Kennedy Diesel

Reviews

Reviews are sorted by relevance, with the most helpful and insightful feedback listed first for easy reference.

  Ed Manzer
a week ago
I have an 08 duramax, was have trouble with low fuel rail pressure code, listen to what he has to say about after market injectors, I was out of town when I put in first bank of injectors, didn t know of any local diesel shops or of Kennedy diesel at that time, purchased them from nationwide parts store. Got home went to same parts store change and purchased the other bank of injectors, still had trouble with code, so I opted to replace CP3 purchased that from a local diesel shop in my area, which is a great quality shop also, had them check my old one they confirmed it was bad, but after installing I still had same issue, pulled all injectors out and took them to the diesel shop, they checked them for me, 3 where over fueling, 2 where leaking, 1 was under fueling, replaced them with Bosch injectors, problem solved, this diesel shop says the same thing as John Kennedy does about aftermarket injectors. I have personally emailed John for advice and have ordered tools and parts from them, everything has been spot on with them, if I didn t have a quality diesel shop close to me I would have ordered my injectors and cp3 from Kennedy Diesel.

  Travis Wheeler
3 years ago
I was having EGR issues with my 2006 Duramax and they helped me achieve the the outcome I was needing. I now have a 2010 Duramax and was having shifting issues and I contacted them via email and they answered all my questions fast and accurate. They recommended a new TCM and once received I threw it in and took care of my issue. They are helping with some tuning to my rig to help achieve the Duramax's full power without abusing my rig like all the company's that sell expensive plugins that cause issues over addressing power needs the correct way. I will keep using Kennedy diesel and recommend them to anyone wanting quality advice with excellent service.Services: Transmission, Auto engine tuning

  Daniel
a year ago
I have a 2006 Duramax LBZ. Had trouble with it going into limp mode while towing anything with the dreaded 0087 low fuel rail pressure code. I stumbled across Kennedy diesel on forums and this guy was a life saver. He explained everything to me and I bought a new computer for my truck. Not even 10 minutes to change the part. That was 4 years ago and still no issues. If you have a low fuel rail pressure code do yourself a favor and just contact him right away before you try to throw a lot of time and money at it. He knows what he is talking about.

  Richie Rich
4 years ago
Beware of this company. I bought an extreme duty fan clutch for my Duramax and after installing it I drove 8 miles and wasn t watching my temps because I hadn t even got out of town or hit any hills yet and my engine overheating warning flashed in front of my eyes. Truck says idle engine to cool down so I pulled over immediately and truck got up to 270 degrees. I installed my stock fan clutch on the side of the road and the truck was running at normal temperatures again as it always did. 18 hours into my drive my piston broke in half and I strongly believe it is due to the engine over heating so badly from this faulty item. Kennedy refuses to give me a refund, they want to send me another clutch. My engine only had 23000 miles on it and now I m spending $13000 for another engine Andy business cannot be without a truck for the month it s taking to fix the truck so I had to buy another truck. I was stuck in another state with a broken truck and 40ft trailer. Took me 3 days to drive home get another truck and trailer and pull the broken stuff back. It s been a nightmare and this company is more concerned with the $139 then anything... unbelievable junk and horrible customer service.

  LT1POWR
3 years ago
Had one of their twin lift pumps installed on my truck, followed directions to a t and within 3000 miles and 8 months the wiring harness corroded and fell apart when I unplugged it. I live in and extremely dry environment with no road salt. I called them and they said it's on me to replace the harness. I'm very upset with their customer service on a $600 part. This will be the last time I purchase anything or recommend them for any service.

  Corey Good
2 years ago
After restoring my 82 chevy K10 6.2 diesel glow plug system to original the 60g plugs weren't working properly. Got the quick heats from Kennedy and she fires up instantly now. Thank you for quick shipping!Service: ElectricalService: Electrical

  BIG A
2 years ago
Had a issue with my duramax going into limp mode when I would demand fuel . Well called Kennedy an explained what was going on an they knew right away what I needed for my rig. Paid the money got my computer an away I went. I've been to Canada an back from southern California an that truck has never been better. Thank you thank you thank you for all the help. I'll definitely be back to get some more stuff for my other rigs as well.Service: Electrical repair

  Sarah Harris
3 years ago
Had this guy fly by me on the highway and I was already going over the limit. No regard for you or your family's safety. Not surprised by the other poor reviews about the quality of his parts. If your going to drive around with your website on your truck, try not driving like an ahole ;)

  steven johnston
2 years ago
Terrible service and they don't back their products! When I called for support in regards to a fingerstick for an egr blocker I was told "ya there's no warranty and we know they don't work" basically thanks for your money now beat it.

  JON Maloney
a year ago
They have no understanding of the term customer service. I would do business elsewhere if I were anyone looking at this company.

  Marc B
a year ago
Top notch service. John is always willing to help and share his knowledge. Pleasure to do business with.

  Dave Riddle
a year ago
This was a website visit. The site is well laid out, and the products I was interested in were easy to find with adequate descriptions provided.

  Dave
2 years ago
Their pumps are great but their website is very misleading as well as the staff about fitment of parts and product

  Chuck Force
2 years ago
Completely unprofessional and very expensive. He is very set in his ways. Do yourself a favor and avoid John Kennedy diesel.

  Thomas Roller
a year ago
I got a mail order tune from them and everything worked as expected

  Eli Works
4 years ago
Ordered a pump from him. He emailed to make sure I knew exactly was getting.

  Matt Gonstead
2 years ago
Very intelligent mechanic for the Duramax Diesel trucks.