $460 later was told the generator was now running. The purported cause was a plugged fuel line. I got back home, tried the generator, but it wouldn't start. I called Cummins, and left two messages. Several days later, I got a call back. When I told the service rep that the generator wouldn't start I was told to blow air through the line. If that failed it was suggested I flush the gas tank! I convinced my local mechanic to check the generator for me. In about 30 minutes he figured out that the fuel pump needed to be replaced. I called Cummins and was able to purchase a new fuel pump from them. My mechanic spent roughly another 30 minutes installing the new pump. Voila! The generator works fine. Cummins charged me for nearly 2.8 hours of labor and failed to diagnose the issue. Conclusion: I don't think I'll be using their services again. I'm not a mechanic but common sense tells me if there is no fuel to the carburetor the culprit most likely is the fuel pump! read more