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  1. Duramax Sixth Generation: 2017-2019 (L5P)
    Hi gang! I'm in the process of moving to the small truck world again from being a Medium duty guy for about 12 years. Just sold the 5500 and bought a 2017 2500HD 4x4 since we're not pulling a huge fifth wheel any more. I'm looking forward to learning new stuff about the new to me truck.
  2. Interior
    The vertical bar to the right of the Average MPG gauge in the the dash cluster photo has eluded me. I think it has something to do with fuel mileage but I haven't seen a description in any of the manuals or other literature I've seen for the 2020 2500HD trucks. What is it and how does it work?
  3. Duramax Sixth Generation: 2017-2019 (L5P)
    Well, I just bought a 2018 Chevy Silverado 3500HD from a Used Car Dealership. Owned it for less than a month and they have had it 4 times going on 5 in a few days. It has a check engine light P026D and P1089. It's covered under their 6-month 6,000-mile warranty. The dealership was honest to me...
  4. Duramax Seventh Generation: 2020+ (L5P)
    My wife moved my truck so she could get her vehicle out of the driveway a few days ago. When she parked it, she did the usual for her own car.... pushed the "START" button to shut it down. Her car automatically goes into PARK, and we know our trucks need you to move the shift lever. Fast...
  5. Duramax Sixth Generation: 2017-2019 (L5P)
    How many of you run a fuel additive in L5P motor and what type if you do run an additive?
  6. Wheels & Tires
    I have a 2017 Crew Cab that spends a lot of time on the sand. When it's not at the beach, it gets a lot of highway miles between NJ and NC. It just turned 48000 miles and the tires are finally getting worn enough to think about a different tire set up. I've been waiting for this for a while...
  7. Wheels & Tires
    Howdy guys/gals. What is the biggest tire I can run on my 2020 without any suspension modifications? Thanks in advance for any and all assistance.
  8. Closed / Archived Marketplace Ads
    Crew Cab 4x4 Denali 6.6L Duramax w/6speed Allison transmission 21,200 Miles $73,000 OBO Summit White Exterior Cocoa/Dark Sand Leather Interior — Clean Title — Ziebart Undercoating and Paint Protection — Transferrable extended warranty — 11,500 GVWR — Tow Mirrors w/Integrated cameras, bed and...
  9. Duramax Sixth Generation: 2017-2019 (L5P)
    Just checking to see how many people had to change out the head gaskets on their 2018 duramax? I use mine in the hotshot business and @ 195k we are about to change them. Any tips, pointers or past experiences if you have done them. I appreciate the comments or help in advance!
  10. Duramax Sixth Generation: 2017-2019 (L5P)
    Has anybody ever had this noise before? I can hear it the best under the truck. It’s a 2018 Chevy 2500. I have sprayed the belt with some PB Blaster to see if it makes a difference and no change. Thanks
  11. Duramax Sixth Generation: 2017-2019 (L5P)
    I am wondering how many people use synthetic oils versus regular oil in their LP5? I have never used synthetic oil much and I have put 400,000 miles on an 1999 Monte Carlo with Castrol and AC Delco filters and I never opened the motor up. Fuel pump, water pump and a few other bolt on items. I...
  12. Electrical
    Has anyone found a good company or kit to convert L5P lights (head, tail, reverse, fog, etc.) to LED while still using the OEM fixture. I have come across a number of different websites and companies but no reviews or input from anyone that has done the upgrade. Any pictures or reviews from...
  13. Duramax Sixth Generation: 2017-2019 (L5P)
    My father bought an 2019 l5p last year he's at about 14k mi and ever since we've bought it at 8k it's had a small fuel leak on the drivers side towards the firewall while running. I've looked a few times and I couldn't see it up top and we brought it to a dealer they didn't see anything. Today...
  14. Duramax Sixth Generation: 2017-2019 (L5P)
    I have a 17 Crew with 44k on it , truck just started squealing. Dealer has changed belt and all moving pullys. They say it's not the fan either... They have scoped everything for the noise, they can duplicate it, but it goes away to quick. I have a video of it , not sure how to add it. Any help...
  15. Duramax Seventh Generation: 2020+ (L5P)
    Just traded my 2018 2500 Duramax for a new 2020 2500 L5P and notice a throbbing sound at idle when the engine is warmed up ( currently 2200km). Dealership says it is covered under the #16-NA-32 Bulletin on common engine noises Duramax 6.6L, but this is not the ticking or cycling that I have...
  16. Duramax Sixth Generation: 2017-2019 (L5P)
    Very simple- Tell us what you did to your L5P today!
1-16 of 16 Results