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  1. General Discussion
    I have a 2008 Chevy Silverado 2500HD with the 6 speed Allison 1000 Transmission. This is a problem I only seem to get in the winter. When I first drive the truck in the morning (After obviously letting engine warm up for minimum 5 minutes), once I start to drive if I have to accelerate quickly...
  2. 11-16 LML Duramax Powertrain
    I have a 2015 LML 2500HD with EFI Live Autocal and tunes written by Proven Diesel. I bought the truck this way about a year ago and it has ran pretty flawless for me other than some proximity sensor problems that come and go. The other day I received a P1046 code and bought a can of MAF cleaner...
  3. 06-07 LBZ & LLY Duramax Powertrain
    I'm just curious if anyone has the same set up as my 06 Chevy silverado 2500 with LBZ motor and 6 speed allison trans.Everone I've talked to including mechanics don't know or haven't heard about the factory positive traction feature on my truck. I know some or all of the new trucks have this...
  4. Vehicles For Sale
    Hey This is a low mile Duramax. I changed the bed to a 14-18 bed due to rust. The bed has some dings and dents. I added a lift pump. I did all the recommended maintenance upon purchase. The carfax has high owners, the dealer told me one owner just sold and bought it 3x. The rest of the truck...
    $24,680 USD
  5. Gauges, Electronics and Wiring.
    So this is on my dads truck. He’s not very tech savvy so I’m on here trying to see what you guys have for info. So the first problem is the entire right side of exterior lighting is out. Also is a GMC Denali, (Headlight Eyebrow, cab light, dually marker light and rear tail light) can’t find a...
  6. General Discussion
    I have a lly duramax and had to pull the exhaust manifold. The 2 nuts and bolts were rusted and messed up. I can’t seem to find the 2 nuts and bolts. Does anyone know the part number or anywhere I can buy them?
  7. General Discussion
    I have a 13 GMC Sierra 3500hd SRW. It has some missing parts and a 150hp single tune in it. I bought it 2 years ago with the upgrades from a dealer. It has been running like a champ until my TCM went out a couple months ago but got one overnighted to me from Dan's Diesel Performance with the...
  8. Exterior
    Hello I have a 2013 Chevy 2500 duramax I was curious if I could swap my front end to a gmc and how hard would it be?
  9. 06-07 LBZ & LLY Duramax Powertrain
    i have a 06 lly for about a year now and noticed a slight bit of oil around the head gasket on the passenger side rear. checked all the symptoms for a blown head gasket and everything checks out okay and it looks to be traveling down from somewhere higher up. ive read some people have seen the...
  10. Introductions
    Ordered some dsp5 tunes and the switch seems to make no difference and no change in tunes.. I checked many forums on wiring and checked the wiring a lot. It’s correct. truck is fully deleted with intake and air dog and fuel filter housing delete and they say the tunes are good for deleted...
  11. 06-07 LBZ & LLY Performance Parts Discussion
    I recently bought a 06 (lly) or llz as some people call them and I have no idea what this tuner is or what it does. ill attach a photo, the selector nob with 1-5 is the only thing I see in the truck. thanks for the help!!
  12. 11-16 LML Duramax Powertrain
    Hi. I have a 2011 duramax with a mini Mac tune in it. I have replaced the cp3 pump and installed an aftermarket lift pump and have changed the fuel filters non stop and I still have low fuel rail pressure. It starts fine and is my daily driver but when I smash the pedal it’s like it depowers. I...
  13. 2020+ LM2 Duramax Powertrain
    My son-in-law bought a brand new Chevy 3500 CC Long box two weeks ago. exactly one week after he got it (1000 miles on vehicle) it started making horrific knocking noises then shut off and would not start. Towed to dealer and they could figure it out (no codes) they drained all fuel and...
  14. Introductions
    Hello everyone, new to the forum here and I am new to owning a Duramax! I recently inherited a 2003 chevy Silverado 2500hd Duramax lb7, my grandfather bought it brand new in 2003-04 and he pasted away 2 years ago today actually. I inherited the truck a year after his passing and I am wanting to...
  15. General Discussion
    Hi I am new to this but I really want to find out what diesel engine would be the best to put in a K10 chevy I'm not worried about price right now or how hard it will be I just want to know because in a few months i'm buying a k10 and I want to fully redo everything to make my dream truck but...
  16. 11-16 LML Duramax Powertrain
    I have a 2011 Danali HD 2500 with 18000 miles. When I bought my truck in January I had a vibration over 73 MPH. Not sure where it's coming from. I thought it was the shaft out of balance or wheel out of balance. The dealer told me this is normal but Im beginning to believe otherwise. It is...
  17. Introductions
    Hello All, I am with trail master suspension and we are a new sponsors to DF forum. I will be posting some of our trail master suspension lifts and leveling kits for all to see. For those interested in our products and would like to make a purchase we don't sell direct to the public but we have...
  18. Vehicles For Sale
    It's a 2005 Chevy Silverado 2500HD CCSB with the LS package. Has 136,000 miles and has been maintained regularly. It's never had any major work done to it. I have lots of extras including some that aren't on it in the picture. As it sits in the picture, the price is $26,475. As far as all of the...
  19. 06-07 LBZ & LLY Duramax Powertrain
    I can't find it anywhere, does anyone have a dyno run of their bone-stock 06 or 07 Chevy Express Duramax 6.6L LLY? Better yet, an official curve from GM or Chevy? I'm looking specifically for an 06 or 07 Chevy Express G3500, but I understand that an almost identical configuration was used in...
  20. Looking For/ Wanting To Buy
    Looking for an 01-03ish, Chevy/GMC, Duramax, 4x4, Crew Cab, Long bed. Single or double. :help Am in CA but will travel. edkemper at att dot net
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